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马来酸酐/二乙烯基苯接枝聚乳酸对微晶纤维素/聚乳酸复合材料性能的影响
引用本文:王发扬,杜军,代璐,吴海超,王友勇,宋永明.马来酸酐/二乙烯基苯接枝聚乳酸对微晶纤维素/聚乳酸复合材料性能的影响[J].化工学报,2019,70(1):327-335.
作者姓名:王发扬  杜军  代璐  吴海超  王友勇  宋永明
作者单位:东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江 哈尔滨 150040
基金项目: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)
摘    要:研究了马来酸酐(MAH)/二乙烯基苯(DVB)接枝聚乳酸(PLA-g-DVB/MAH)对微晶纤维素(MCC)/聚乳酸(PLA)复合材料性能的影响。首先采用熔融接枝法,将DVB作为MAH的共聚单体接枝到PLA分子链上制备PLA-g-DVB/MAH接枝聚合物,然后以PLA-g-DVB/MAH为相容剂,采用注射成型法制备MCC/PLA复合材料。利用FTIR对PLA-g-DVB/MAH进行表征,探究了PLA-g-DVB/MAH对MCC/PLA复合材料流变及力学性能的影响。结果表明,MAH成功接枝到PLA上,并得到接枝聚合物PLA-g-DVB/MAH;添加PLA-g-DVB/MAH后,MCC/PLA复合材料的储能模量、复数黏度、平衡扭矩以及剪切热都有明显升高;PLA-g-DVB/MAH的添加有利于改善MCC和PLA的界面相容性,进而提高了MCC/PLA复合材料的力学性能。

关 键 词:聚乳酸  复合材料  二乙烯基苯  流变学  界面  
收稿时间:2018-07-02
修稿时间:2018-09-29

Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites
Fayang WANG,Jun DU,Lu DAI,Haichao WU,Youyong WANG,Yongming SONG.Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites[J].Journal of Chemical Industry and Engineering(China),2019,70(1):327-335.
Authors:Fayang WANG  Jun DU  Lu DAI  Haichao WU  Youyong WANG  Yongming SONG
Affiliation:Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China
Abstract: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. PLA-g-DVB/MAH graft polymer was synthesized by free-radical melt grafting using divinylbenzene(DVB) as a comonomer. MCC/PLA composites were prepared by injection molding using PLA-g-DVB/MAH as a compatibilizer. The molecular structure of PLA-g-St/MAH was characterized by FTIR and the influence of PLA-g-DVB/MAH on the rheological and mechanical properties of the MCC/PLA composites was also investigated. The results showed that MAH was grafted onto PLA and the graft copolymer of PLA-g-DVB/MAH was obtained successfully. Storage modulus, complex viscosity, equilibrium torque and shear heat increased with the addition of PLA-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.
Keywords:polylactic acid  composites  divinylbenzene  rheology  interface  
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