The Cationic Ring-Opening Polymerization of Tetrahydrofuran with 12-Tungstophosphoric Acid

被引：34
|
作者：
Aouissi, Ahmed [1 ]
Al-Deyab, Salem S. [1 ]
Al-Shahri, Hassan [1 ]
机构：
[1] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia
来源：
MOLECULES | 2010年 / 15卷 / 03期
关键词：
cationic polymerization; cyclic ethers; heteropolyacid; tetrahydrofuran; Ring-opening; HETEROPOLY; CATALYSIS; BEHAVIOR;
D O I：
10.3390/molecules15031398
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The cationic ring-opening polymerization reaction of tetrahydrofuran at 20 degrees C was catalyzed by H3PW12O40.13H(2)O as solid acid catalyst. The effect of the proportions of acetic anhydride and catalyst, reaction time and support on the polymerization reaction was investigated. It has been found that the yield and the viscosity of the polymer depend on the proportion of acetic anhydride, the presence of the latter in the reactant mixture being required for the ring-opening. The catalytic activity of the alumina-supported heteropolyacid results showed that Bronsted acid sites are more effective than Lewis ones for the cationic ring-opening polymerization.
引用
收藏
页码：1398 / 1407
页数：10
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