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논문 기본 정보

자료유형
학술저널
저자정보
Tang, Youhong (Centre for NanoScale Science and Technology, School of Computer Science, Engineering and Mathematics, Flinders University) Zuo, Min (Department of Polymer Science and Engineering, Zhejiang University) Gao, Ping (Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제26권 제3호
발행연도
2014.1
수록면
303 - 310 (8page)

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In this study, two thermotropic liquid crystalline polyesters (TLCPs) synthesized by polycondensation of p-hydroxybenzoic acid /hydroquinone/ poly dicarboxylic acid were used as viscosity reduction agents for polyethylene (PE). The TLCPs had different thermal, rheological and other physical properties that were quantitatively characterized. The two TLCPs were blended with high density PE (HDPE) and high molecular mass PE (HMMPE) by simple twin screw extrusion under the same weight ratio of 1.0 wt% and were each rheologically characterized at $190^{\circ}C$. The TLCPs acted as processing modifiers for the PEs and the bulk viscosity of the blends decreased dramatically. However, the viscosity reduction ability was not identical: one TLCP had obviously higher viscosity reduction ability on the HDPE, with a maximum viscosity reduction ratio of 68.1%, whereas the other TLCP had higher viscosity reduction ability on the HMMPE, with a maximum viscosity reduction ratio of 98.7%. Proposed explanations for these differences are evaluated.

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