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Controlled grafting of cellulose esters using SET-LRP process
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SYSNO ASEP 0350691 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Controlled grafting of cellulose esters using SET-LRP process Author(s) Vlček, Petr (UMCH-V) RID
Raus, Vladimír (UMCH-V) RID, ORCID
Janata, Miroslav (UMCH-V) RID
Kříž, Jaroslav (UMCH-V) RID
Sikora, Antonín (UMCH-V) RIDSource Title Journal of Polymer Science. Part A - Polymer Chemistry. - : WILEY-BLACKWELL - ISSN 0887-624X
Roč. 49, č. 1 (2011), s. 164-173Number of pages 10 s. Language eng - English Country US - United States Keywords cellulose esters ; copolymerization ; graft copolymers Subject RIV JI - Composite Materials R&D Projects GA106/09/1348 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000286344300018 DOI 10.1002/pola.24431 Annotation We present the application of SET-LRP process to a grafting of cellulose diacetate (CDA), and cellulose acetate butyrate (CAB). The macroinitiators with various functionality densities have been prepared by acylation of the backbones with 2-bromoisobutyryl (BrIB) or dichloroacetyl (DCA) groups. MMA was polymerized using DCA-functionalized macroinitiators in the presence of PMDETA as a ligand. At 30 °C, the reaction is slow, whereas the higher temperature (60 °C) speeds up the polymerization so that MMA conversion is 30% after 5 h. For BuA and t-BuA grafting, BrIB-functionalized macroinitiators are more convenient in a combination with Cu(0) and Me6TREN ligand.. Kinetic studies show “living” character of both the graftings. Important advantages of SET-LRP, compared with classic ATRP, are (i) higher polymerization rate, (ii) lower extent of recombination of the growing grafts and (iii) negligible coloration of the products with catalytic residua. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2011
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