화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.11, No.4, 224-230, August, 2003
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Structure -Properties Relations of Polypropylene/ Liquid Crystalline Polymer Blends
N. G. Sahoo, C. K. Das†, Hyewon Jeong1, and Chang-Sik Ha1
  • Materials Science Centre, IIT, Kharagpur-721305, India
  • 1Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, India
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The blends of polypropylene (PP) with glass filled thermotropic liquid crystalline polymer (LCP-g) have been prepared by melt mixing techniques at different blend ratios. The thermal, dynamic mechanical, crystalline and morphological characteristics of these blends were investigated. Higher percent crystallinity was observed for 10% level of LCP-g in the blend in comparison to that of other blend ratios. The thermal stability increased with LCP-g concentration in the blend with PP. The variation of storage modulus, stiffness and loss modulus as a function of blend ratios suggested the phase inversion at the 50% level of LCP-g in the blend. The scanning electron microscopy (SEM) photographs showed the creation of voids and destruction of the fiber structures during the dynamic mechanical measurements. Processing behavior of the blends depended on the fiber forming characteristics of LCP-g, which again varied with the molding temperatures.
Keywords:polypropylene;liquid crystalline polymer;dynamic mechanical properties;thermal properties;morphology;rheology
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