Controlled grafting of cellulose esters using SET-LRP process

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00350691" target="_blank" >RIV/61389013:_____/11:00350691 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Controlled grafting of cellulose esters using SET-LRP process
Original language description
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 MMAconversion 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
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Project
<a href="/en/project/GA106%2F09%2F1348" target="_blank" >GA106/09/1348: Synthesis and mechanical properties of nanocomposites with tailored organoclays</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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