| 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 |
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| 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. DOI: 10.11949/j.issn.0438-1157.20180715 |
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| 作者姓名： | 王发扬 杜军 代璐 吴海超 王友勇 宋永明 |
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| 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 |
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| 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) |
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| 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。
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| 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 |
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| 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. DOI: 10.11949/j.issn.0438-1157.20180715 |
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| Authors: | Fayang WANG Jun DU Lu DAI Haichao WU Youyong WANG Yongming SONG |
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| Affiliation: | Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Harbin 150040, Heilongjiang, China |
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| 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. |
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| Keywords: | polylactic acid composites divinylbenzene rheology interface |
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