Effects of thermotropic LCP on rheologica behavior of high molecular mass polyethylene/organoclay composites

You-hong Tang; Hong-mei Yang; Ping Gao

doi:10.1007/s11771-007-0243-5

Journal of Central South University ›› 2007, Vol. 14 ›› Issue (Suppl 1) : 192 -195. DOI: 10.1007/s11771-007-0243-5

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Effects of thermotropic LCP on rheologica behavior of high molecular mass polyethylene/organoclay composites

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Abstract

A thermotropic liquid crystalline polymer (TLCP) based on hydroxybenzoic acid, hydroquinone and sebacic acid was used as a processing aid in the extrusion of high molecular mass polyethylene (HMMPE)/clay nanocomposites. Clay/TLCP with optimal mass ratio loading in HMMPE matrix has better thermal stability than that of clay or TLCP blends. Capillary rheometry experiments were carried out at processing temperature 190 °C with TLCP in the full nematic phase. TLCP is an effective processing aid agent with viscosity reduction in excess of 95%. The mechanism is proposed and analyzed by morphological study and surface analysis. TLCP has been shown to act as both a compatiblizer between nanoclay and the HMMPE matrix and a processing aid for the nanocomposite.

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thermotropic liquid crystalline polyesters / polyethylene nanocomposites / viscosity reduction

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You-hong Tang, Hong-mei Yang, Ping Gao. Effects of thermotropic LCP on rheologica behavior of high molecular mass polyethylene/organoclay composites. Journal of Central South University, 2007, 14(Suppl 1): 192-195 DOI:10.1007/s11771-007-0243-5

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References

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