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macroinitiators to give triblock and pentablock copolymers of reasonable dispersity. The triblocks were used as initiators for the successful synthesis of pentablock copolymers. The secondary structures of the triblock and pentablock copolymers have been investi-gated using circular dichroism (CD) spectroscopy. The adenosine copolymers are foun Schematic illustration of formation of various polyplexes with pentablock pentablock copolymer (PB), Pluronic F127 (PL), EGF conjugated pentablock copolymer copolymer (PBE) and EGF conjugated Pluronic F127 (PLE).. 104 Figure 4.2. Size distribution of polyplexes at N:P ratio of 20 in 0.5× HBS buffer pH=7. The block copolymers were synthesized by sequential feeding of monomer styrene and 2-ethylhexyl acrylate. Take pentablock copolymer of (SEHAS) 2 (S for polystyrene, EHA for poly(2-ethylhexyl acrylate)) as an example. Firstly, 0.414 g of the macro RAFT agent and 2.7 g of styrene were mixed with 15.5 g of deionized water in a 250 mL flask Responsive pentablock copolymers for siRNA delivery† Metin Uz,ab Surya K. Mallapragadab and Sacide Alsoy Altinkaya*a In this study, temperature and pH responsive cationic and amphiphilic pentablock copolymers, which consist of the temperature responsive triblock Pluronic F127 sandwiched between pH responsiv UK)at90 ∘scatteringangel Pentablock copolymer. molecules lation and, Tailor-Made Pentablock Copolymer Based Formulation for Sustained Ocular Delivery of Protein Therapeutics.

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The sizes, zeta potentials, and polydispersity indices (PDI) of both PSMA antibody-coupled paclitaxel-loaded pentablock nanomicelle (PTX-PBNM-Ab) and the unconjugated pentablock nanomicelles (PTX-PBNM) were obtained using dynamic laser scattering (DLS) with the help of Zetasizer HS 3000 (Malvern Instruments, UK), at a detection angle of 90° at. Triblock and pentablock copolymers were successfully synthesized by ring-opening bulk copolymerization of ε-caprolactone and l-lactide/ d, l-lactide/glycolide. In the first step, triblock copolymers (PCL-PEG-PCL) with different molecular ratios of PEG/PCL were synthesized utilizing PEG (4 kDa) as the macroinitiator and stannous octoate as the.

The objective of this research article is to report the synthesis and evaluation of novel pentablock copolymers for controlled delivery of macromolecules in the treatment of posterior segment diseases. Novel biodegradable PB copolymers were synthesized by sequential ring-opening polymerization. Various ratios and molecular weights of each block (polyglycolic acid, polyethylene glycol. The objective of this research article is to report the synthesis and evaluation of novel pentablock copolymers for controlled delivery of macromolecules in the treatment of posterior segment diseases. (Zetasizer Nano ZS, Malvern Instruments Ltd., Worcestershire, UK) at 90° scattering angel. All the NP samples were analyzed in triplicate.

Cellular uptakeand targetingoflow dispersity, dual emissive, segmented block copolymer nanofibers† Steven T. G. Street, ‡§ab Yunxiang He, ‡a Xu-Hui Jin, ac Lorna Hodgson, d Paul Verkade d and Ian Manners *ab Polymer-based nanoparticles show substantial promise in the treatment and diagnosis of cancer and othe Segmented C-B-A-B-C pentablock 1D nanofibers with varied spatially-defined coronal chemistries and a selected length (95 nm) were prepared using the living crystallization-driven self-assembly (CDSA) seeded-growth method. As the blue fluorescence of PDHF is often subject to environment-related quenching, a far-red BODIPY (BD) fluorophore was.

QPay initially asked for a $380 000 investment for an 8.4% stake to grow the business all over Australia and move into the UK. As an established business, they had already got investments of $620 000 for marketing and operations. Their projected growth was 180 million per month in the next five years. Their rate of growth impressed all of the. The synthesis of multi-block star-shaped copolymers via SET-LRP in aqueous solution has been reported for the first time. This aqueous polymerization technique allows rapid and direct access to acrylamide based star-shaped polymers. It is possible to synthesize an A-B-A-B-C penta-block copolymer in <90 minu Pentablock copolymers of pluronic F127 and modified poly(2-dimethyl amino)ethyl methacrylate for internalization mechanism and gene transfection studies UK). Light scattering measurements were done with a laser at 633 nm and a 90° scattering angle. The particle sizes and zeta potentials were measured three times. The transmission electron.

