XIAOYAN LIUa,*, XU CHENa, HONGXING ZHANGb, CHANGJUN ZHANGa, SHIYUAN YANGa, GUANGQUAN LIa
Journal of Polymer Materials, Vol.36, No.2, pp. 121-132, 2019, DOI:10.32381/JPM.2019.36.02.2
Abstract In this work, three in situ impact polypropylene copolymer(IPC) samples were prepared through
Ziegler-Natta catalyst only changing the feed composition (ethylene to ethylene and propylene
molar ratio, C2/C2+C3) in gas-phase polymerization reactor. Polymer (IPC) were characterical
by solvent classification, gel permeation chromatography (GPC), differential scanning calorimetry
(DSC), successive self-nucleation and annealing (SSA), nuclear magnetic resonance(13C-NMR)
and scanning electron microscopy(SEM). The mechanical properties of IPC samples were
tested.The results indicate that with similar ethylene content, the feed composition which
determines the content and structure of EPR and EbP component in IPC, further impacts the
rubber phase size and distribution in IPC,… More >
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