Open Access
ARTICLE
Effect of Feed Composition in Gas-phase Polymerization on Structure and Properties of In Situ Impact Polypropylene Copolymer
XIAOYAN LIUa,*, XU CHENa, HONGXING ZHANGb, CHANGJUN ZHANGa, SHIYUAN YANGa, GUANGQUAN LIa
a
Lanzhou Petrochemical Research Center, Petrochemical Research Institute, Petro China ,
Lanzhou, Gansu 730060, China
b
Lanzhou Petrochemical Company, PetroChina, Lanzhou, Gansu 730060, China
* Corresponding Author: e-mail:
Journal of Polymer Materials 2019, 36(2), 121-132. https://doi.org/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, plays an key role in determining the impact toughness
of IPC.
Keywords
Cite This Article
APA Style
LIU, X., CHEN, X., ZHANG, H., ZHANG, C., YANG, S. et al. (2019). Effect of feed composition in gas-phase polymerization on structure and properties of in situ impact polypropylene copolymer. Journal of Polymer Materials, 36(2), 121-132. https://doi.org/10.32381/JPM.2019.36.02.2
Vancouver Style
LIU X, CHEN X, ZHANG H, ZHANG C, YANG S, LI G. Effect of feed composition in gas-phase polymerization on structure and properties of in situ impact polypropylene copolymer. J Polym Materials . 2019;36(2):121-132 https://doi.org/10.32381/JPM.2019.36.02.2
IEEE Style
X. LIU, X. CHEN, H. ZHANG, C. ZHANG, S. YANG, and G. LI "Effect of Feed Composition in Gas-phase Polymerization on Structure and Properties of In Situ Impact Polypropylene Copolymer," J. Polym. Materials , vol. 36, no. 2, pp. 121-132. 2019. https://doi.org/10.32381/JPM.2019.36.02.2