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

doi:10.11949/j.issn.0438-1157.20180715

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Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites

Material science and engineering, nanotechnology | 更新时间：2020-06-24

- Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites
- CIESC Journal Vol. 70, Issue 1, Pages: 327-335(2019)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180715
  CLC： TB 332
- Received：02 July 2018，
  
  Revised：2018-09-29，
  
  Published：05 January 2019
- 稿件说明：
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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

WANG Fayang, DU Jun, DAI Lu, WU Haichao, WANG Youyong, SONG Yongming. Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites[J]. CIESC Journal, 2019, 70(1): 327-335
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.

WANG Fayang, DU Jun, DAI Lu, WU Haichao, WANG Youyong, SONG Yongming. Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites[J]. CIESC Journal, 2019, 70(1): 327-335 DOI： 10.11949/j.issn.0438-1157.20180715.

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。

Abstract

The effect of maleic anhydride (MAH)/divinylbenzene (DVB) grafted polylactic acid (PLA-

-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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references

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