Crystallization of Poly (ethylene glycol) in Poly (methyl methacrylate) Networks

  • Yong LI School of Mechanical Engineering, North China University of Water Conservancy and Electric Power
  • Qiuhua MA College of Material Science and Engineering, Henan University of Technology
  • Caiyi HUANG Ningbo University's Faculty of Science, Ningbo University
  • Guoqin LIU College of Material Science and Engineering, Henan University of Technology
Keywords: poly(ethylene glycol), poly(methyl methacrylate), spherulitic, crystallization, melting point

Abstract

The crystallization of poly(ethylene glycol) (PEG) in poly(methyl methacrylate) (PMMA) networks were studied, which was compared with that of PEG homopolymer. Melting point (Tm) of PEG in PMMA networks is lower than that of pure PEG; the crystallinity and Tms of PEG in PMMA networks somewhat increase with increasing of PEG content; the cross-linker content of PMMA networks plays an important role for the crystallization of PEG. When the cross-linker content is between 3.5 wt% and 5.8 wt%, the distinct endothermic peak of PEG crystal fusion can be observed. Optical microscopic observation of the crystallized PEG in PMMA networks showed spherulite formation, indicating there was the co-continuous crystalline PEG in PMMA networks.

DOI: http://dx.doi.org/10.5755/j01.ms.19.2.4430

Published
2013-05-23
Section
POLYMERS AND COMPOSITES