

FOLLOWUS
a.Key Laboratory of Salt Lake Resources Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
b.Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
c.University of Chinese Academy of Sciences, Beijing 100049, China
Wu Li (李武), E-mail:liwu2016@126.com
Received:16 February 2017,
Revised:2017-3-12,
Accepted:13 March 2017,
Published:05 September 2017
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Li Dang, Xue-ying Nai, Xin Liu, et al. Effects of Different Compatibilizing Agents on the Interfacial Adhesion Properties of Polypropylene/Magnesium Oxysulfate Whisker Composites[J]. Chinese Journal of Polymer Science, 2017, 35(9): 1143-1155.
Li Dang, Xue-ying Nai, Xin Liu, et al. Effects of Different Compatibilizing Agents on the Interfacial Adhesion Properties of Polypropylene/Magnesium Oxysulfate Whisker Composites[J]. Chinese Journal of Polymer Science, 2017, 35(9): 1143-1155. DOI: 10.1007/s10118-017-1953-2.
The effects of maleic anhydride-grafted polypropylene (PP-
g
-MAH) and maleic anhydride-grafted polyolefin elastomer (POE-
g
-MAH) on interfacial adhesion properties of the polypropylene/magnesium oxysulfate whiskers (PP/MOSw) composites were investigated
via
mechanical
thermal
ATR-FTIR and rheological tests. Although significant increases in yield strength and Young's modulus were observed in PP-
g
-MAH treated composites
a sharp decline in these properties was observed in POE-
g
-MAH treated composites. ATR-FTIR results indicated that esterification occurred between the hydroxyl groups of MOSw and the carbonyls of anhydrides of both compatibilizers but POE-
g
-MAH was still incompatible with the PP matrix
as verified by the presence of shoulder peaks in DTG curves and numerous voids in SEM micrographs. On the other hand
PP-
g
-MAH was highly compatible with the PP matrix
as evidenced by the peaks in DTG curves and vague interfaces with wrapped melts on the surface of MOSw. Rheological behaviors also confirmed that introducing PP-
g
-MAH resulted in a transition from liquid-like to solid-like
which was attributed to the stronger interfacial adhesion between MOSw and the PP matrix. POE-
g
-MAH treated composites
in contrast to PP-
g
-MAH
maintained liquid-like rheological behaviors as typical molten polymers. There is likely a MOSw network formed in the PP/15PP-
g
-MAH/15MOSw composite as suggested by the significant deviation of
G
' versus
G
″ plots and the two crossover frequencies observed in plots of tan
δ
versus frequency.
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