高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (1): 166-169.

• 研究论文 • 上一篇    下一篇

聚甲基丙烯酸甲酯/聚(苯乙烯-马来酸酐)共混体系相分离的流变学行为

李润明1,2, 俞炜1, 周持兴1   

  1. 1. 上海交通大学化学化工学院, 上海 200240; 2. 河南大学化学化工学院,  开封 475001
  • 收稿日期:2005-01-14 出版日期:2006-01-10 发布日期:2006-01-10
  • 通讯作者: 周持兴(1943年出生), 男, 教授, 主要从事聚合物加工研究. E-mail: cxzhou@sjtu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20490220, 50390090, 20204007)资助

Rheological Behavior of  Phase-separation in PMMA/SMA Blends

LI Run-Ming 1, 2 , YU Wei 1, ZHOU Chi-Xing 1*   

  1. 1. College of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;
    2. College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China
  • Received:2005-01-14 Online:2006-01-10 Published:2006-01-10
  • Contact: ZHOU Chi-Xing , cxzhou@sjtu.edu.cn

摘要:

采用动态流变学方法, 对聚甲基丙烯酸甲酯(PMMA)/聚(苯乙烯-马来酸酐)(PSMA)共混体系的相行为进行了研究. 相分离温度由动态储能模量对温度曲线斜率的转折点确定. 结果表明, 表观相分离温度有很大的频率依赖性, 因此, 动态流变学方法应用于相分离温度测定时要外推到频率为零.

关键词: 甲基丙烯酸甲酯/聚(苯乙烯-马来酸酐)共混体系; 动态流变行为; 相分离

Abstract:

The dynamic viscoelasticity of poly(methyl methacrylate)(PMMA)/poly(styrene-co-maleic anhydirde)(SMA) blends in the molten state was investigated. The apparent phase separation was marked by a change in slope of the storage modulus and the occurrence of a peak in the loss tangent as a function of temperature. It was found that the apparent phase separation temperatures are strongly dependent on the frequency applied. The phase separation temperature obtained through extrapolation to zero frequency was lower than the cloud point by turbidity method.

Key words: Poly(methyl methacrylate)/poly(styrene-co-maleic anhydride) blends; Dynamic rheological behavior; Phase separation

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