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
Author(s)
오태환이성준이해성[이해성]정상원[정상원]김현철[김현철]이세근[이세근]
Keywords
CELLULOSE DISSOLUTION; COSOLVENT; SOLVATION; CHLORIDE; SOLVENT; SYSTEM
Issue Date
201501
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF APPLIED POLYMER SCIENCE, v.132, no.4
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(l-lactide) (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 H-1-NMR. The prepared cell-g-PLLA copolymers showed thermal plasticization with a glass transition temperature of 155 degrees C. In addition, the thermal processibility could be improved as the amount of grafted PLLA in the copolymer increased. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41331.
URI
http://hdl.handle.net/YU.REPOSITORY/33670http://dx.doi.org/10.1002/app.41331
ISSN
0021-8995
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공과대학 > 화학공학부 > Articles
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