Thermally amendable and thermally stable thin film of POSS tethered Poly(methyl methacrylate) (PMMA) synthesized by ATRP

Ata, Souvik; Dhara, Palash; Mukherjee, Rabibrata; Singha, Nikhil K.

doi:10.1016/j.eurpolymj.2015.12.010

Cited by 19 publications

(13 citation statements)

References 50 publications

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“…This reaction was performed using a two-stage heating process [growth (70 °C, 24 h) and aging (110 °C, 4 h) steps]. Figure 1 shows the 1 H, 13 C, and 29 Si nuclear magnetic resonance (NMR) spectra of the SQ-SH before and after the aging process. After the aging process, the 1 H and 13 Meanwhile, the M n determined by size exclusion chromatography (SEC) analysis changed from 480 to 2200 g/mol (Figure S1).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Silsesquioxane/Poly(2-methoxyethyl acrylate) Hybrid with Both Antithrombotic and Endothelial Cell Adhesive Properties

Nishimura

Ueda

Kobayashi

et al. 2020

ACS Appl. Polym. Mater.

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Antithrombotic coating material is indispensable for the production of blood-contacting medical devices. Physical coatings of inexpensive synthetic polymers are desirable to reduce medical expenses and provide patients with an opportunity to receive medical care. Poly(2-methoxyethyl acrylate) (PMEA) homopolymers are widely diffused coating materials that almost meet these requirements. However, the PMEA homopolymer coating has room for improvement because its poor coating properties cause dewetting, thus limiting the available substrates. Herein, we fabricated an inorganic/organic hybrid material using silsesquioxane (SQ) and poly(2-methoxyethyl acrylate) (PMEA) called the SQ/PMEA hybrid to overcome the limitations of existing PMEA homopolymer coatings. The SQ/PMEA hybrid was successfully synthesized by thiol-initiated radical polymerization of 2-methoxyethyl acrylate (MEA) from thiol group-containing random-type silsesquioxane (SQ-SH) utilizing 2,2′-azobis(isobutyronitrile) as a thermal initiator. This polymerization strategy readily afforded the required hybrid with various Si contents by merely changing the feed composition of the monomer and SQ-SH without a complicated procedure. The SQ/PMEA hybrid showed the formation of intermediate water essential for biocompatibility in any polymer composition. By optimizing the Si content, the hybrid formed a smooth and stable coating layer on surfaces of polymers, ceramics, and metals compared with the PMEA homopolymer even under wet conditions and significantly suppressed human platelet adhesion. In addition, the hybrid coating not only exhibited antithrombotic properties but also drastically promoted the adhesion and extension of human umbilical vein endothelial cells (HUVECs). These characteristics of the hybrid material are attractive for the surface treatment of blood-contacting devices used for a long time, including extracorporeal membrane oxygenation (ECMO) devices, blood vessels, and stents. This strategy has potential in the advancement of the biomedical fields such as tissue engineering, regenerative medicine, and minimally invasive medicine.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Silsesquioxane/Poly(2-methoxyethyl acrylate) Hybrid with Both Antithrombotic and Endothelial Cell Adhesive Properties

Nishimura

Ueda

Kobayashi

et al. 2020

ACS Appl. Polym. Mater.

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“…[8] POSStethered PMMA hybrid material prepared via ATRP of MMA from the modified POSS surface revealed selfhealing properties after annealing at 120 C after 14 days. [20] The ATRP of triblock copolymers of acryloisobutyl POSS and poly(acrylic acid) (PAA) showed different types of morphologies such as worm and brush like morphologies with change in PAA block length. [21] RAFT has also been applied to synthesize POSScontaining copolymers to incorporate self-assembly behavior [22] or to improve mechanical stability [23] .…”

Section: Introductionmentioning

confidence: 99%

Incorporation of POSS to improve thermal stability of bio‐based polymethacrylates by nitroxide‐mediated polymerization: Polymerization kinetics and characterization

Hajiali

Marić

2020

Journal of Polymer Science

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Nitroxide-mediated polymerization (NMP) was used to polymerize methacrylate-functionalized polyhedral oligomeric silsesquioxane, POSSMA, in a controlled manner with bio-based C13 methacrylate (C13MA) to improve the thermal stability of the latter by copolymerization (using 10 mol% acrylonitrile controlling comonomer). Kinetic experiments (80-110 C) revealed the relatively low ceiling temperature of POSSMA (135 C). Synthesis of poly(POSSMA-co-AN) with f AN,0 = 0.10 at 90 C resulted in low dispersity

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“…In the 1 H NMR spectrum (Fig. ) of Ino‐(PDEGMA 51 ‐ b ‐PMMA 30 ‐Br) 6 star block copolymer (Table , entry 7), the chemical shifts, 0.55–1.38, 1.40–2.15, and 3.51–3.90 ppm, are primarily attributable to the –CH 3 (α′), –CH 2 – (β′), and –OCH 3 (f) of PMMA units, denoting the inherence of PMMA segments …”

Section: Resultsmentioning

confidence: 99%

Synthesis of inositol‐based star polymers through low ppm ATRP methods

Chmielarz

2017

Polymers for Advanced Techs

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The vitamin B8‐based macroinitiator with six 2‐bromoisobutyric initiating sites was prepared for the first time by the transesterification reaction of meso‐inositol with 2‐bromoisobutyryl bromide. A series of six‐armed (co)polymers, containing hydrophilic poly(di(ethylene glycol) methyl ether methacrylate) and amphiphilic poly(di(ethylene glycol) methyl ether methacrylate)‐block‐poly(methyl methacrylate) as the arms and meso‐inositol as the core, were obtained by low ppm atom transfer radical polymerization (ATRP) methods, utilizing 30 ppm of catalyst complex. Under Fe0‐mediated supplemental activators and reducing agents ATRP, Cu0‐mediated supplemental activators and reducing agents ATRP, Ag0‐mediated activators regenerated by electron transfer ATRP, and simplified electrochemically mediated ATRP conditions, polymerization proceeded on to high conversion while maintaining low dispersity (Đ = 1.05–1.16) giving well‐defined six‐armed star (co)polymers. 1H NMR spectral results confirm the formation of new star‐shaped block (co)polymers. The absence of intermolecular coupling reactions during synthesis was confirmed by gel permeation chromatography analyses of the side chains of received star (co)polymers. These vitamin B8‐based star (co)polymers may find biomedical applications as thermo‐sensitive drug delivery systems, biosensors, and tissue engineering solutions. Copyright © 2017 John Wiley & Sons, Ltd.

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Thermally amendable and thermally stable thin film of POSS tethered Poly(methyl methacrylate) (PMMA) synthesized by ATRP

Cited by 19 publications

References 50 publications

Silsesquioxane/Poly(2-methoxyethyl acrylate) Hybrid with Both Antithrombotic and Endothelial Cell Adhesive Properties

Silsesquioxane/Poly(2-methoxyethyl acrylate) Hybrid with Both Antithrombotic and Endothelial Cell Adhesive Properties

Incorporation of POSS to improve thermal stability of bio‐based polymethacrylates by nitroxide‐mediated polymerization: Polymerization kinetics and characterization

Synthesis of inositol‐based star polymers through low ppm ATRP methods

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