Abstract
A low nematic transition temperature thermotropic liquid crystalline polymer (TLCP), copolyester of HBA/HQ/SA, acts as a processing aid for high molecular mass high density polyethylene (HMMPE). Even at TLCP concentrations of 0.2, 0.5 and 2 wt%, there is a bulk viscosity reduction >90% at 185°C. The processing window is expanded from a shear rate of 100 s-1 to >1000 s-1. Rheo-optical studies show the melt structure is an important factor in reducing viscosity: biphasic, anisotropic TLCP being best. The mechanism is believed to be the forced alignment of HMMPE molecules in the presence of highly oriented TLCP molecules.
| Original language | English |
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| Pages | 1006-1010 |
| Number of pages | 5 |
| Publication status | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1998 56th Annual Technical Conference, ANTEC. Part 1 (of 3) - Atlanta, GA, USA Duration: 26 Apr 1998 → 30 Apr 1998 |
Conference
| Conference | Proceedings of the 1998 56th Annual Technical Conference, ANTEC. Part 1 (of 3) |
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| City | Atlanta, GA, USA |
| Period | 26/04/98 → 30/04/98 |