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http://dx.doi.org/10.5012/bkcs.2012.33.12.4122

The Synthesis of Cellulose-graft-poly (L-lactide) by Ring-opening Polymerization and the Study of Its Degradability  

Dai, Lin (Institute of Materials Science and Technology, Beijing Forestry University)
Xiao, Shu (Institute of Materials Science and Technology, Beijing Forestry University)
Shen, Yue (Institute of Materials Science and Technology, Beijing Forestry University)
Qinshu, Baichuan (Institute of Materials Science and Technology, Beijing Forestry University)
He, Jing (Institute of Materials Science and Technology, Beijing Forestry University)
Publication Information
Bulletin of the Korean Chemical Society / v.33, no.12, 2012 , pp. 4122-4126 More about this Journal
Abstract
Cellulose-graft-poly (L-lactide) (cellulose-g-PLLA) was successfully prepared via ring-opening polymerization (ROP) by using 4-dimethylaminopyridine (DMAP) as an organic catalyst in an ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl). The structure and morphology of the polymer was characterized by nuclear magnetic resonance (NMR) and transmission electron microscope (TEM). From wide-angle X-ray powder diffraction (WAXD) and degradation test (by acid, alkaline, PBS and enzyme solution), changes in the crystalline structure as a result of degradation was also investigated. The results indicated that materials which have low degree of crystallinity showing higher degradability, however, in acid liquor, enzyme solution, alkaline liquor and PBS system, the degradation rate of the polymer decreased by the above sequence. Moreover, with the further increase of graft degree of this material, its degradation degree decreased.
Keywords
Cellulose; Poly(L-lactide) (PLLA); Ring-opening polymerization (ROP); Ionic liquid; Degradability;
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