Pressure-Sensitive Supported FI Catalyst for the Precise Synthesis of Uni- and Bimodal Polyethylene

Yu, Feng1; Yang, Yanqiong3; He, Dengfeng1; Gong, Dirong1; Chen, Zhong-Ren2

2017-04-26

10.1021/acs.iecr.7b00083

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH   影响因子和分区

0888-5885

Pressure-sensitive phenoxy-imine titanium catalyst (FI-catalyst) was successfully synthesized by covalently immobilizing it on the surface of functionalized polystyrene (PS) nanoparticles, which acted as a support and a giant ligand simultaneously. The supported catalyst shows high catalytic activities in ethylene polymerization. Utilizing this catalyst, a serious of unimodal polyethylenes with tailored molecular weights ranging from 2 000 000 to 300 000 were produced under various reaction pressures and temperatures. Particularly, when the polymerization pressure was shifted during the reaction, the ethylene polymer with bimodal molecular weight distribution was successfully synthesized in only a single reactor. Differential scanning calorimetry analysis of the resultant polyethylene revealed a large difference between crystallinities at the first and polyethylene is of low entanglement. second heating cycles, indicating that the synthesized

SCI ; EI

英语

通讯

key scientific and technological innovation team of Zhejiang province[2011R50001]

Engineering

Engineering, Chemical

WOS:000400321400007

AMER CHEMICAL SOC

20172303741616

Catalyst activity ; Differential scanning calorimetry ; Ethylene ; Molecular weight distribution ; Polyethylenes ; Polymerization ; Synthesis (chemical)

Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Organic Polymers:815.1.1 ; Polymerization:815.2 ; Atomic and Molecular Physics:931.3 ; Temperature Measurements:944.6

CHEMISTRY

Web of Science

1.Ningbo Univ, Sch Mat Sci & Chem Engn, Dept Polymer Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China
2.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
3.Osaka Univ, Grad Sch Sci, Dept Macromol Sci, Osaka 5600043, Japan

Yu, Feng,Yang, Yanqiong,He, Dengfeng,et al. Pressure-Sensitive Supported FI Catalyst for the Precise Synthesis of Uni- and Bimodal Polyethylene[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2017,56(16):4684-4689.

Yu, Feng,Yang, Yanqiong,He, Dengfeng,Gong, Dirong,&Chen, Zhong-Ren.(2017).Pressure-Sensitive Supported FI Catalyst for the Precise Synthesis of Uni- and Bimodal Polyethylene.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,56(16),4684-4689.

Yu, Feng,et al."Pressure-Sensitive Supported FI Catalyst for the Precise Synthesis of Uni- and Bimodal Polyethylene".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 56.16(2017):4684-4689.