Journal
ADVANCES IN POLYMER TECHNOLOGY
Volume 37, Issue 8, Pages 2721-2729Publisher
WILEY-HINDAWI
DOI: 10.1002/adv.21945
Keywords
blends; foaming ability; PA6; polypropylene; pressure-induced-flow processing
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Funding
- National Postdoctoral Program for Innovation Talents [BX201700079]
- China Postdoctoral Science Foundation [2017M620371]
- State Key Laboratory of Bioreactor Engineering
- National Natural Science Foundation of China [51573063]
- Guangdong Natural Science Foundation [S2013020013855]
- Guangdong Science and Technology Planning Project [2014B010104004, 2013B090600126]
- National Basic Research Development Program 973 in China [2012CB025902]
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Pressure-induced-flow (PIF) processing has been considered as an efficient approach to prepare high-performance polymer materials. In this study, the effects of PIF processing on various properties of PP/PA6 blend, including the microstructure, thermal, and mechanical properties, as well as foaming behavior, were investigated. The results showed that PIF processing had a significant effect on the microstructure of PP/PA6 blend. Meanwhile, the thermal stability of PP/PA6 blend was greatly improved. Compared to its counterparts without PIF processing, the mechanical strength of PIF PP/PA6 blend was remarkably enhanced, which was even higher than that of PIF PP (Polypropylene). PIF processing could both strengthen and toughen PP/PA6 blend. Dynamic mechanical analysis (DMA) results also indicated that PIF PP/PA blend had higher strength under dynamic mechanical conditions. Furthermore, the PP/PA6 foams with and without PIF processing were fabricated using a batch foaming method. With PIF processing, the resultant PP/PA6 blend displayed a significantly enhanced foaming ability with higher cell density and larger expansion ratio.
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