NDLI: Synthesis and characterization of high grafting density bottle-brush poly(oxa)norbornene-g-poly(ε-caprolactone)

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Polymer Chemistry Vol - 7 Issue - 8

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Synthesis and characterization of high grafting density bottle-brush poly(oxa)norbornene-g-poly(ε-caprolactone)

Content Provider	Royal Society of Chemistry (RSC)
Author	N'Guyen, Duc Anh Montembault, Véronique Leroux, Flavien Pascual, Sagrario Fontaine, Laurent
Copyright Year	2016
Abstract	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.
Starting Page	1730
Ending Page	1738
Page Count	9
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	7
Issue Number	9
Journal	Polymer Chemistry
DOI	10.1039/c6py00094k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ring-opening metathesis polymerisation Caprolactone Ring-opening polymerization Norbornene Steric effects Grubbs Grubbs' catalyst Organocatalysis Grafting
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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