Mechanochemical synthesis and characterization of poly(vinyl chloride)-block-poly(vinyl alcohol) copolymers by ultrasonic irradiation

被引：14

作者：

Fujiwara, H ^{[1
]}

Ishida, T ^{[1
]}

Taniguchi, N ^{[1
]}

Wada, S ^{[1
]}

机构：

[1] Osaka Inst Technol, Fac Engn, Dept Appl Chem, Asahi Ku, Osaka 5358585, Japan

来源：

POLYMER BULLETIN | 1999年 / 42卷 / 02期

关键词：

D O I：

10.1007/s002890050453

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Mechanical degradation and mechanochemical reaction in heterogeneous systems of the solid poly(vinyl chloride)-poly(vinyl alcohol) aqueous solutions have been studied by ultrasonic irradiation at 30 degrees C. The rate of decrease in the viscosity-average degree of polymerization of the degraded poly(vinyl chloride) was much faster than that of the degraded poly(vinyl alcohol). Mechanochemical reaction occurred by free radicals produced from the chain scissions of both polymers by ultrasonic waves. The copolymer was obtained and the molar ratio of the vinyl chloride and the vinyl alcohol units in its copolymer can be determined. In addition, the changes in the composition of the total block copolymer, the unreacted poly(vinyl chloride), and the unreacted poly(vinyl alcohol) were obtained.

引用

页码：197 / 204

页数：8

共 6 条

[1] MECHANOCHEMICAL COPOLYMERIZATION OF POLYVINYL-ALCOHOL) AND METHYL-METHACRYLATE BY ULTRASONIC IRRADIATION .7. MECHANOCHEMICAL REACTION OF POLYMERS BY ULTRASONIC IRRADIATION [J].

FUJIWARA, H ;

GOTO, K .

KOBUNSHI RONBUNSHU, 1984, 41 (03) :133-138

[2] MECHANOCHEMICAL BLOCK COPOLYMERIZATION IN HETEROGENEOUS SYSTEMS OF THE SOLID POLY(VINYL CHLORIDE) WITH STYRENE BY ULTRASONIC IRRADIATION .2. EFFECT OF SEVERAL FORMS OF SUSPENSION POLYMERIZED POLY(VINYL CHLORIDE) PARTICLES [J].

FUJIWARA, H ;

KIKYU, T ;

NANBU, H ;

HONDA, T .

POLYMER BULLETIN, 1994, 33 (03) :317-323

[3] MECHANOCHEMICAL BLOCK COPOLYMERIZATION IN HETEROGENEOUS SYSTEMS OF THE SOLID POLY(VINYL CHLORIDE) WITH STYRENE BY ULTRASONIC IRRADIATION [J].

FUJIWARA, H ;

KIMURA, T ;

SEGI, M ;

NAKATUKA, T ;

NAKAMURA, H .

POLYMER BULLETIN, 1992, 28 (02) :189-196

[4]

MITANI K, 1988, POLYVINYL CHLROIDE I, P286

[5]

Nakajima A., 1949, KOBUNSHI KAGAKU, V6, P460

[6]

SAKURADA I, 1944, KOGYO KAGAKU ZASSHI, V47, P133

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