Effect of reaction temperature on degree of branching in cationic polymerization of 3-ethyl-3-(hydroxymethyl)oxetane

被引：64

作者：

Mai, YY ^{[1
]}

Zhou, YF ^{[1
]}

Yan, DY ^{[1
]}

Lu, HW ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Coll Chem & Chem Engn, Shanghai 200240, Peoples R China

来源：

MACROMOLECULES | 2003年 / 36卷 / 25期

关键词：

D O I：

10.1021/ma035275o

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

PEHO samples with various DBs were obtained in the cationic polymerization of EHO at -50 to +30°C. It was found that the DB determined by 13C NMR increases with increasing reaction temperature. Only a little change in DB was observed when the reaction temperature is higher than 20°C.

引用

页码：9667 / 9669

页数：3

共 13 条

[1] Multihydroxyl branched polyethers. 2. Mechanistic aspects of cationic polymerization of 3-ethyl-3-(hydroxymethyl)oxetane [J].

Bednarek, M ;

Kubisa, P ;

Penczek, S .

MACROMOLECULES, 2001, 34 (15) :5112-5119

[2]

Bednarek M, 2002, MACROMOL SYMP, V177, P155, DOI 10.1002/1521-3900(200201)177:1<155::AID-MASY155>3.0.CO

[3]

2-S

[4]

Bednarek M, 1999, MACROMOL RAPID COMM, V20, P369, DOI 10.1002/(SICI)1521-3927(19990701)20:7<369::AID-MARC369>3.0.CO

[5]

2-S

[6]

CHERADAME H, 1970, B SOC CHIM FR, P843

[7] The effect of degree of branching on the rheological and thermal properties of hyperbranched aliphatic polyethers [J].

Magnusson, H ;

Malmström, E ;

Hult, A ;

Johansson, M .

POLYMER, 2002, 43 (02) :301-306

[8] Influence of reaction conditions on degree of branching in hyperbranched aliphatic polyethers from 3-ethyl-3-(hydroxymethyl)oxetane [J].

Magnusson, H ;

Malmström, E ;

Hult, A .

MACROMOLECULES, 2001, 34 (17) :5786-5791

[9]

Magnusson H, 1999, MACROMOL RAPID COMM, V20, P453, DOI 10.1002/(SICI)1521-3927(19990801)20:8<453::AID-MARC453>3.0.CO

[10]

2-B

← 1 2 →