Full Text:   <1136>

CLC number: O632.52

On-line Access: 

Received: 2000-11-21

Revision Accepted: 2001-03-29

Crosschecked: 0000-00-00

Cited: 0

Clicked: 3516

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2001 Vol.2 No.4 P.366~371

http://doi.org/10.1631/jzus.2001.0366


POLYMERIZATION OF METHYL METHACRYLATE WITH ETHYLENE BRIDGED HETERODINUCLEAR METALLOCENE OF SAMARIUM AND TITANIUM—STUDY ON SYNERGISM AND KINETICS


Author(s):  SUN Jun-quan, PAN Zhi-da, HU Wei-qiu, YANG Shi-lin

Affiliation(s):  College of Material Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s): 

Key Words:  heterodinuclear metallocene, heterodinuclear synergism, methyl methacrylate, polymerization, kinetics, titanocene, lanthanocene


Share this article to: More

SUN Jun-quan, PAN Zhi-da, HU Wei-qiu, YANG Shi-lin. POLYMERIZATION OF METHYL METHACRYLATE WITH ETHYLENE BRIDGED HETERODINUCLEAR METALLOCENE OF SAMARIUM AND TITANIUM—STUDY ON SYNERGISM AND KINETICS[J]. Journal of Zhejiang University Science A, 2001, 2(4): 366~371.

@article{title="POLYMERIZATION OF METHYL METHACRYLATE WITH ETHYLENE BRIDGED HETERODINUCLEAR METALLOCENE OF SAMARIUM AND TITANIUM—STUDY ON SYNERGISM AND KINETICS",
author="SUN Jun-quan, PAN Zhi-da, HU Wei-qiu, YANG Shi-lin",
journal="Journal of Zhejiang University Science A",
volume="2",
number="4",
pages="366~371",
year="2001",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2001.0366"
}

%0 Journal Article
%T POLYMERIZATION OF METHYL METHACRYLATE WITH ETHYLENE BRIDGED HETERODINUCLEAR METALLOCENE OF SAMARIUM AND TITANIUM—STUDY ON SYNERGISM AND KINETICS
%A SUN Jun-quan
%A PAN Zhi-da
%A HU Wei-qiu
%A YANG Shi-lin
%J Journal of Zhejiang University SCIENCE A
%V 2
%N 4
%P 366~371
%@ 1869-1951
%D 2001
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2001.0366

TY - JOUR
T1 - POLYMERIZATION OF METHYL METHACRYLATE WITH ETHYLENE BRIDGED HETERODINUCLEAR METALLOCENE OF SAMARIUM AND TITANIUM—STUDY ON SYNERGISM AND KINETICS
A1 - SUN Jun-quan
A1 - PAN Zhi-da
A1 - HU Wei-qiu
A1 - YANG Shi-lin
J0 - Journal of Zhejiang University Science A
VL - 2
IS - 4
SP - 366
EP - 371
%@ 1869-1951
Y1 - 2001
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2001.0366


Abstract: 
Comparison of MMA polymerization results with samarocene chloride, titanocene chloride and the title heterodinuclear (Sm-Ti) catalyst, respectively, showed synergism in the Sm-Ligand-Ti system, which obviously influenced the polymerization behaviors, for example, of yielding higher activity and higher molecular weight polymer. Kinetic studies on polymerization of MMA with ethylene bridged samarocene and titanocene chloride/M(i-Bu)3 showed that the polymerization rate was first-order on the catalyst concentration, and 1.9-order on the monomer. The overall activation energy measured was 52.8 kJ/mol.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Adams, R.D., 1988. Foreward. Polyhedron, 7:2251-2252.

[2] Chen Shoushan, 1986. Synthesis Handbook of Organometallic Compounds, Chem. Ind. Press, Beijing, p.184.

[3] Hudeczek, P., Koehler, F. H., 1992. Paramagnetic decamethylbimetallocenes. Organometallics, 11:1773-1775.

[4] Jerschow, A., Ernst, E., Hemnan,W. et al., 1995. Nuclear magnetic resonance evidence for anew microstructure in ethene-cyclopentene copolymers. Macromolecules, 28:7095-7099.

[5] Meyer, T.J., 1989. Chemical approaches to artificial photosynthesis. Acc. Chem. Res., 22(5):163-170.

[6] Mitani,M., Oouchi,K., Hayakawa, M. et al., 1995. Olefin polymerization catalyzed by homo-or hetero-bimetallic zirconocene complexe/Methyl aluminoxane system.Polym. Bull., 35:677-682.

[7] Pan Zhido, Sun Junquan, Yang S. L., 2000. Polymerization of methyl methacrylate with iron-ytterbium dinuclear metallocene catalyst. J. Zhejiang Univ., (Science,Eng. Ed.), 1(1):20-26.

[8] Reddy, K. P., Peterson,J. L., 1989. Synthesis and characterization of binuclear zirconocenecomplexes linked by a bridged bis (cyclopontadienyl) ligand. Organometallics, 8:2107-2113.

[9] Sun Junquan, Pan Zhida, 1997. Polymerization of methyl methacrylate by novel catalyst Ln (acac) 3-n-BuMgC1. Chinese J. of Applied Chem., 14(2):1-4.

[10] Sun Jumquan, Pan Zhida, Zhong Yu et al., 2000. Polymerization of methyl methacrylatecatalyzed by single-component lanthanocene. Euro. Polym. J., 36(11):2375-2381.

[11] Sun Junquan, Pan Zhida, Hu Weiqiu, 2000. Polymerization of methyl methacrylate withethylene bridged heterodinuclear metallocene of samarium and titanium, submitted to Euro. Polym. J.,

[12] Werner, H., Schneider, D., Schulz, M., 1992. Bis(cyclopentadienyl) methane-bridged binuclear complexes V. Heterodinuclear cobalt/rhodium, cobalt/iridium, rhodium/iridium, and titanium/iridium complexes with the bis (cyclopontadienyl)methane dianion as bridging ligand. Chem. Ber., 125:1017-1026.

[13] Zhang Yifeng, Su Qi, Zhang Qin et al., 1994. The kinetics and mechanism of polymerization of methyl methacrylate and butyl methacrylate by coordination of neodymium compound. Polym. Sci., 6:653-657.

[14] Zheng Changren, 1986. Molecular Weight and Molecular Weight Distribution of Polymers, Chem. Ind. Press, Beijing, p.640.

[15] Zheng Peiyao, Nadasdi, T. T., Stephan, D. W., 1989. Monophosphido-bridged early/late heterobimetallic complexes. Organometallics, 8(6):1393-1398.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE