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| Preparation and Properties of Spherical Particles of Polymer Alloy Polypropylene/Polybutene-1 |
Hegang REN1( ), Zhenyou LI2, Yibin YAN1, Sihan WANG1, Xiaopeng CUI3, Binyuan LIU3 |
1 Daqing Petrochemical Research Center, Petrochemical Research Institute of CNPC, Daqing 163714, China
2 Refining and Chemical Branch of CNPC, Beijing 100007, China
3 Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, China |
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Cite this article:
Hegang REN, Zhenyou LI, Yibin YAN, Sihan WANG, Xiaopeng CUI, Binyuan LIU. Preparation and Properties of Spherical Particles of Polymer Alloy Polypropylene/Polybutene-1. Chinese Journal of Materials Research, 2018, 32(7): 518-524.
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Abstract A new type of polymer alloy of polypropylene/polybutene-1 was prepared by in-situ polymerization with spherical Ziegler-Natta as catalyst. The effect of butene-1 addition on the morphology, structure and the properties of polymer alloy was investigated. The polymers obtained were characterized by means of DSC, SEM XRD and 13C NMR. The results show that compared with the bulk polymerization of butene-1, the in-situ polymerization could improve the morphology of the product made from polybutene-1, and effectively reduce the adhesion between polymer particles. The catalytic activity, stacking density and particle size of the prepared polymer alloy are 10.4 kg/gCat, 0.44 g/cm3 and 500 μm, respectively. Moreover, the in-situ polymerization could effectively shorten the transition period of the polybutene-1 product from the unstable crystal form II to the stable crystalline form I. The mechanical property test revealed that with the rise of the content of the structural unit in propylene the tensile strength and flexural modulus of the polybutene alloys were increased, however, the density, impact strength and elongation at break were decreased.
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Received: 15 August 2017
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