Ozone interaction with conjugated polymers - I. Polyacetylene

被引：29

作者：

Cataldo, F ^{[1
]}

机构：

[1] Progega SNC, I-00133 Rome, Italy

来源：

POLYMER DEGRADATION AND STABILITY | 1998年 / 60卷 / 2-3期

关键词：

D O I：

10.1016/S0141-3910(97)00068-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Free-standing films of cis- and trans-rich polyacetylene (PA) obtained on a Rh(I) catalyst, were treated with ozonized oxygen (O-3 1% by weight on average). The initial superficial charge-transfer complex formed between ozone and the polyene chain and the subsequent ozone accelerated cis-trans isomerization were studied by electronic and FT-IR spectroscopies. A peculiar mechanism of interaction between ozone and polyenic chain was proposed, and cation radicals were observed on the ozone doped surfaces of PA. Ozone treatment of PA films creates a superficial oxidized barrier that prevents subsequent thermo-oxidative destruction of the bulk portion of PA film. This treatment could be a way of protecting PA from degradative oxidation. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：223 / 231

页数：9

共 26 条

[1] THE REACTIONS OF OZONE WITH ORGANIC COMPOUNDS [J].

BAILEY, PS .

CHEMICAL REVIEWS, 1958, 58 (05) :925-1010

[2]

BERNIER P, 1981, CHEM SCRIPTA, V17, P151

[3] On the production of ozone by electrolysis. Electrolysis at low temperature [J].

Briner, E ;

Haefeli, R ;

Paillard, H .

HELVETICA CHIMICA ACTA, 1937, 20 :1510-1523

[4]

BRINER E, 1941, HELV CHIM ACTA, V24, P83

[5] PREPARATION AND STRUCTURE OF CHLORINATED AND BROMINATED DERIVATIVES OF POLYPHENYLACETYLENE [J].

CATALDO, F .

EUROPEAN POLYMER JOURNAL, 1992, 28 (12) :1493-1499

[6] PHOTOCHEMICAL POLYMERIZATION OF ACETYLENE IN WATER SUSPENSION - A STUDY OF THE RESULTING PHOTOPOLYMER IN COMPARISON WITH THERMALLY AGED LINEAR POLYACETYLENE [J].

CATALDO, F .

EUROPEAN POLYMER JOURNAL, 1994, 30 (09) :1007-1011

[7] On the reaction of ozone with beta-carotene, a naturally occurring polyene [J].

Cataldo, F .

POLYMER DEGRADATION AND STABILITY, 1996, 53 (01) :51-56

[8] A SPECTROSCOPIC STUDY OF POLYACETYLENE PREPARED BY USING RH(I) CATALYSTS [J].

CATALDO, F .

POLYMER, 1994, 35 (24) :5235-5240

[9] OZONE REACTION WITH C-60 FULLERENE - A STUDY ON THE ANTIOZONANT ACTIVITY OF C-60 FULLERENE IN DIENIC RUBBER [J].

CATALDO, F ;

ORI, O .

POLYMER DEGRADATION AND STABILITY, 1995, 48 (02) :291-296

[10] A STUDY OF CHLORINATED POLYACETYLENE [J].

CATALDO, F .

EUROPEAN POLYMER JOURNAL, 1993, 29 (12) :1635-1639

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