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Effect of Dimethyl Sulfoxide on Synthesis of Thermoplastic Cellulose-Graft-Poly(L-lactide) Copolymer Using Ionic Liquid as Reaction Media

Title
Effect of Dimethyl Sulfoxide on Synthesis of Thermoplastic Cellulose-Graft-Poly(L-lactide) Copolymer Using Ionic Liquid as Reaction Media
Authors
Lee, Sung JunLee, Hae SungJeong, Sang WonKim, Hyun-ChulLee, Se GeunOh, Tae Hwan
DGIST Authors
Lee, Sung JunJeong, Sang WonKim, Hyun-ChulLee, Se Geun
Issue Date
2015-01-20
Citation
Journal of Applied Polymer Science, 132(4)
Type
Article
Article Type
Article
Keywords
Biological MaterialsBiomaterialsCelluloseCellulose and Other Wood ProductsCopolymersDegree of PolymerizationDimethyl Sulfoxide (DMSO)Glass TransitionGlass Transition TemperatureGraft PolymerizationGrafting (Chemical)High ViscositiesHydroxyl GroupsIonic LiquidsLiquidsLow ConcentrationsOrganic SolventsPoly (L-Lactide)PolymerizationReinforced PlasticsRing Opening PolymerizationSteric HindrancesSynthesisSynthesis (Chemical)Thermal PlasticizationThermoplasticsViscosityWood
ISSN
0021-8995
Abstract
In this study, ring-opening graft polymerization of L-lactide onto cellulose was carried out homogeneously in ionic liquid (IL)/dimethyl sulfoxide (DMSO) co-solvent as a reaction media. Through the effective control of high viscosity and steric hindrance caused by the interaction between the IL and the hydroxyl group of cellulose by adding DMSO as a co-solvent, cellulose-graft-poly(Llactide) (Cell-g-PLLA) copolymer with higher substitution efficiency was successfully prepared, at relatively low concentration of L-lactide. The maximum values of molar substitution, degree of lactyl substitution, and degree of polymerization of poly(L-lactide) in the copolymer were 3.76, 1.74, and 2.16, respectively, determined by 1H-NMR. The prepared cell-g-PLLA copolymers showed thermal plasticization with a glass transition temperature of 155C. In addition, the thermal processibility could be improved as the amount of grafted PLLA in the copolymer increased. © 2014 Wiley Periodicals, Inc.
URI
http://hdl.handle.net/20.500.11750/5208
DOI
10.1002/app.41331
Publisher
Wiley Blackwell
Related Researcher
Files:
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Collection:
Magnet-Controlled Materials Research Group1. Journal Articles


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