نتایج جستجو برای: raft polymerization

تعداد نتایج: 35557  

Journal: :Polymer Chemistry 2021

Poly(tert-octyl acrylamide)-poly(N,N-dimethylacrylamide) nanoparticles are prepared by RAFT dispersion polymerization at 70 °C in various n-alkanes. Thermoreversible flocculation occurs higher n-alkanes on cooling to 20 °C.

Journal: :Polymer Chemistry 2021

This work presents the synthesis of polyvinylpyridine-polystyrene (PVP-b-PS) diblock copolymers via RAFT dispersion polymerization. Spin-coated PVP-b-PS films were converted into porous surfaces by a controlled alignment and swelling strategy.

Journal: :Polymer Chemistry 2021

RAFT non-aqueous emulsion polymerization of N-(2-acryloyloxy)ethyl pyrrolidone in n-dodecane using a poly(stearyl methacrylate) precursor is used to prepare sterically-stabilized nanoparticles, which are evaluated as putative Pickering emulsifier.

Journal: :Macromolecular Reaction Engineering 2021

In this work, the combination of different modeling approaches with in-line proton nuclear magnetic resonance (1H-NMR) spectroscopy is used to assist transfer a reversible addition-fragmentation chain (RAFT) polymerization methyl methacrylate micro-scale reactor. This approach then applied find optimal process parameters like temperature or residence time as well best composition reaction mixtu...

Journal: :Angewandte Chemie 2023

Cationic β-C–H and β-C–C scissions were employed for selective cationic dimerization of α-methylstyrene (αMS) derivatives to synthesize exo-olefin compounds subsequent sulfur-free RAFT polymerization αMS isobutylene (IB) produce polymers with controlled structures, respectively, as reported by Masami Kamigaito et al. in their Research Article (e202307791).

2017
Xiaofeng Wang Chih-Feng Huang Jinlian Hu Rui Xiao

This short review article summarizes recent reports on using controlled radical polymerization (CRP) of inimers (compounds containing initiating group and vinyl group in one molecule) or transmers (compounds containing chain transfer group and vinyl group in one molecule) for the synthesis of hyperbranched polymers. These inimers and transmers that carry numerous functional groups could be homo...

Journal: :European Polymer Journal 2021

The synthesis of a linear polyisobutylene is achieved for the first time by free radical polymerization. reaction was performed in environmentally friendly conditions, i.e., an aqueous medium using cyclodextrin solubilizer, around room temperature. This mild and straightforward polymerization resulted predominantly polymer with low dispersity. Isobutylene also copolymerized acrylamide via this ...

Journal: :Molecular biology of the cell 2005
Shengli Hao Avery August

Polymerization of the actin cytoskeleton has been found to be essential for B-cell activation. We show here, however, that stimulation of BCR induces a rapid global actin depolymerization in a BCR signal strength-dependent manner, followed by polarized actin repolymerization. Depolymerization of actin enhances and blocking actin depolymerization inhibits BCR signaling, leading to altered BCR an...

Journal: :Angewandte Chemie 2023

Hydrogel preparation under NIR light via a photoinduced RAFT polymerization catalyzed by tetrasulfonated zinc phthalocyanine is reported Cyrille Boyer et al. in their Research Article (e202302451). Exploiting enhanced penetration of light, gelation effectively performed through barriers. Thiocarbonylthio groups embedded hydrogel networks facilitate the reactivation polymer chains wavelengths, e...

Journal: :Angewandte Chemie 2023

Hydrogel preparation under NIR light via a photoinduced RAFT polymerization catalyzed by tetrasulfonated zinc phthalocyanine is reported Cyrille Boyer et al. in their Research Article (e202302451). Exploiting enhanced penetration of light, gelation effectively performed through barriers. Thiocarbonylthio groups embedded hydrogel networks facilitate the reactivation polymer chains wavelengths, e...

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