Molecular weight distribution and branched structure of biodegradable aliphatic polyesters determined by sec-MALLS

被引：21

作者：

Yoshikawa, K

Ofuji, N

Imaizumi, M

Moteki, Y

Fujimaki, T

机构：

[1] SHOWA DENKO CO LTD,KAWASAKI PLAST LAB,KAWASAKI KU,KAWASAKI,KANAGAWA 210,JAPAN

[2] SHOWA HIGHPOLYMER CO,BIONOLLE PROJECT,CHIYODA KU,TOKYO 101,JAPAN

来源：

POLYMER | 1996年 / 37卷 / 07期

关键词：

sec-MALLS; aliphatic polyester; long chain branching;

D O I：

10.1016/0032-3861(96)80855-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：

Molecular weight distribution and mean square radius as a function of molecular weight for biodegradable aliphatic polyesters have been measured by multiangle laser light scattering (MALLS) detector for size exclusion chromatography (s.e.c.). The difference of their molecular structures is discussed in relation to the melt elasticity, which contributes to processability for extrusion coating and extrusion foaming. The evaluated values of branching ratio indicate the existence of long chain branched structures.

引用

页码：1281 / 1284

页数：4

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