نتایج جستجو برای: reversible chain transfer catalyzed polymerization

تعداد نتایج: 687415  

Journal: :Macromolecules 2021

Carbon nanotube (CNT)-based materials allow for the direct conversion of light into heat and then mechanical force in so-called photo-mechanical effect. This effect has been observed almost solely form polymer (nano)composites, where CNTs act as active fillers. To overcome issue with heterogeneous distribution, hybrids based on multiwalled carbon nanotubes (MWCNTs) covalently modified poly(2-hy...

2017
Simone Gatti Azzurra Agostini Raffaele Ferrari Davide Moscatelli

The control over the size distribution and stability of polymeric nanoparticles (NPs) is crucial in many of their applications, especially in the biomedical field. These characteristics are typically influenced by the production method and the nature of the starting material. To investigate these aspects, the controlled radical polymerization of functionalized methacrylates constituted by 2-hyd...

Journal: :Macromolecular Rapid Communications 2021

Nonionic double thermoresponsive diblock copolymers with both upper critical solution temperature (UCST) and lower (LCST) phase transitions are synthesized via eco-friendly photoiniferter reversible addition–fragmentation chain transfer polymerization. While the biocompatible random copolymer of di(ethylene glycol) methyl ether methacrylate oligo(ethylene accounts for LCST transition, block pol...

Journal: :علوم و تکنولوژی پلیمر 0
مهرسا امامی رضا مهترانی منیرالسادات ساداتی فرزین هرمزی

this is a report on the study of high melt flow, highly isotactic polypropylene homopolymer synthesized in liquid monomer using a fifth generation ziegler-natta catalytic system. at highest catalyst productivity, the response of thecatalyst to hydrogen as chain transfer is studied. melt flow rate is controlled by hydrogen as chain transfer from 0.4 to 300 g/10min with changing the amount of hyd...

2016
C. J. Mable K. L. Thompson M. J. Derry O. O. Mykhaylyk B. P. Binks S. P. Armes

Polymerization-induced self-assembly (PISA) is used to prepare linear poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate)-poly(benzyl methacrylate) [PGMA-PHPMA-PBzMA] triblock copolymer nano-objects in the form of a concentrated aqueous dispersion via a three-step synthesis based on reversible addition-fragmentation chain transfer (RAFT) polymerization. First, GMA is polymerized ...

2017
Lijuan Zhao Juan Yang Huili Ye Faqiong Zhao Baizhao Zeng

A hydrophilic ionic liquid monomer (i.e. 1-(a-methyl acrylate)-3-vinylimidazolium bromide) was immobilized on carboxylated multi-walled carbon nanotubes (MWNTs) by ion exchange, then reversible addition–fragmentation chain transfer precipitation polymerization (RAFTPP) was performed in the presence of a template, imidacloprid. The obtained imidacloprid imprinted material showed a netlike struct...

Journal: :Macromolecular Rapid Communications 2021

Living cationic polymerization is known for a good control over chain growth yielding polymers with well-defined molar mass distributions and low dispersities. However, the practical challenges involved in synthesis of poly(vinyl ether)s limited suitable post-polymerization modifications (PPM) via chemoselective click reactions. Herein successful controlled vinyl ethers bearing pendant CC doub...

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