China Plastics ›› 2019, Vol. 33 ›› Issue (2): 35-39.DOI: 10.19491/j.issn.1001-9278.2019.02.007

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Effect of Maleic Anhydride Grafted PS on the Foaming Behavior of PS/PLA Blends

  

  • Received:2018-09-28 Revised:2018-10-14 Online:2019-02-26 Published:2019-03-26
  • Supported by:
    国家自然科学基金(51673004);国家重点研发计划(2016YFB0302203、2016YFB0302205)

Abstract: PS/PLA blends were prepared by melt blending, and the effects of PLA content and maleic-anhydride (MAH)-grafted PS on the solubility of CO2, rheological behavior, phase structure and foaming behavior of the blends were investigated. The results indicated that the solubility of CO2 in PS/PLA blends was effectively improved by PLA, and its solubility increased by 22 % with the addition of 25 phr PLA compared to that in pure PS. The addition of MAH-g-PS significantly enhanced the compatibility of PLA and PS, thus reducing the particle size of dispersed phase and the foam density of PS/PLA blends.