Effect of Pore Structures of Porous Polymer Microspheres on Catalytic Propylene Polymerization

doi:10.11944/j.issn.1000-0518.2020.07.200024

Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (7): 746-755.DOI: 10.11944/j.issn.1000-0518.2020.07.200024

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Effect of Pore Structures of Porous Polymer Microspheres on Catalytic Propylene Polymerization

YANG Zhengjun^a,b,c, LIU Bo^b,*, HUANG Pai^b, NIE Heran^d, ZHOU Guangyuan^d, ZHANG Jianfu^a,c,*

^aSchool of Chemistry and Environmental Engineering,Changchun University of Science and Technology,Changchun 130022,China;
^bKey Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
^cJilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry,Changchun, 130022,China;
^dDalian Institute of Chemical Physics, Chinese Academy of Sciences,Dalian,Liaoning 116023,China

Received:2020-01-17 Published:2020-07-01 Online:2020-07-07
Contact: ZHANG Jianfu, associate professor; Tel/Fax:0431-85583008; E-mail:zhangjianfu@ cust.edu.cn; Research interests:polymeric interfacial materials Co-corresponding author:LIU Bo, assistant professor; Tel:0431-85262537; Fax:0431-85685653; E-mail:bliu@ciac.ac.cn; Research interests:polyolefin catalyst
Supported by:
Supported by the National Natual Science Foundation of China(No.21704098) and the Science and Technology Development Project of Jilin Province, China(No.20180524141JH)

Abstract

Abstract: The microporous poly(styrene-divinylbenzene) (PS-DVB) microspheres have the advantages of stable physical and chemical properties, large specific surface area, low production cost, and controllable particle sizes. It has broad application prospects in the fields of biomedicine, adsorption, separation and catalyst support. Three kinds of porous polymer microspheres (PPMs) were prepared by introducing the functional monomers acrylonitrile (AN), acrylamide (AA) and N-vinyl carbazole (VC). The results show that, on the one hand, polypropylenes are microspheres and nanofibers due to the template effect and confined effect. On the other hand, the load of Ti and Mg in the Ziegler-Natta catalyst supported by PPM-AN increases with the increase of specific surface area of the support. The results of propylene polymerization show that under the same pressure, the overall trend of molecular mass (M_w), molecular mass distribution (PDI) and isotacticity increase with the increase of pore size because the propylene monomer is restricted by PPM-AN support.

Key words: porous polymer microspheres, polypropylene catalyst support, confined olefin polymerization, confined crystallization of polypropylene

YANG Zhengjun, LIU Bo, HUANG Pai, NIE Heran, ZHOU Guangyuan, ZHANG Jianfu. Effect of Pore Structures of Porous Polymer Microspheres on Catalytic Propylene Polymerization[J]. Chinese Journal of Applied Chemistry, 2020, 37(7): 746-755.

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Effect of Pore Structures of Porous Polymer Microspheres on Catalytic Propylene Polymerization

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