Photocatalyzed degradation of polymers in aqueous semiconductor suspensions.: 3.: Photooxidation of a solid polymer:: TiO2-blended poly(vinyl chloride) film

被引：96

作者：

Horikoshi, S

Serpone, N

Hisamatsu, Y

Hidaka, H

机构：

[1] Iwaki Meisei Univ, Frontier Res Ctr Global Environm Protect, Hino, Tokyo 1918506, Japan

[2] Iwaki Meisei Univ, Dept Chem, Hino, Tokyo 1918506, Japan

[3] Concordia Univ, Dept Chem & Biochem, Montreal, PQ H3G 1M8, Canada

[4] Natl Inst Publ Hlth, Minato Ku, Tokyo 1080071, Japan

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1998年 / 32卷 / 24期

关键词：

D O I：

10.1021/es9710464

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photooxidative degradation of a TiO2-blended poly(vinyl chloride) (PVC) film and other PVC specimens was carried out under UV light and under solar exposure to test the feasibility that such polymeric materials can be mineralized. The effects of the degree of polymerization and the presence of a plasticizer (o-dioctyl phthalate; DOP) in the PVC on the photooxidation process were examined by scanning electron microscopy (SEM), by X-ray photoelectron spectroscopy (XPS), by gel permeation chromatography, and by gas chromatography for CO;, evolution. The TiO2-blended PVC thin film is more easily decomposed than PVC particles (or film) alone in a TiO2 particulate dispersion. The collapse phenomena of polymeric films are closely dependent on the photodegradation rate of DOP in the PVC film. Ames mutagenic assays for the photodegraded solution in aqueous TiO2/PVC dispersions showed a slight mutagenic activity in TA98 without S9 mix for products formed during the photodegradative oxidation.

引用

页码：4010 / 4016

页数：7

共 8 条

[1] PHOTOOXIDATION OF COMMERCIAL POLYETHYLENE CONTAINING TITANIUM-DIOXIDE (RUTILE) - ANTIOXIDANT SYSTEMS
ALLEN, NS
BULLEN, DJ
MCKELLAR, JF
[J]. JOURNAL OF MATERIALS SCIENCE, 1977, 12 (07) : 1320 - 1324
[2] METHODS FOR DETECTING CARCINOGENS AND MUTAGENS WITH SALMONELLA-MAMMALIAN-MICROSOME MUTAGENICITY TEST
AMES, BN
MCCANN, J
YAMASAKI, E
[J]. MUTATION RESEARCH, 1975, 31 (06): : 347 - 363
[3] Hidaka H, 1996, J POLYM SCI POL CHEM, V34, P1311, DOI 10.1002/(SICI)1099-0518(199605)34:7<1311::AID-POLA18>3.0.CO
[4] 2-C
[5] Horikoshi S, 1997, RRD POLYM SCI, V1, P149
[6] Horikoshi S., 1998, J JPN SOC COLOUR MAT, V71, P176
[7] PHOTOCATALYTIC DEGRADATION OF POLYETHYLENE FILM BY INCORPORATED EXTRA-FINE PARTICLES OF TITANIUM-DIOXIDE
OHTANI, B
ADZUMA, S
NISHIMOTO, S
KAGIYA, T
[J]. POLYMER DEGRADATION AND STABILITY, 1992, 35 (01) : 53 - 60
[8] MUTAGENICITIES OF N-NITROSAMINES ON SALMONELLA
YAHAGI, T
NAGAO, M
SEINO, Y
MATSUSHIMA, T
SUGIMURA, T
OKADA, M
[J]. MUTATION RESEARCH, 1977, 48 (02): : 121 - 129

← 1 →