Biodegradable and injectable in situ thermosensitive hydrogels were investigated for sustained delivery of protein therapeutics in the treatment of ocular posterior segment neovascular diseases. A series of triblock (TB, polycaprolac-tone-polyethylene glycol-polycaprolactone (PCL-PEG-PCL), B-A-B) and pentablock copolymers (PBCs) (polylactic acid (PLA)-PCL-PEG-PCL-PLA (C-B-A-B-C) and PEG-PCL. UV-vis transmittance, and TEM. The LCST of pentablock terpolymer increased (over 50 °C) compared to the NIPAM homopolymer (~32 °C), due to the incorporation of the hydrophilic PEG and PMA blocks in pentablock terpolymer (PNIPAM block as the core, PEG the block and the hydrophilic PMA block as the shell and the corona) Pentablock star shaped polymers in less than 90 minutes via aqueous SET-LRP Resat Aksakal†, Marina Resmini‡*, and C. Remzi Becer†* †School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, E1 4NS, London, UK The cis/trans pentablock copolymers 12 and 13 showed reversible oxidation and reduction potentials E 1/2 at 0.5-0.6 V and −1.99, -1.80 V with the HOMO energy level approximately −5.14 eV but slightly deeper LUMO level (−2.79 eV) for BCP 13 (Table S7† and Table 1, entries 13 & 15)

Ultrasoft-yet-strong pentablock copolymer as dielectric

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  2. The FA-BD-PEG-BD-FA pentablock nanofibers consisted of a 21 nm central segment with a PEG corona derived from the seed, 18 nm inner BD functionalized blocks, and 31 nm outer FA functionalized blocks, and were transferred into aqueous media for future experiments by dialysis from MeOH/THF (1 : 1), with a very small amount of.
  3. Novel thermosensitive pentablock copolymers for sustained delivery of proteins in the treatment of posterior segment diseases. Coronavirus: Worcestershire, UK). PB-1 copolymer concentrations ranging from 0.1 to 5 wt% were investigated without any further dilution. Viscosity Measurements
  4. The design, synthesis, and application of novel biodegradable and biocompatible pentablock (PB) copolymers, i.e., polyglycolic acid-polycaprolactone-polyethylene glycol-polycaprolactone-polyglycolic acid (PGA-PCL-PEG-PCL-PGA) and polylactic acid-polycaprolactone-polyethylene glycol-polycaprolactone-polylactic acid (PLA-PCL-PEG-PCL-PLA) for sustained protein delivery, are reported. The PB.
  5. In Vitro Gel Stability and Release Studies. Both pentablock copolymers were stable in aqueous environments, unlike the triblock copolymers (Fig. 2), and by the end of 30 days, only 43% of the P1 gel and 23% of P2 gel remained intact (Fig. 2).The dissolution of P1 gel was slightly slower than that of the P2 gel at all time points

Free Online Library: Tailor-made pentablock copolymer based formulation for sustained ocular delivery of protein therapeutics.(Research Article, Report) by Journal of Drug Delivery; Health, general Bevacizumab Usage Diabetic retinopathy Care and treatment Diagnosis Drug delivery systems Analysis Drugs Vehicles Pathological physiology Physiology, Pathologica Pantoloc Control is a medicine that contains the active substance pantoprazole. It is available as gastroresistant tablets (20 mg). 'Gastroresistant' means that the tablet's contents pass through the stomach without being broken down until they reach the intestine. This prevents the active substance from being destroyed by the acid in the.

