Melting characteristic and β-crystal content of β-nucleated polypropylene/polyamide 6 alloys prepared using different compounding methods

Yang, Z. , Chen, C., Liang, D., Zhang, Z. and Mai, K. (2009) Melting characteristic and β-crystal content of β-nucleated polypropylene/polyamide 6 alloys prepared using different compounding methods. Polymer International, 58(12), pp. 1366-1372. (doi:10.1002/pi.2671)

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Abstract

BACKGROUND: The distribution of nucleating agents in different phases is still an open question in general, and how to control conditions to prepare alloys rich in β-crystals of polypropylene (PP) is hardly reported. The main goal of this study was to find out the factors influencing the β-crystal content in β-nucleated PP/polyamide 6 (PA6) alloys and determine the best preparation conditions to obtain β-nucleated PP/PA6 alloys rich in β-crystals. RESULTS: The compounding methods had little influence on the crystallization temperature of both PP and PA6. However, the melting characteristic and β-crystal content in β-nucleated PP/PA6 alloys not only depended upon the compounding methods, but also on the temperature at which the nucleating agent was added. A higher β-crystal content can be obtained by adding the nucleating agent at a temperature below 190 °C, which is also dependent on the mixing time. CONCLUSION: It is proved by etching the alloys with sulfuric acid that the nucleating agent mainly disperses in the PA6 phase and/or the interface between PP and PA6 when blended at high temperature.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Yang, Dr Zhugen
Authors: Yang, Z., Chen, C., Liang, D., Zhang, Z., and Mai, K.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Polymer International
Publisher:Wiley
ISSN:0959-8103
ISSN (Online):1097-0126

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