Double Yielding in PA6/TPV-MAH Blends: Effect of Crosslinking Degree of the Dispersed Phase

Tang, XG, Yang, W, Shan, GF, Xie, BH, Yang, MB and Hou, M (2009) Double Yielding in PA6/TPV-MAH Blends: Effect of Crosslinking Degree of the Dispersed Phase. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 47 9: 912-922. doi:10.1002/polb.21698


Author Tang, XG
Yang, W
Shan, GF
Xie, BH
Yang, MB
Hou, M
Title Double Yielding in PA6/TPV-MAH Blends: Effect of Crosslinking Degree of the Dispersed Phase
Journal name JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS   Check publisher's open access policy
ISSN 0887-6266
Publication date 2009-05
Sub-type Article (original research)
DOI 10.1002/polb.21698
Volume 47
Issue 9
Start page 912
End page 922
Total pages 11
Editor R. M. Briber
Place of publication United States of America
Publisher John Wiley & Sons
Collection year 2010
Language eng
Subject C1
091299 Materials Engineering not elsewhere classified
670705 Plastic products (incl. construction materials)
Abstract Thermoplastic vulcanizates (TPVs) based on PP and EPDM (the ratio is 5:5) with different crosslinking degrees were prepared using different contents of phenolic resins, and then blended with polyamide 6 (PA6). The results indicated that with an increase in crosslinking degree, the double yielding phenomenon in PA6/TPV blends became more distinct, the yield stress of the first yield point and the yield stress difference of the two yield points decreased; however, the yield strain of the first yield point did not change with the increasing crosslinking degree of the TPV, but the yield strain of the second yield point increased, resulting in a more broadened yield region. The SEM results showed that with an increase in the crosslinking degree of TPV, the diameter of TPV increased in the core layer, and the orientation degree of TPV in the skin and subskin layer deceased, accompanying with a decrease of the ratio of length to diameter (L/D) of the droplets. The morphology evolution of the PA6/TPV blend during the tensile test was also studied, and the results agreed well with the model we proposed
Keyword blends
PHOTOCROSSLINKED PP/EPDM BLENDS
Crosslinking
crosslinking degree
double yielding
Mechanical Properties
morphology
PA6/TPV blend
polyamides
strain
Stress
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Mechanical & Mining Engineering Publications
 
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Created: Thu, 03 Sep 2009, 08:15:54 EST by Mr Andrew Martlew on behalf of School of Mechanical and Mining Engineering