Synthesis and characterization of high grafting density bottle-brush poly(oxa)norbornene-g-poly(ε-caprolactone)
文献信息
发布日期
2016-01-26
DOI
10.1039/C6PY00094K
影响因子
5.582
作者
Duc Anh N'Guyen, Flavien Leroux, Véronique Montembault, Sagrario Pascual, Laurent Fontaine
查看原文
摘要
Poly(ε-caprolactone)-based (oxa)norbornene macromonomers with two poly(ε-caprolactone) (PCL) chains on the polymerizable entity were synthesized through organocatalyst mediated ring-opening polymerization (ROP) in high yields, with excellent control over molecular weights (from 2800 to 11 000 g mol−1) and dispersities (ĐM < 1.26). Ring-opening metathesis polymerization (ROMP) of these macromonomers was carried out using the very active, fast-initiating Grubbs’ second generation catalyst and the fast-initiating, fast-propagating Grubbs’ third generation catalyst. High grafting density poly(oxa)norbornene-g-PCLs were obtained with a backbone length between 10 and 100 repeating units and a graft length between 10 and 48 while retaining a narrow distribution of molecular weights, leading to comb or brush copolymers according to the lengths of the backbone and graft chains. Thermal analyses show a higher stability of the bottle-brush poly(oxa)norbornene-g-PCLs compared to their PCL-based (oxa)norbornene macromonomers together with a weaker crystallinity resulting from steric hindrance.
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来源期刊
Polymer Chemistry
CiteScore:
8.6
自引率:
7.3%
年发文量:
457
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
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