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Effect of Dimethyl Sulfoxide on Synthesis of Thermoplastic Cellulose-Graft-Poly(L-lactide) Copolymer Using Ionic Liquid as Reaction Media
- Effect of Dimethyl Sulfoxide on Synthesis of Thermoplastic Cellulose-Graft-Poly(L-lactide) Copolymer Using Ionic Liquid as Reaction Media
- Lee, Sung Jun; Lee, Hae Sung; Jeong, Sang Won; Kim, Hyun-Chul; Lee, Se Geun; Oh, Tae Hwan
- DGIST Authors
- Lee, Sung Jun; Jeong, Sang Won; Kim, Hyun-Chul; Lee, Se Geun
- Issue Date
- Journal of Applied Polymer Science, 132(4)
- Article Type
- Biological Materials; Biomaterials; Cellulose; Cellulose and Other Wood Products; Copolymers; Degree of Polymerization; Dimethyl Sulfoxide (DMSO); Glass Transition; Glass Transition Temperature; Graft Polymerization; Grafting (Chemical); High Viscosities; Hydroxyl Groups; Ionic Liquids; Liquids; Low Concentrations; Organic Solvents; Poly (L-Lactide); Polymerization; Reinforced Plastics; Ring Opening Polymerization; Steric Hindrances; Synthesis; Synthesis (Chemical); Thermal Plasticization; Thermoplastics; Viscosity; Wood
- 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.
- Wiley Blackwell
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- Magnet-Controlled Materials Research Group1. Journal Articles
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