PHOTO-DEGRADATION OF BLENDS OF POLYSTYRENE AND POLY(METHYL METHACRYLATE)

被引：16

作者：

TORIKAI, A

SEKIGAWA, Y

FUEKI, K

机构：

[1] Nagoya Univ, Nagoya, Jpn, Nagoya Univ, Nagoya, Jpn

来源：

POLYMER DEGRADATION AND STABILITY | 1988年 / 21卷 / 01期

关键词：

COPOLYMERS - POLYMETHYL METHACRYLATE - Degradation - SPECTROSCOPY - VISCOSITY - Measurements;

D O I：

10.1016/0141-3910(88)90064-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Studies of the photo-degradation of blends of polystyrene (PSt) and poly(methyl methacrylate) (PMMA) were made using ultraviolet (UV) and Fourier transform infrared (FTIR) spectroscopy and viscosity measurements. Optical density around 300 nm increases with the increase in the proportion of the PMMA component in the blend. A similar trend is also seen in the formation of oxygenated products. The number of chain scissions calculated from viscosity measurements also becomes greater as the PMMA component in the blend is increased. It has been found that the degradation of PSt-PMMA blends takes place in the PMMA. Interaction between PSt and PMMA in the component boundary regions has not been observed.

引用

页码：43 / 54

页数：12

共 10 条

[1]

BUSFIELD WK, 1975, J POLYM SCI PS, V49, P227

[2]

GRASSIE N, 1977, DEV POLYM DEGRADATIO, V1, P173

[3] CHARACTERIZATION OF A DISSOCIATIVE EXCITED-STATE IN THE SOLID-STATE - PHOTOCHEMISTRY OF POLY(METHYL METHACRYLATE) - PHOTOCHEMICAL PROCESSES IN POLYMERIC SYSTEMS .5. [J].