The possibility of living or long-lived cationic polymerization in the butyl vinyl ether iodine liquid sulfur dioxide system

被引：1

作者：

Oliveira, MG ^{[1
]}

Moreira, ACF ^{[1
]}

Brandao, GT ^{[1
]}

Gomes, AS ^{[1
]}

Soares, BG ^{[1
]}

机构：

[1] UNIV FED RIO DE JANEIRO,INST MACROMOL,BR-21945 RIO JANEIRO,RJ,BRAZIL

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1997年 / 198卷 / 06期

关键词：

D O I：

10.1002/macp.1997.021980621

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The polymerization of butyl vinyl ether (nBuVE) initiated by iodine in the presence of liquid sulfur dioxide has been investigated. The number-average molecular weight increased with monomer concentration and after the addition of a fresh feed of the monomer at the end of the first polymerization step. This behavior has been observed in media of different polarity, that is, SO2/toluene = 80:10 or 50:40 v/v and SO2/CH2Cl2 = 20:70 v/v. H-1 NMR spectroscopy revealed the presence of aldehyde terminal group derived from acetal end group, indicating the presence of living or long-lived propagating species. The average number of polymer chains carrying aldehyde end groups is higher than the initial iodine concentration, suggesting that an additional initiation process by hydrogen iodide is taking place.

引用

页码：1933 / 1942

页数：10

共 19 条

[1] THE KINETICS OF IONIC POLYMERISATIONS .4. THE ACTION OF IODINE CHLORIDE AND IODINE BROMIDE ON NORMAL-BUTYL VINYL EHTER [J].

ELEY, DD ;

SAUNDERS, J .

JOURNAL OF THE CHEMICAL SOCIETY, 1954, (JUN) :1668-1672

[2] THE KINETICS OF IONIC POLYMERISATIONS .3. THE SIDE-CHAIN EFFECT IN THE VINYL ETHERS [J].

ELEY, DD ;

SAUNDERS, J .

JOURNAL OF THE CHEMICAL SOCIETY, 1952, (NOV) :4167-4173

[3] KINETICS OF IONIC POLYMERISATION .13. AN INFRARED STUDY OF IODINE-CATALYSED POLYMERISATION OF N-BUTYL VINYL ETHER [J].

ELEY, DD ;

ISACK, FL ;

ROCHESTE.CH .

JOURNAL OF THE CHEMICAL SOCIETY A -INORGANIC PHYSICAL THEORETICAL, 1968, (04) :872-&

[4] KINETICS OF IONIC POLYMERISATION .8. ULTRAVIOLET ABSORPTION OF POLYMERISING IODINE-N-BUTYL VINYL ETHER SYSTEM [J].

ELEY, DD ;

SEABROOK.A .

JOURNAL OF THE CHEMICAL SOCIETY, 1964, (JUN) :2226-&

[5]

HIGASHIMURA T, 1984, ADV POLYM SCI, V62, P49

[6]

JOHNSON AF, 1976, J POLYM SCI POLYM S, V56, P211

[7]

KANOH N, 1962, MAKROMOLEKUL CHEM, V56, P65

[8] LIVING POLYMERIZATION OF ISOBUTYL VINYL ETHER WITH THE HYDROGEN IODIDE IODINE INITIATING SYSTEM [J].

MIYAMOTO, M ;

SAWAMOTO, M ;

HIGASHIMURA, T .

MACROMOLECULES, 1984, 17 (03) :265-268

[9] Recent developments in living cationic polymerization [J].

Nuyken, O ;

Kroner, H ;

Riess, G ;

Oh, S ;

Ingrisch, S .

MACROMOLECULAR SYMPOSIA, 1996, 101 :29-42

[10] STUDIES ON THE NATURE OF PROPAGATING SPECIES IN CATIONIC POLYMERIZATION OF ISOBUTYL VINYL ETHER BY IODINE [J].

OHTORI, T ;

HIROKAWA, Y ;

HIGASHIMURA, T .

POLYMER JOURNAL, 1979, 11 (06) :471-476

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