Miscibility of blends of Aeromonas gum or Erwinia gum with other polysaccharides

被引：0

作者：

Yang, G

Zhang, LN ^{[1
]}

Feng, WF

Iijima, H

Tsuchiya, H

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

[2] Asahi Chem Ind Co Ltd, Chem Technol Dept 4, Miyazaki 8820847, Japan

[3] Asahi Chem Ind Co Ltd, Specialty Chem Dept 4, Tokyo 1008840, Japan

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1999年 / 73卷 / 08期

关键词：

miscibility; viscometry; Aeromonas gum; Erwinia gum; scanning electron microscopy; IR;

D O I：

10.1002/(SICI)1097-4628(19990822)73:8<1387::AID-APP5>3.0.CO;2-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Aeromonas (A) gum and Erwinia (E) gum are acidic heteropolysaccharides, which exist in water as expanded chains caused by the electrostatic repulsion between the charged groups. A modified approach, which was suggested to estimate miscibility of stiff polymer in our previous study, was used to determine miscibility parameter mu for blends between A gum or E gum with other polysaccharides, by using viscometry in aqueous 0.1M NaCl solution. When weight ratios of E gum/pectin were in the range of 3:7 similar to 7:3, the blends in aqueous solution are miscible. The blends of A. gum/xanthan, A gum/pectin, and E gum/xanthan in aqueous solution are obviously immiscible. When the weight fraction (w(2)) of A gum or E gum in the mixture solution is 0.7, the mu predicts that the miscibility of blend films was on the order of E gum/pectin > E gum/xanthan > A gum/pectin > A gum/xanthan. These results are in good agreement with those observed by scanning electron microscopy and Fourier transform IR. (C) 1999 John Wiley & Sons, Inc.

引用

页码：1387 / 1395

页数：9