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Characterization of the Phase-separation in PMMA/α-MSAN Blends Using the Dynamic Viscoelastic Functions
Author(s): 
Pages: 1339-1342
Year: Issue:  8
Journal: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES

Keyword:  聚甲基丙烯酸甲酯聚(α-甲基苯乙烯丙烯腈)共混物熔体动态粘弹函数相分离;
Abstract: 测定了聚甲基丙烯酸甲酯/聚(a-甲基苯乙烯丙烯腈)共混物熔体的动态粘弹性.考察动态储能模量G'与动态损耗模量G"的关系,发现在终端区域两种聚合物的lgG'~IgG"关系曲线与温度无关,其外推直线斜率接近2;而其共混物的斜率明显小于2,并随组成变化呈现温度依赖性,由此得到的"临界温度"可用于表征这种具有LCST行为的共混物的相容性.
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