Journal ArticleDOI
Controlled Radical Polymerization by Degenerative Transfer - Effect of the Structure of the Transfer Agent
TLDR
In this article, various transfer agents of the type R-I were explored, and 1-phenylethyl iodide, iodoacetonitrile, and iodoform were found to be effective in controlling molecular weights and for providing polymers with relatively low polydispersities.Abstract:
Control of the radical polymerization of styrene and acrylates has been achieved by using alkyl iodides in a degenerative transfer process. Various transfer agents of the type R-I were explored. Of those examined, 1-phenylethyl iodide, iodoacetonitrile, and iodoform were found to be effective in controlling molecular weights and for providing polymers with relatively low polydispersities, M w /M n ≤ 1.5. Relatively good control has been also achieved with perfluoroalkyl iodides, whereas most alkyl and aryl iodides have been ineffective transfer agents. Also explored were the effects of initiator structure and reaction temperature on the polymerization systems.read more
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Journal ArticleDOI
Controlled radical polymerization of alkyl acrylates and styrene using a half-sandwich molybdenum(III) complex containing diazadiene ligands
TL;DR: The half-sandwich molybdenum(III) complex CpMoCl 2 (i Pr 2 -dad) ( i Pr 2 −dad= i Pr-NCH-CHN- i Pr) proved to be an effective metal catalyst for the controlled radical polymerization of methyl acrylate, butyl acrylated, and styrene as mentioned in this paper.
Journal ArticleDOI
Metal and Ligand Effects of Photoactive Transition Metal Carbonyls in the Iodine Degenerative Transfer Controlled Radical Polymerization and Block Copolymerization of Vinylidene Fluoride
TL;DR: In this paper, the metal and ligand effect of a series of transition metal carbonyls in conjunction with alkyl and perfluoroalkyl halides was investigated in the initiation and control of the visible light, radical photopolymerizations of vinylidene fluoride (VDF) and respectively, in the synthesis of PVDF block copolymers.
Journal ArticleDOI
Iodine transfer copolymerization of vinylidene fluoride and α‐trifluoromethacrylic acid in emulsion process without any surfactants
Cyrille Boyer,Bruno Ameduri +1 more
TL;DR: In this article, the synthesis and control of poly(VDF-co-TFMA) copolymers were investigated in the presence of two chain transfer agents, 1-perfluorohexyl iodide (C6F13I) and 1,4-diodoperfluorobutane (IC4F8I).
Journal ArticleDOI
Stereospecific living radical polymerization for simultaneous control of molecular weight and tacticity
Masami Kamigaito,Kotaro Satoh +1 more
TL;DR: The simultaneous control of the molecular weights and the tacticity was attained by the judicious combinations of the living/controlled radical polymerizations based on the fast interconversion between the dormant and active species, and the stereospecific radical polymerization mediated by the added Lewis acids or polar solvents via the coordination to the monomer/polymer terminal substituents.
Journal ArticleDOI
Bio-inspired wettability patterns for biomedical applications
Junjie Chi,Junjie Chi,Xiaoxuan Zhang,Xiaoxuan Zhang,Yuetong Wang,Yuetong Wang,Changmin Shao,Changmin Shao,Luoran Shang,Luoran Shang,Yuanjin Zhao,Yuanjin Zhao,Yuanjin Zhao +12 more
TL;DR: This review discusses in detail the various practical applications of wettability patterns in the biomedical field, including cell culture, drug screening and biosensors, and summarizes the general design principles and fabrication methods for preparing artificial wettable materials.