Pentablock copolymer micelle nanoadjuvants enhance

QPay initially asked for a $380 000 investment for an 8.4% stake to grow the business all over Australia and move into the UK. As an established business, they had already got investments of $620 000 for marketing and operations. Their projected growth was 180 million per month in the next five years. Their rate of growth impressed all of the. the synthesis of the corresponding pentablock copolymers. To our knowledge this is the first bidirectional ROMP39 of paracy-clophanedienes using bifunctional ruthenium carbene initiators towards the synthesis of conjugated multiblock copo-lymers (Fig. 1). Results and discussion Initial optimisation studies focussed on the ROMP of mono (2016). Optimization of novel pentablock copolymer based composite formulation for sustained delivery of peptide/protein in the treatment of ocular diseases. Journal of Microencapsulation: Vol. 33, No. 2, pp. 103-113 The top eight most successful products that got their start in the Shark Tank have generated a minimum of $100 million in sales each. 8. Sleep Styler. Shark that bit: inventor and entrepreneur. The pentablock amphiphilic copolymer T1107 prevented the aggregation of DTT-reduced HEWL. Structural characterization showed that T1107 supported the presence of beta-sheet structures in a partially folding species of HEWL, and that loss of these secondary structures in the absence of T1107 resulted in the formation of large aggregates

Synthesis of PA-F127 pentablock copolymer. PA (15 g) and 15 g of Pluronic F127 (15 g) were added to a 100 mL round bottom flask and the mixture was heated with constant stirring to yield a well-mixed molten phase and it was reacted at 160°C for 6 h Pentablock copolymers were synthesized by two-step ATRP approaches as Scheme 2.The first step is to prepare the triblock copolymer PMMA-b-PDMS-b-PMMA. After Cu(I)Br and a dry magnetic stirrer were added into a dry Schlenk tube which was sealed with a rubber septum prior to three vacuum/N 2 cycles, the macroinitiator Br-PDMS-Br (1.0 g) obtained by HO-PDMS-OH and BiBB , and the mixture of MMA. Pentablock copolymers of pluronic F127 and modified poly(2-dimethyl amino)ethyl methacrylate for internalization mechanism and gene transfection studies Shih-Jer Huang,1 Tzu-Pin Wang,1 Sheng-I Lue,2 Li-Fang Wang11Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan; 2Department of Physiology, Kaohsiung Medical University, Kaohsiung, TaiwanAbstract.

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These dual-emissive pentablock nanofibers exhibited uptake into >97% of folate receptor positive HeLa cells by flow cytometry. In the absence of FA, no significant uptake was detected and nanofibers with either FA or BD coronal groups showed no significant toxicity Each pentablock copolymer was prepared at a concentration of 0.5% w/w in D 2 O and pH was adjusted to 3.0, 7.4 and 9.0 using DCL and NaOD solutions. The spectra were recorded at three temperatures: 25 °C, 37 °C and 52 °C. 2.4.3. Zeta (ζ) potential measurement 3 Keywords: Pentablock copolymer, self-assembly, water vapor transport, water vapor/N 2 selectivity. 1. Introduction The removal of water vapors from humid streams is an important and energy-intensive process (e.g., dehydration of flue gas, natural gas, and drying of compressed air) [1-4]

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(2015). Synthesis of Poly(methyl methacrylate)-poly(poly(ethylene glycol) methacrylate)-polyisobutylene ABCBA Pentablock Copolymers by Combining Quasiliving Carbocationic and Atom Transfer Radical Polymerizations and Characterization Thereof. Journal of Macromolecular Science, Part A: Vol. 52, No. 4, pp. 252-259 Manchester, United Kingdom Post Doctoral Research Associate University of Manchester Jun 2011 - Apr 2019 7 years These strategies were successfully extended to the synthesis of the corresponding pentablock copolymers. Optical and electrochemical properties of cis/trans and all trans homo and block copolymers are discussed

