Results 121 to 130 of about 9,212 (157)

Natural RAFT Polymerization: Recyclable-Catalyst-Aided, Opened-to-Air, and Sunlight-Photolyzed RAFT Polymerizations

ACS Macro Letters, 2016
The successful sunlight-photolyzed reversible addition-fragmentation chain transfer (RAFT) photopolymerization can be reversibly activated and deactivated by irradiation with sunlight in the absence of photocatalyst and photoinitiator. In the present work, the thiocarbonylthio compounds (dithiobenzoate, trithiocarbonate, and xanthate) can all be ...
Jie, Wang, Maria, Rivero, Alexandra, Muñoz Bonilla, Jorge, Sanchez-Marcos, Wentao, Xue, Gaojian, Chen, Weidong, Zhang, Xiulin, Zhu   +7 more
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Polymeric Janus Nanosheets by Template RAFT Polymerization

Macromolecules, 2017
We report a general method to synthesize polymeric Janus nanosheets (PJS) by sequential RAFT grafting from a template particle surface. Layer number and composition of the PJS are tunable by feeding sequence and type of monomers. The cPNIPAM–PS PJS is flexible and thermal responsive, which can form a scrolled superstructure.
Yijiang Liu, Xinyu Xu, Fuxin Liang, Zhenzhong Yang   +3 more
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Fundamentals of RAFT Polymerization

2013
This chapter sets out to describe the fundamental aspects of radical polymerization with reversible addition-fragmentation chain transfer (RAFT polymerization). Following a description of the mechanism we describe aspects of the kinetics of RAFT polymerization, how to select a RAFT agent to achieve optimal control over polymer molecular weight ...
Graeme Moad, Ezio Rizzardo, San H. Thang
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Advances in Switchable RAFT Polymerization

Macromolecular Symposia, 2015
SummaryThis paper reviews recent developments in RAFT Polymerization with proton switchable RAFT agents. We report on the successful use of N‐methyl‐N‐(4‐pyridinyl) dithiocarbamates RAFT agents for controlling the polymerization of N,N‐dimethylacrylamide (DMAm) in aqueous media, the dependence of the RAFT agent activity on acid type and acid strength ...
Graeme Moad, Daniel Keddie, Carlos Guerrero‐Sanchez, Ezio Rizzardo, San H. Thang   +4 more
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Aqueous RAFT Polymerization of Acrylonitrile

Macromolecules, 2016
Controlled radical polymerization of acrylonitrile (AN) in concentrated aqueous solutions of sodium thiocyanate (NaSCN, 50 wt %) and zinc chloride (ZnCl2, 60 wt %) is reported. Reversible addition–fragmentation chain transfer (RAFT) polymerization was successfully accomplished with 4-cyano-4-(phenylcarbonothioylthio)pentanoic acid (CPAD) as a chain ...
Maciej Kopeć, Pawel Krys, Rui Yuan, Krzysztof Matyjaszewski   +3 more
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Amplified Cascade Catalysis for RAFT Polymerization

Angewandte Chemie
AbstractWe report a conceptually new amplified cascade catalysis that converts oxygen to hydroxyl radical for controlled RAFT polymerization. This catalysis consists of two sequential reactions, deoxygenation catalyzed by glucose oxidase and Fenton reaction catalyzed by ferrocene.
Yue Zhao, Shudi Zhang, Zesheng An
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About RAFT polymerization

2007
Not ...
A Alberti, M Benaglia, M Guerra, D Macciantelli   +3 more
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Morphology transitions in RAFT polymerization

Soft Matter, 2010
Polymerization-induced self-assembly and re-organization (PISR) was used to prepare polymeric nanostructured materials with a variety of morphologies. Reversible addition-fragmentation chain transfer (RAFT) polymerization of styrene in a selective solvent, methanol, was carried out using cyanoisopropyl dithiobenzoate-terminated poly(2 ...
Weimin Cai, Wenming Wan, Chunyan Hong, Chuanqun Huang, Caiyuan Pan   +4 more
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RAFT Miniemulsion Polymerization Kinetics, 1 – Polymerization Rate

Macromolecular Theory and Simulations, 2009
AbstractThe polymerization kinetics of a RAFT‐mediated radical polymerization inside submicron particles (30 < Dp < 300 nm) is considered. When the time fraction of active radical period, ϕA, is larger than ca. 1%, the polymerization rate increases with reducing particle size, as for the cases of conventional emulsion polymerization.
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Building nanostructures using RAFT polymerization

Journal of Polymer Science Part A: Polymer Chemistry, 2010
AbstractReversible addition fragmentation chain transfer (RAFT) polymerization is one of the most extensively studied controlled/living radical polymerization methods that has been used to prepare well‐defined nanostructured polymeric materials. This review, with more 650 references illustrates the range of well‐defined functional nanomaterials that ...
Boyer, Cyrille, Stenzel, Martina H., Davis, Thomas P.   +2 more
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