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Hydrolytic degradation of cellulose-graft-poly(L-lactide) copolymers
Yan, Chenghu1,2; Wu, Jin2; Zhang, Jinming2; He, Jiasong2; Zhang, Jun2
2015-08-01
Source PublicationPOLYMER DEGRADATION AND STABILITY
ISSN0141-3910
Volume118Issue:AUGPages:130-136
Abstract

A series of cellulose-g-poly(L-lactide) (cellulose-g-PLLA) copolymers with 30.65-85.21 % PLLA weight content and the molar substitution of PLLA (MSPLLA) from 0.99 to 12.73 were synthesized via the homogeneous graft-from reaction in 1-allyl-3-methylimidazolium chloride (AmimCI) with 4-dimethylaminopyridine (DMAP) acting as the catalyst. In common organic solvents, the solubility of obtained graft copolymers was better than cellulose and strongly depended on the MSPLLA. The hydrolytic degradation of cellulose-g-PLLA copolymers was investigated in phosphate buffered solution (PBS, pH 7.4) at 37 degrees C. Interestingly, it was found that, when the MSPLLA was below 8.83, the hydrolytic degradation rate of cellulose-g-PLLA copolymers was obviously faster than that of both pristine cellulose and PLLA. Moreover, as the MSPLLA, decreased, the cellulose-g-PLLA copolymers showed a more rapid weight loss, due to its higher hydrophilicity. Both XPS and H-1 NMR analyses demonstrated the degradation occurred mainly at PLLA segments. The morphological observations indicated that, during the hydrolytic degradation, the graft copolymers firstly experienced a surface erosion process, and then the bulk erosion happened. (C) 2015 Elsevier Ltd. All rights reserved.

KeywordCellulose Poly(L-lactide) Graft Copolymer Ionic Liquids Hydrolytic Degradation
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.polymdegradstab.2015.04.019
Indexed BySCI
Language英语
WOS KeywordRING-OPENING POLYMERIZATION ; BIODEGRADABLE CELLULOSE DIACETATE-GRAFT-POLY(L-LACTIDE)S ; TRIMETHYLSILYL PROTECTION METHOD ; GRAFT-COPOLYMERS ; CYCLIC ESTERS ; IONIC LIQUID ; L-LACTIDE ; CAPROLACTONE ; RELEASE
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000357243500015
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19322
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, BNLMS, KLEP, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yan, Chenghu,Wu, Jin,Zhang, Jinming,et al. Hydrolytic degradation of cellulose-graft-poly(L-lactide) copolymers[J]. POLYMER DEGRADATION AND STABILITY,2015,118(AUG):130-136.
APA Yan, Chenghu,Wu, Jin,Zhang, Jinming,He, Jiasong,&Zhang, Jun.(2015).Hydrolytic degradation of cellulose-graft-poly(L-lactide) copolymers.POLYMER DEGRADATION AND STABILITY,118(AUG),130-136.
MLA Yan, Chenghu,et al."Hydrolytic degradation of cellulose-graft-poly(L-lactide) copolymers".POLYMER DEGRADATION AND STABILITY 118.AUG(2015):130-136.
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