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  1. The dizinc catalyst selectively forms pentablock copolymers with predictable compositions and block sequences. The structure of the pentablock copolymer depends on whether lactone or lactide is applied as the monomer. Overall, this thesis presents a novel type of catalyst selectivity and a means to control it
  2. Dialkoxy and dialkyl substituted paracyclophane-1,9-dienes undergo bidirectional ring opening metathesis polymerisation (ROMP) on addition of bifunctional Hoveyda-Grubbs initiators. The living nature of the polymerisation was demonstrated for different [monomer]/[initiator] ratios and block copolymers were
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  1. f, Pentablock concentric micelle formed from the sequential addition of 1 and 1 B to the micelle solution in d (A n = 718,000 nm 2, A w = 740,000 nm 2, A n /A w = 1.03, σ/A n = 0.17). Inset: Blue.
  2. The pentablock polymer PEP26M shows two strong peaks at 19.2° and 23.3°, originating from the crystal structure of the PEO central block . The pure PHEMA displays two broad-featured peaks at 2θ = 18.3°, 29.2° that are characteristic of an amorphous polymer
  3. The chapter aims to summarise the studies on thermoresponsive multiblock copolymers, and it is organised in four sections according to the number of blocks: triblock, tetrablock, pentablock and multiblock copolymers; the latter includes studies on block copolymers with more than five blocks

the other hand, 2%w/v of pentablock copolymer was dissolve in 1 mL ethanol in a separate tube. The two solutions were then mixed together, homogenized and evaporated in a speed vacuum for 24h (Malvern Instruments, UK), at a detection angle of 90 degrees at 25oC. The samples were dissolved in deionized water, homogenized and filtered using 0. Objective.To evaluate thermosensitive, biodegradable pentablock copolymers (PTSgel) for sustained release and integrity of a therapeutic protein when injected subcutaneously. Materials and Methods.Five PTSgels with PEG-PCL-PLA-PCL-PEG block arrangements were synthesized. In vitro release of IgG from PTSgels and concentrations was evaluated at 37°C. . Released IgG integrity was characterized. The pentablock copolymers show a significant fivefold enhancement in the immune response compared to soluble protein alone, even 6weeks after the administration, based on measurement of antibody.

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The chemical structure of the pentablock copolymer was confirmed with proton nuclear magnetic resonance (1 H-NMR) and Fourier transform infrared (FT-IR) spectroscopy. The copolymer was able to self-assemble into core/shell polymeric micelles in aqueous solution at low concentrations, and its critical micelle concentration (CMC) value was 4.5 mg. Morphology and particle size of gold nanostructures were analyzed by transmission electron microscopy (TEM, LEO 906 at 100 kV acceleration voltages, Zeiss, Germany). To obtain average nanoparticle size and zeta potential, dynamic laser scattering was used (Zetasizer Nano, Malvern, UK)

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US7815786B2 US11/846,385 US84638507A US7815786B2 US 7815786 B2 US7815786 B2 US 7815786B2 US 84638507 A US84638507 A US 84638507A US 7815786 B2 US7815786 B2 US 7815786B2 Authority US United States Prior art keywords repeat units polyether suppressor electrolytic plating nitrogen Prior art date 2004-11-12 Legal status (The legal status is an assumption and is not a legal conclusion Senior Section Leader, Global Hygiene Hot Melt Platform Technology. H.B. Fuller. Feb 2017 - Mar 20181 year 2 months. Our global team works together to develop innovative solutions for the hygiene. View Povilas Radzevicius' profile on LinkedIn, the world's largest professional community. Povilas has 2 jobs listed on their profile. See the complete profile on LinkedIn and discover Povilas' connections and jobs at similar companies The thermal stabilities of the pentablock copolymers were slightly less than the PS‐PIB‐PS macroinitiators due to the presence of polyacrylate or polymethacrylate outer block segments Patricia Ann Kaman is on Facebook. Join Facebook to connect with Patricia Ann Kaman and others you may know. Facebook gives people the power to share and makes the world more open and connected

Strategic Pentablock Copolymer Nanomicellar Formulation

Property Name Property Value Reference; Molecular Weight: 158.24: Computed by PubChem 2.1 (PubChem release 2021.05.07) Hydrogen Bond Donor Count: 0: Computed by Cactvs 3.4.6.11 (PubChem release 2019.06.18 group synthesised pentablock terpolymers from n-hexyl isocya-nate, styrene and isoprene. The polymerisation, which was carried out in a high vacuum setup at −98 °C using a sodium naphthalene/sodium tetraphenylborate initiating system yielded the pentablock block polymer with a PDI value of 1.32 and a high molecular weight of 128 kDa.5 Pentablock: triMeCa — H 2 O (BAB) polymers have been patented by Macromed Inc. (acquired by Protherics UK Ltd) in ca 2000, 200-202 and several articles have been published by Professor Sung Wan Kim† (1940-2020, co-founder of Macromed Inc. 203) and other groups around the world since then. 31,. Characterization of PA-F127 pentablock copolymer The carboxylic group of PA was esterified with the hydroxyl groups of Pluronic F127 (Scheme 1). The structure of PA-F127 copolymer was determined by [.sup.1]H NMR spectroscopy in CD[Cl.sub.3] and the [delta] (ppm) values of different groups are shown in Table 1

