Controlled radical (co)polymerization of (meth)acrylic esters via the reversible addition-fragmentation chain-transfer mechanism

Autor:	S. D. Zaitsev, L. V. Kurushina, Yu. D. Semchikov, E. V. Vasil’eva
Rok vydání:	2012
Předmět:	Polymers and Plastics Chemistry Radical polymerization Chain transfer chemistry.chemical_compound Monomer Fragmentation (mass spectrometry) Polymerization Homogeneous Polymer chemistry Materials Chemistry Ceramics and Composites Copolymer Organic chemistry Amphiphilic copolymer
Zdroj:	Polymer Science Series B. 54:205-214
ISSN:	1555-6123 1560-0904
DOI:	10.1134/s1560090412040070
Popis:	The homopolymerization of acrylic and fluoroacrylic esters mediated by benzyl dithiobenzoate and dibenzyl trithiocarbonate proceeds in the controlled mode via the reversible addition-fragmentation chain-transfer mechanism, while the controlled radical polymerization of methacrylic esters is not effected under these conditions. The molecular-mass characteristics of the copolymers of acrylic and methacrylic esters may be satisfactorily controlled by benzyl dithiobenzoate-mediated copolymerization when the content of acrylic esters is no less than 50 mol %. If a reversible addition-fragmentation chain-transfer agent active with respect to only one of the monomers is used, compositionally homogeneous narrowly dispersed copolymers are formed via the azeotropic copolymerization of the monomers up to high conversions. The controlled copolymerization of N-vinylpyrrolidone and fluoroacrylates allows the synthesis of alternating narrowly dispersed amphiphilic copolymers with properties different from those of alternating copolymers with a broad molecular-mass distribution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b00c3df858011d402fcbbd6450da3dc4 https://doi.org/10.1134/s1560090412040070 Zobrazit plný text záznamu Full text from SpringerLink