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CLC number: O632.52
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Received: 1999-04-30
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THE POLYMERIZATION OF METHYL METHACRYLATE WITH A NEW TIN-BRIDGED YTTROCENE/Al(i-Bu)3
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HU Wei-qiu, SUN Jun-quan, PAN Zhi-da, WU Zhao-li, XU Yu-ming. THE POLYMERIZATION OF METHYL METHACRYLATE WITH A NEW TIN-BRIDGED YTTROCENE/Al(i-Bu)3[J]. Journal of Zhejiang University Science A, 2000, 1(2): 157-161.
@article{title="THE POLYMERIZATION OF METHYL METHACRYLATE WITH A NEW TIN-BRIDGED YTTROCENE/Al(i-Bu)3",
author="HU Wei-qiu, SUN Jun-quan, PAN Zhi-da, WU Zhao-li, XU Yu-ming",
journal="Journal of Zhejiang University Science A",
volume="1",
number="2",
pages="157-161",
year="2000",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2000.0157"
}
%0 Journal Article
%T THE POLYMERIZATION OF METHYL METHACRYLATE WITH A NEW TIN-BRIDGED YTTROCENE/Al(i-Bu)3
%A HU Wei-qiu
%A SUN Jun-quan
%A PAN Zhi-da
%A WU Zhao-li
%A XU Yu-ming
%J Journal of Zhejiang University SCIENCE A
%V 1
%N 2
%P 157-161
%@ 1869-1951
%D 2000
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2000.0157
TY - JOUR
T1 - THE POLYMERIZATION OF METHYL METHACRYLATE WITH A NEW TIN-BRIDGED YTTROCENE/Al(i-Bu)3
A1 - HU Wei-qiu
A1 - SUN Jun-quan
A1 - PAN Zhi-da
A1 - WU Zhao-li
A1 - XU Yu-ming
J0 - Journal of Zhejiang University Science A
VL - 1
IS - 2
SP - 157
EP - 161
%@ 1869-1951
Y1 - 2000
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2000.0157
Abstract: A new catalyst composed of Tin-bridged yttrocene Ph2Sn(MeCp)2YCl (MeCp=methylcyclopentadienyl) and Al(i-Bu)3 was successfully developed for the polymerization of methyl methacrylate(MMA). Detailed study of factors (such as the molar ratio of Al/Cat., catalyst concentration, various solvents, temperature and time) influencing polymerization reaction indicated that the catalytic active species may be still somewhat stable at high temperature and still have a long catalytic lifetime. 1H NMR spectrum showed about 65% syndiotactic content in the polymethyl methacrylate(PMMA) prepared. From kinetic studies, the polymerization rate equation may be expressed as Rp=Kp[Cat.]2.4. The overall activation energy of polymerization is 20.9±3.1 kJ/mol.
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