Aksakal, R., Resmini, M., & Becer CR Pentablock core-first star shaped polymers in less than 90 minutes via aqueous SET-LRP. Abstracts of papers of The American Chemicla Society . Volume: 252 Meeting Abstract: 419 Published: AUG 20 201 BCs can exist in different morphologies including diblock, triblock, pentablock, star block, miktoarm and graft block copolymers (Figure 2). One way to synthesise an amphiphilic molecule, for example BCs, is to create a diblock copolymer with one hydrophilic and one hydrophobic domain. Similar t TEM images of the morphology of pentablock co-micelles are shown in Fig. 4a,b. The samples for electron microscopy were prepared by drop-casting one drop (about 10 μl) of the micelle solution. Molecular imprinting is a synthetic approach for the generation of recognition sites in a macromolecular matrix using a molecular template and functional monomers in a casting procedure. Personal website: resminilab.sbcs.qmul.ac.uk. Publications of specific relevance to Materials Research. Publications. 2021

PAA-b-P85-b-PAA pentablock copolymer was synthesised as shown in Supplementary Figure S1 and described in Supplementary Methods and Results online. All other chemicals were of reagent grade and. Pentablock copolymer dexamethasone nanoformulations elevate MYOC: in vitro liberation, activity and safety in human trabecular meshwork cells. Vibhuti Agrahari, Guorong Li, Vivek Agrahari, Iris Navarro, Kristin Perkumas, Abhirup Mandal, W Daniel Stamer & Ashim K Mitra; Pages: 1911-1926; Published Online: 31 July 201 How to Install Veneer Stone: This video shows you how to install stone veneer with QUIKRETE Veneer Stone Mortar. The addition of stone veneer can turn an or.. Established in 1994, NYSORA is a World Leader in Education in Anesthesiology, ULTRASOUND, Regional Anesthesia and Pain Medicine

B-A type pentablock structure s with terminal PEG segments of 5000 and 20000 g mol 21, respectively. Again, an increase in the molecular weight of the DNA block copolymers resulted in lower gelshifts.Asanadditionalstructuralproof,MALDI-TOFmass spectrometry was used to confirm the formation of the ds-DNA pentablock structures (Fig. 3) Tim Lodge was born in Manchester, UK, in 1954, and emigrated to the US in 1968. After graduating from Harvard in 1975 with a B.A. cum laude in Applied Mathematics, he began graduate research in Chemistry at the University of Wisconsin, working with Professor John Schrag. Following his Ph.D.

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Pentablock star shaped polymers in less than 90 minutes via aqueous SET-LRP . Polymer Chemistry vol. 7 , ( 1 ) 171 - 175 Gels for constant and smart delivery of insulin. M JOAN Taylor, KRISHAN P Chauhan, TARSEM S Sahota. School of Pharmacy, De Montfort University, Leicester, UK. Address for correspondence: Professor M Joan Taylor. School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK. E-mail: mjt@dmu.ac.uk University of Warwick, Library Road, CV4 7AL Coventry, UK. Monash Institute of Pharmaceutical Sciences, Monash University, Parksville, VIC, 3052 Australia. Search for more papers by this author by in situ chain extensions and block copolymerizations with PEGMA 475 yielding well‐defined functional telechelic pentablock copolymers within 2. Coventry, United Kingdom Chairman of privately held biotechnology spin-out company from University of Warwick. Circular dichroism (CD) spectroscopy revealed secondary structure of the triblock and pentablock copolymers wherein the adenosine derivatives are found to exhibit greater order in water when compared to the uridine derived polymers.

