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《CIESC Journal》 2019-01
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Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites

WANG Fayang;DU Jun;DAI Lu;WU Haichao;WANG Youyong;SONG Yongming;Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University;  
The effect of maleic anhydride(MAH)/divinylbenzene(DVB) grafted polylactic acid(PLA-g-DVB/MAH) on the properties of microcrystalline cellulose(MCC)/polylactic acid(PLA) composites was investigated. PLAg-DVB/MAH graft polymer was synthesized by free-radical melt grafting using divinylbenzene(DVB) as acomonomer. MCC/PLA composites were prepared by injection molding using PLA-g-DVB/MAH as acompatibilizer. The molecular structure of PLA-g-St/MAH was characterized by FTIR and the influence of PLA-gDVB/MAH on the rheological and mechanical properties of the MCC/PLA composites was also investigated. Theresults showed that MAH was grafted onto PLA and the graft copolymer of PLA-g-DVB/MAH was obtainedsuccessfully. Storage modulus, complex viscosity, equilibrium torque and shear heat increased with the addition ofPLA-g-DVB/MA; The interfacial compatibility and the mechanical properties of MCC/PLA composites were significantly improved using PLA-g-DVB/MAH as a compatibilizer.
【Fund】: 中央高校基本科研业务费专项资金项目(2572017PZ01);; 国家自然科学基金青年项目(31100425);; 林业科学技术推广项目([2016] 32)
【CateGory Index】: TQ323.41;TB332
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