One-step synthesis of hollow spherical polyethylene by dispersion polymerization

被引:9
|
作者
Gao, Rong [1 ]
Guo, Zifang [1 ]
Zhou, Junling [2 ]
Li, Yan [1 ]
Liu, Dongbing [3 ]
Zhang, Xiaofan [2 ]
机构
[1] Sinopec Beijing Res Inst Chem Ind, Dept Polyethylene, Beijing 100013, Peoples R China
[2] Sinopec Beijing Res Inst Chem Ind, Dept Polypropylene, Beijing 100013, Peoples R China
[3] Sinopec Beijing Res Inst Chem Ind, Dept Catalysis Sci, Beijing 100013, Peoples R China
关键词
Nickel catalyst; Ethylene polymerization; Coordination dispersion polymerization; CONTROLLED/LIVING RADICAL POLYMERIZATION; ETHYLENE POLYMERIZATION; EMULSION POLYMERIZATION; AQUEOUS DISPERSIONS; PARTICLES; CATALYSTS; MICROSPHERES; NICKEL; SIZE;
D O I
10.1016/j.jcat.2020.03.007
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this paper, alpha-diimine nickel catalyst without immobilization was successfully used for one-step synthesis of spherical hollow polyethylene particles at mild condition (1.0 MPa, 25 degrees C) by conducting coordination dispersion polymerization. It was found 2-methyl-2-pentanol (MP) played a key role in the formation of the unusual hollow particular morphology. By varying the addition amount of MP, changing the bulky groups of alkyl aluminum, and adjusting the concentration of nickel catalyst, the particle size was finely tuned. A plausible mechanism was proposed to interpret the formation of these polyethylene hollow particles. (C) 2020 Elsevier Inc. All rights reserved.
引用
收藏
页码:103 / 106
页数:4
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