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The aim of this work is to evaluate the possible use of Nexar™ polymer, a sulfonated pentablock copolymer (s-PBC), whose structure is formed by tert-butyl styrene, hydrogenated isoprene, sulfonated styrene, hydrogenated isoprene, and tert-butyl styrene (tBS-HI-SS-HI-tBS), as a more economical and efficient alternative to Nafion® membrane for proton exchange membrane (PEM) electrolysis cells Imperial Consulting Group. Jul 2016 - Aug 20162 months. London, United Kingdom. Student-led consulting project on revenue strategy and new market entry for a technology start-up in the tourism industry. • Led a team of 5 consultants in developing strategies for improving revenue and new market entry. • Set up the project direction through. In this paper, we investigate a pentablock system A B C B A, where the B block is always hydrophilic and the A and C blocks have varying degrees of hydrophobicity depending on external conditions. We report coarse-grained molecular-dynamics simulations where the solvent is included explicitly and monomers interact via a 6-9 Lennard Jones.

PSMA Antibody-Conjugated Pentablock Copolymer Nanomicellar

As a proof of concept, we demonstrate the preparation of luminescent pentablock co-micelles representing the colours of the flags of Canada, the United Kingdom and Ireland Apr 26, 2016 - Explore Heidi Mattioli's board Stone mailbox, followed by 118 people on Pinterest. See more ideas about stone mailbox, mailbox, brick mailbox Novel pentablock copolymers as thermosensitive self-assembling micelles for ocular drug delivery. Advanced pharmaceutical bulletin 7 , 11 (2017). Article CAS PubMed PubMed Central Google Schola

Novel pentablock copolymer-based nanoparticulate systems

A facile self-assembly process for synthesizing monodisperse hollow spherical nanoparticles that are less than 50 nm in diameter has been developed. Preferential hydrogen bonding between an amphiphilic block copolymer (polystyrene-b-polyvinylpyridine, PS-PVP) and a hydrogen-bonding agent (HA) enables formation of monodisperse spherical solid polymer nanoparticles with the HA residing in the. Don't miss new deals for outdoor & garden supplies. These prices are going fast This paper reports the effects of synthesis time, temperature, and reactant ratio on ZIF-71 particle size and the effect of particle size on membrane performance. Temperature has the greatest effect on particle size, as the synthesis temperature varies from −20 °C to 35 °C. The synthesized ZIF-71 has particle diameters ranging from 150 nm to 1 μm. ZIF-71 particle size is critical in ZIF.

Collets - Collet Closer. Supplier: ITT Compact Automation. Description: Collets are used worldwide in the metalworking industry for their high accuracy and high output gripping of tools and work pieces. Compact Automation Products has chosen 3 popular collet sizes: 1C, 3 C and 5 C to design our space efficient collet The current study sheds new light on micellar assemblies (i.e., those with the sulfonated blocks comprising the micellar core) of a midblock-sulfonated pentablock copolymer in polar/nonpolar solvent mixtures by combining small-angle X-ray and small-angle neutron scattering Deming Z. Tunable hydrogel morphology via self-assembly of amphiphilic pentablock copolypeptides. Soft Matter. 2010;6:2546-2551. doi:10.1039/b927137f. 75. Rughani R, Branco MC, Pochan DJ, Schneider JP. De novo design of a shear-thin recoverable peptide-based hydrogel capable of intrafibrillar photopolymerization Investigation ofin vitro biocompatibility of novel pentablock copolymers for gene delivery. By Ankit Agarwal. Pluronic F127-Based Thermosensitive Gels for Delivery of Therapeutic Proteins and Peptides. By Muhammad Sajid Hamid Akash. Temperature-sensitive polymers for drug delivery A New Class of Antimicrobial Polymers for High-Contact Surfaces. The novel self-sterilizing polymer can be used as a coating on various high-contact surfaces in healthcare settings, public transport, and consumer products such as medical devices and cell phones. TESET can also be used as a replaceable peel-and-stick film for personal protective. London, United Kingdom I had the pleasure of working with Julio for two years at ATPAC / Pentablock USA, collaborating on several strategic marketing and product development projects for.