高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (12): 1856.

• 论文 • 上一篇    下一篇

iPS－b－iPP共聚物对iPS/iPP共混物的性能和形态影响的研究

许光学, 林尚安   

  1. 中山大学高分子研究所, 广州, 510275
  • 收稿日期:1994-04-06 修回日期:1994-08-01 出版日期:1994-12-24 发布日期:1994-12-24
  • 通讯作者: 林尚安.
  • 作者简介:许光学,男,32岁,博士,讲师.
  • 基金资助:

    国家自然科学基金

Effect of iPS-b-iPP Copolymer on Properties and Morphology of iPS/iPP Blends

XU Guang-Xue, LIN Shang-An   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275
  • Received:1994-04-06 Revised:1994-08-01 Online:1994-12-24 Published:1994-12-24

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摘要： 报道了苯乙烯-丙烯等规嵌段共聚物(iPS-b-iPP)增溶作用及iPS-b-iPP/iPS/iPP三组分共混体系微观形态和力学性能的研究结果。iPS-b-iPP的加入明显地改善了iPS/iPP二组分共混物的力学性能；共聚物含量超过15%时,三组分共混物的抗冲击强度超过NIPS的抗冲击强度,并具有较高的耐热性。SEM结果表明,iPS-b-iPP在iPS/iPP共混中起到了相分散和相间“偶联”作用,并降低了共混体系的微相尺寸和增加相间相互作用或粘附性。iPS-b-iPP/iPS/iPP共混合金具有高的软化温度和刚性。

关键词: iPS/iPP共混, 共混, 增溶剂, 苯乙烯－丙烯共聚物

Abstract: The diblock copolymer of isotactic polystyrene and isotactic polypropylene (iPS-b-iPP)was very effective emulsifier for iPS/iPPblend. It was shown that the mechanical properties of iPS-b-iPP/iPS/iPPblend(i.e. lzod impact strength, ultimate elongation and tensile strength at break) dramatically enhanced with the increase of diblock copolymer content. As investigated by DMAand SEM, the characteristic temperature-modulus performance and observed morphology of iPS/iPPblend pair unambiguously supported the interfacial activity of iPS-b-iPPcopolymer as both a dispersant and a "coupling agent". The phase size was significantly reduced, the interfacial adhesion was dramatically increased.

Key words: iPS/iPP blend, Blend, Emulsifier, Styrene-propylene copolymer

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