Effect of temperature gradient on the development of beta phase polypropylene in dynamically vulcanized PP/EPDM blends

Tang, Xue-Gang, Yang, Wei, Shan, Gui-Fang, Yang, Bin, Xie, Bang-Hu, Yang, Ming-Bo and Hou, Meng (2009) Effect of temperature gradient on the development of beta phase polypropylene in dynamically vulcanized PP/EPDM blends. Colloid and Polymer Science, 287 10: 1237-1242. doi:10.1007/s00396-009-2092-2


Author Tang, Xue-Gang
Yang, Wei
Shan, Gui-Fang
Yang, Bin
Xie, Bang-Hu
Yang, Ming-Bo
Hou, Meng
Title Effect of temperature gradient on the development of beta phase polypropylene in dynamically vulcanized PP/EPDM blends
Journal name Colloid and Polymer Science   Check publisher's open access policy
ISSN 0303-402X
1435-1536
Publication date 2009-10
Year available 2009
Sub-type Article (original research)
DOI 10.1007/s00396-009-2092-2
Volume 287
Issue 10
Start page 1237
End page 1242
Total pages 6
Editor Friedrich Kremer
Walter Richtering
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2010
Language eng
Subject 091299 Materials Engineering not elsewhere classified
670705 Plastic products (incl. construction materials)
Abstract Different sample thicknesses were adopted to investigate the effect of temperature gradient on the development of beta phase polypropylene (PP) in the compression-molded dynamically vulcanized thermoplastic elastomers (TPVs) based on PP/ethylene-propylene-diene rubber blend. Differential scanning calorimetry and wide-angle X-ray diffraction were employed to study the melting behavior and crystalline structures. The results indicated that the content of beta phase increased with the sample thickness of TPV increasing, while the total crystallinity of PP almost kept constant. The simulation of the temperature field showed that there was a temperature gradient along the direction of sample thickness, and the strength of the temperature gradient increased with the thickness of TPV increasing. The reason for the change of beta phase content was found to lie in the reduction of the entropy in the temperature gradient field, which was a result from the decrease of the molecular chain conformation.
Keyword Temperature gradient field
Beta phase
Dynamically vulcanized PP/EPDM blend (TPV)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 25 August 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Mechanical & Mining Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 30 Mar 2010, 15:21:01 EST by Rose Clements on behalf of School of Mechanical and Mining Engineering