羊毛与选定的单官能和双官能试剂反应的比较。

Comparison of wool reactions with selected mono and bifunctional reagents.

作者信息

Koenig N H, Friedman M

出版信息

Adv Exp Med Biol. 1977;86A:355-82. doi: 10.1007/978-1-4684-3282-4_22.

Abstract

The molecular structure of wool is discussed in relation to chemical reactivity and the role of disulfide crosslinks. Ideal characteristics of an effective medium (e.g. dimethylformamide) for modifying wool include the ability to penetrate and swell wool without interfering with reagents used. The extent of reaction of wool or reduced wool is compared for mono-and bifunctional activated vinyl compounds, isocyanates, acid chlorides, acid anhydrides, sulfonyl chlorides, and alkyl halides. The degree of crosslinking is assessed by solubility, supercontraction, and tensile tests. Optical and electron scanning microscopy can give evidence of external polymer deposition in contrast to internal chemical modification. Effects of crosslinking by bifunctional reagents are related to changes in mechanical, chemical, and biological (moth-resisting) properties of the modified wool.

摘要

本文讨论了羊毛的分子结构与化学反应活性以及二硫键交联作用的关系。用于改性羊毛的有效介质（如二甲基甲酰胺）的理想特性包括能够渗透并溶胀羊毛而不干扰所使用的试剂。比较了羊毛或还原羊毛与单官能和双官能活性乙烯基化合物、异氰酸酯、酰氯、酸酐、磺酰氯和卤代烷的反应程度。通过溶解性、超收缩和拉伸试验评估交联程度。光学显微镜和电子扫描显微镜可以提供外部聚合物沉积的证据，这与内部化学改性形成对比。双官能试剂交联对改性羊毛的机械、化学和生物（防虫）性能变化的影响。