中国塑料 ›› 2016, Vol. 30 ›› Issue (04): 61-68 .DOI: 10.19491/j.issn.1001-9278.2016.04.011

• 材料与性能 • 上一篇    下一篇

sPS/PBA-aPS共混体系的相容性及分散性研究

孙星星1,刘喜军2,娄春华3,于野4,张学全5   

  1. 1. 黑龙江省齐齐哈尔大学2. 齐齐哈尔大学化工学院3. 东北林业大学;齐齐哈尔大学4. 齐齐哈尔大学 材料科学与工程学院5. 中国科学院长春应用化学研究所
  • 收稿日期:2015-10-20 修回日期:2015-12-26 出版日期:2016-04-26 发布日期:2016-04-26

Studies on Compatibility and Dispersibility of sPS/PBA-aPS Blend

  • Received:2015-10-20 Revised:2015-12-26 Online:2016-04-26 Published:2016-04-26

摘要: 采用自制的聚丙烯酸丁酯无规立构聚苯乙烯(PBA-aPS)核壳乳胶粒子增韧改性间规立构聚苯乙烯(sPS),通过差示扫描量热仪(DSC)、旋转流变仪、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和红外/近红外成像系统等手段研究了sPS/PBA-aPS共混体系的相容性及分散性。结果表明,PBA-aPS具有润滑和增稠双重作用;PBA-aPS的引入导致共混物的玻璃化转变温度和熔点均略有下降;在实验测试温度、频率范围内,sPS/PBA-aPS共混体系没有出现相分离,表明sPS与PBA-aPS具有良好的相容性;分散相PBA-aPS在基体sPS中分散均匀,但含量大于30 %(质量分数,下同)时,部分PBA-aPS出现团聚现象。

关键词: 间规立构聚苯乙烯, 核壳乳胶粒子, 相容性, 分散性

Abstract: In this paper, the syndiotacticpolystyrene (sPS) was toughened with home-made poly(butyl acrylate)-atactic polystyrene (PBA-aPS) core-shell latex particles, and the compatibility and dispersity of the sPS/PBA-aPS blend were studied by differential scanning calorimetry (DSC), rotational rheometer, transmission electron microscope (TEM), scanning electron microscope (SEM), and infrared/near-infrared imaging system. It showed that the PBA-aPS core-shell latex particles had a dual role of lubrication and thickening.The glass transition temperature and melting point of the blends decreased slightly with the addition of PBA-aPS. No phase separation appeared in sPS/PBA-aPS blend under the test temperature and frequency range. Uniform dispersibility of PBA-aPS was observed in sPS with optimum contents, but excessive PBA-aPS (>30 %) will cause particle aggregation.

Key words: syndiotactic polystyrene, core-shell latex particle, compatibility, dispersibility