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Molar mass and temperature dependence of rheological properties of polymethylmethacrylate melt

被引：19
|
作者：
Lu, Zhili [1 ]
Pan, Yamin [1 ,2 ]
Liu, Xianhu [1 ,2 ]
Zheng, Guoqiang [1 ]
Schubert, Dirk W. [2 ]
Liu, Chuntai [1 ]
机构：
[1] Zhengzhou Univ, Natl Engn Res Ctr Adv Polymer Proc Technol, Zhengzhou 450002, Henan, Peoples R China
[2] Friedrich Alexander Univ Erlangen Nuremberg, Inst Polymer Mat, Martensstr 7, D-91058 Erlangen, Germany
来源：
MATERIALS LETTERS | 2018年 / 221卷
关键词：
Activation energy; Amorphous materials; Creep; Molar mass; Viscosity; METHACRYLATE)/CARBON BLACK COMPOSITES; ELECTRICAL-CONDUCTIVITY; SILICA NANOPARTICLES; POLY(METHYL; BEHAVIOR; BLENDS; SHEAR; TIME;
D O I：
10.1016/j.matlet.2018.03.077
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of molar mass and temperature on the rheological properties of polymethylmethacrylate (PMMA) melts was investigated by dynamical mechanical and creep-recovery experiments. The results shown that the steady state viscosities obtained from both experimental modes were in good agreement, and a well linear relationship between the activation energy and molar mass was obtained. The creep compliance of PMMA increased with the molar mass increased or temperature decreased, while the linear steady state recoverable compliance was found to be independent of the molar mass and temperature. Moreover, it was found that the master curves followed the time-temperature superposition principle well in the whole frequency range or time scale. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：62 / 65
页数：4
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