Title: A STUDY OF THE CRYSTALLIZATION BEHAVIOUR OF DYNAMICALLY VULCANIZED EPDM/NYLON COPOLYMER BLENDS
Page Range: p.449-464
Author(s): Liu X; Huang H; Zhang Y; Zhang Y
File size: 188K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 11
Issue No: No. 6
Abstract
This paper explores the effects of dynamic vulcanisation, rubber and compatibiliser on the crystallisation of nylon in thermoplastic elastomers based on EPDM/nylon copolymer blends. The crystallisation kinetics were studied under non-isothermal and isothermal conditions from the melt and differential scanning calorimetry was used to monitor the energetics of the crystallisation process. Relative crystallisation was shown to develop in accordance with the time dependence described by the Avrami equation. Experimental results indicate that the EPDM rubber is not the nucleating agent in those samples that were not dynamically vulcanised, and that the addition of chlorinated polyethylene has no effect on the crystallisation of nylon. However, in dynamically vulcanised samples, the EPDM rubber is a nucleating agent and the addition of chlorinated PE helps the EPDM to form fine and well-dispersed particles, and improve the crystallisation of nylon. 32 refs.
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