SYNTHESIS OF EXFOLIATED ISOTACTIC POLYPROPYLENE/FUNCTIONAL ALKYL-TRIPHENYLPHOSPHONIUM-MODIFIED CLAY NANOCOMPOSITES BY IN SITU POLYMERIZATION
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SYNTHESIS OF EXFOLIATED ISOTACTIC POLYPROPYLENE/FUNCTIONAL ALKYL-TRIPHENYLPHOSPHONIUM-MODIFIED CLAY NANOCOMPOSITES BY IN SITU POLYMERIZATION
Chinese Journal of Polymer ScienceVol. 31, Issue 11, Pages: 1501-1508(2013)
Affiliations:
a.Fine Chemicals Department, Beijing Research Institute of Chemical Industry, SINOPEC, Beijing 100013, China
b.Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
c.State Key Laboratory of Polymer Physics and Chemistry, Joint Laboratory of Polymer Science and Materials, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Kai Du, Ai-hua He, Fu-yong Bi, et al. SYNTHESIS OF EXFOLIATED ISOTACTIC POLYPROPYLENE/FUNCTIONAL ALKYL-TRIPHENYLPHOSPHONIUM-MODIFIED CLAY NANOCOMPOSITES BY IN SITU POLYMERIZATION[J]. Chinese Journal of Polymer Science, 2013, 31(11): 1501-1508. DOI: 10.1007/s10118-013-1351-3.
DOI:
Kai Du, Ai-hua He, Fu-yong Bi, et al. SYNTHESIS OF EXFOLIATED ISOTACTIC POLYPROPYLENE/FUNCTIONAL ALKYL-TRIPHENYLPHOSPHONIUM-MODIFIED CLAY NANOCOMPOSITES BY IN SITU POLYMERIZATION[J]. Chinese Journal of Polymer Science, 2013, 31(11): 1501-1508. DOI: 10.1007/s10118-013-1351-3.DOI:
SYNTHESIS OF EXFOLIATED ISOTACTIC POLYPROPYLENE/FUNCTIONAL ALKYL-TRIPHENYLPHOSPHONIUM-MODIFIED CLAY NANOCOMPOSITES BY IN SITU POLYMERIZATION
Diphenyl (4-hydroxyphenyl) hexadecyl phosphonium bromide (POH) -modified montmorillonite (POHMMT) was used to prepare a novel TiCl
4
/MgCl
2
/POHMMT compound catalyst and exfoliated
i
PP/POHMMT nanocomposites were prepared by the
in situ
intercalative polymerization of propylene with the TiCl
4
/MgCl
2
/POHMMT compound catalyst. The POH surfactants don’t change the catalytic characteristic of the Z-N catalyst and the obtained PP presents high isotacticity
normal molecular weight and molecular weight distribution. The WAXD
SAXS and TEM results demonstrate the highly exfoliated
i
PP/POHMMT nanocomposites were produced by the
in situ
polymerization with this novel catalyst
while the intercalated
i
PP/ Na
+
MMT nanocomposites were produced with the TiCl
4
/MgCl
2
/Na
+
MMT compound catalyst. Through this approach
in situ
propylene polymerization can actually take place between the silicate layers and lead not only to PP with high isotacticity and molecular weight
but also to highly exfoliated PP nanocomposites.
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INFLUENCE OF CLAY ON THE MORPHOLOGY AND PHASE SEPARATION BEHAVIOR OF POLY(METHYL METHACRYLATE)/POLY(STYRENE-co-ACRYLONITRILE) BLENDS
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