Phase diagrams of polyethylene blends by Raman spectroscopy

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 1990 English Publisher:Springer Science and Business Media LLCJournal:Polymer Bulletin, volume 24, pages 241-246 (issn: 0170-0839, eissn: 1436-2449,

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Authors: Jianguo Wang; Deren Pang; Baotong Huang;

doi: 10.1007/bf00297324

Phase diagrams of polyethylene blends by Raman spectroscopy

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Abstract

The Raman internal mode region analysis of polyethylene (PE) is extended to studies of blends of different PEs so as to obtain a phase diagram showing the magnitude of crystalline (Pc), amorphous (Pa) and interfacial (Pb) phases at different compositions. The non-cocrystallizable HDPE/LDPE blends shows additivity in phase structure with blend composition. Enlarged share of Pb is seen for compatible blends of HDPE/LLDPE and especially for HDPE with VLDPE of low crystallinity. This method offers an easy access to direct observing compatibility of different PEs on a molecular level.

Related Organizations

Changchun Institute of Applied Chemistry
China (People's Republic of)
Academia Sinica
Taiwan
Chinese Academy of Sciences
China (People's Republic of)

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