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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 191, 2016 - Issue 1
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Original Articles

A convenient method for preparation of hydroxyl silicone oils with ring opening polymerization of octamethylcyclotetrasiloxane (D4)

Xiongfa YangKey Laboratory of Organosilicon Chemistry and Materials Technology of Education Ministry, Hangzhou Normal University, Hangzhou, ChinaCorrespondence[email protected]
,
Zhonghong ChenKey Laboratory of Organosilicon Chemistry and Materials Technology of Education Ministry, Hangzhou Normal University, Hangzhou, China
,
Jia LiuKey Laboratory of Organosilicon Chemistry and Materials Technology of Education Ministry, Hangzhou Normal University, Hangzhou, China
,
Qiong ChenKey Laboratory of Organosilicon Chemistry and Materials Technology of Education Ministry, Hangzhou Normal University, Hangzhou, China
,
Qin LiuTongde Hospital of Zhejiang Province, Hangzhou, China
,
Mengxian LuoKey Laboratory of Organosilicon Chemistry and Materials Technology of Education Ministry, Hangzhou Normal University, Hangzhou, China
&
Guoqiao LaiKey Laboratory of Organosilicon Chemistry and Materials Technology of Education Ministry, Hangzhou Normal University, Hangzhou, China
 show all
Pages 117-122 | Received 18 Sep 2014, Accepted 06 Nov 2014, Published online: 15 Jan 2016
 
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GRAPHICAL ABSTRACT

Abstract

Hydroxyl silicone can be prepared at a mild polymerization temperature with a moderately high yield via ring opening polymerization of D4 catalyzed by rare earth solid super acid SO42−/TiO2/Ln3+. The outstanding advantage of the method was that the viscosities of the products can be conveniently controlled by adjusting polymerization time, temperature, and the amount of water. The products were characterized by size-exclusion chromatography, 1H-nuclear magnetic resonance, and Fourier transform-infrared spectroscopy. A cationic coordination-insertion polymerization mechanism was also proposed.

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