PHOTODEGRADATION OF POLYETHYLENE - FACTORS AFFECTING PHOTOSTABILITY

被引：65

作者：

TORIKAI, A

SHIRAKAWA, H

NAGAYA, S

FUEKI, K

机构：

[1] Department of Synthetic Chemistry, Faculty of Engineering, Nagoya University, Nagoya, 464-01, Furo‐cho, Chikusa‐ku

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1990年 / 40卷 / 9-10期

关键词：

Oxygenated Product Buildup - Photostability;

D O I：

10.1002/app.1990.070400919

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Four kinds of annealed polyethylene (PE) films with varying densities were photo‐irradiated with a medium pressure mercury lamp. Photodegradation processes were followed by ultraviolet (UV) and Fourier transform infrared (FTIR) spectroscopic techniques and by gel and mechanical property measurements. Oxygenated products build‐up was more favored in linear low density (LLD) PE and the rate of formation increased in the reverse order of polymer density. A similar trend was seen in gel formation. Measurements of elongation at break (%) showed that the embrittlement time of photo‐irradiated PE increased with the decrease of polymer density. The experimental results on unquenched samples were compared with those of quenched samples. It was found that the density (or crystallinity) and crystal size of PE play important roles in determining photostability. Copyright © 1990 John Wiley & Sons, Inc.

引用

页码：1637 / 1646

页数：10

共 13 条

[1]

Garton A., 1980, DEV POLYM PHOTOCHEMI, V1, P93

[2] PHOTOOXIDATIVE DEGRADATION OF POLYETHYLENE - EFFECT OF POLYMER CHARACTERISTICS ON CHEMICAL-CHANGES AND MECHANICAL-PROPERTIES .1. QUENCHED POLYETHYLENE [J].

GEETHA, R ;

TORIKAI, A ;

NAGAYA, S ;

FUEKI, K .

POLYMER DEGRADATION AND STABILITY, 1987, 19 (03) :279-292

[3]

Geetha R., 1988, POLYM DEGRAD STABIL, V23, P91

[4] MATERIAL DESIGN OF RADIATION RESISTANT POLYPROPYLENE .2. IMPORTANCE OF THE SMECTIC STRUCTURE PRODUCED BY QUENCHING TREATMENT [J].

NISHIMOTO, S ;

KAGIYA, T ;

WATANABE, Y ;

KATO, M .

POLYMER DEGRADATION AND STABILITY, 1986, 14 (03) :199-208

[5]

NISHIMOTO S, 1986, 6TH KOB NO REKK TO A, P61

[6]

ROGERS CE, 1986, POLYM PERMEABILITY, P61

[7] MECHANISM OF DECAY OF ALKYL RADICALS IN IRRADIATED POLYETHYLENE ON EXPOSURE TO AIR AS STUDIED BY ELECTRON-SPIN RESONANCE [J].

SEGUCHI, T ;

TAMURA, N .

JOURNAL OF PHYSICAL CHEMISTRY, 1973, 77 (01) :40-44

[8] PHOTOINDUCED REACTIONS OF POLYCARBONATE STUDIED BY ELECTRON-SPIN-RESONANCE, VISCOSITY AND OPTICAL-ABSORPTION MEASUREMENTS [J].

TORIKAI, A ;

MURATA, T ;

FUEKI, K .

POLYMER PHOTOCHEMISTRY, 1984, 4 (04) :255-269

[9] PHOTODEGRADATION OF CROSS-LINKED POLYETHYLENE [J].

TORIKAI, A ;

ASADA, S ;

FUEKI, K .

POLYMER PHOTOCHEMISTRY, 1986, 7 (01) :1-11

[10] RADIATION-INDUCED DEGRADATION OF POLYETHYLENE - ROLE OF AMORPHOUS REGION IN THE FORMATION OF OXYGENATED PRODUCTS AND THE MECHANICAL-PROPERTIES [J].

TORIKAI, A ;

GEETHA, R ;

NAGAYA, S ;

FUEKI, K .

POLYMER DEGRADATION AND STABILITY, 1986, 16 (02) :199-212

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