中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (05): 15-19 .DOI: 10.19491/j.issn.1001-9278.2008.05.003

• 材料与性能 • 上一篇    下一篇

PE-LLD-g-(GMA-co-St)对PLA/PE-LLD共混体系的反应性增容研究

王晓婷，唐颂超，潘泳康，王庆海   

  1. 华东理工大学材料科学与工程学院，超细材料制备与应用教育部重点实验室，上海200237
  • 收稿日期:2007-12-05 修回日期:1900-01-01 出版日期:2008-05-25 发布日期:2008-05-25

Reactive Compatibilization of PLA/PE-LLD/PE-LLD-g-(GMA-co-St)Blend

WANG Xiao-ting，TANG Sony-chao ，PAN Yong-kang，WANG Qing-hai   

  1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering,East China University of Science and Technology, Shanghai 200237, China
  • Received:2007-12-05 Revised:1900-01-01 Online:2008-05-25 Published:2008-05-25
  • Contact: TANG Sony-chao

摘要： 在聚乳酸( PLA)中加入线形低密度聚乙烯(PE-LLD)进行增韧，并通过相容剂PE-LLD-g-(GMA-co-St)增容PLA和PE-LLD。采用红外光谱、动态流变测试和扫描电子显微镜对共棍物进行了表征，测试了共混物的冲击强度。结果表明，加入PE-LLD-g-(GMA-co-St)能明显提高PLA/PE-LLD的冲击韧性，最高比PLA/PE-LLD简单共混物提高了144%，熔体的锁耗模量G''明显增大，PE-LLD分散相在PLA基体中有更加细微的分散，界面更加模糊，PE-LLD-g-(GMA-co-St)在共混体系中起到自交应性增容作用。

关键词: 聚乳酸, 线形低密度聚乙烯, 甲基丙烯酸缩水甘油酯, 增容, 共混体系

Abstract: Glycidyl mcthacrylatc(GMA)and styrene (St) melting grafted [PE-LLD-g-(GMA-co-St)]was used as a reactive compatibilizer in PLA/PE-LLD) blends, which were characterized by
FTIR, dynamic rhcological test，SEM, and mechanical properties. With the addition of PE-LLD-g-(GMA一co-St)，the Charpy impact strength of the blends increased by 144 % based on plain PLA/PE-LLD blends. In addition, the loss modulus of the blends increased，the particle size of PE-LLD in PLA decreased，both indicating a good compatibilization.

Key words: polvlactide, linear low density polyethylene, glycidyl methacrvlate, compatibilization, blend

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