Počet záznamů: 1
Controlled grafting of cellulose esters using SET-LRP process
- 1.
SYSNO ASEP 0350691 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Controlled grafting of cellulose esters using SET-LRP process Tvůrce(i) 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) RIDZdroj.dok. Journal of Polymer Science. Part A - Polymer Chemistry. - : WILEY-BLACKWELL - ISSN 0887-624X
Roč. 49, č. 1 (2011), s. 164-173Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova cellulose esters ; copolymerization ; graft copolymers Vědní obor RIV JI - Kompozitní materiály CEP GA106/09/1348 GA ČR - Grantová agentura ČR CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000286344300018 DOI 10.1002/pola.24431 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2011
Počet záznamů: 1