在食品、日化、药用辅料与各类水基体系中,经常会看到一个看似“朴素”的名字:CMC。它既不是小分子助剂,也不是天然胶的简单混合物,而是一类经过化学改性的纤维素高分子:把天然纤维素上部分羟基(–OH)换成带电的羧甲基(–O–CH₂–COO⁻)并以钠盐形式存在,从而让原本难溶的纤维素变成可在水中形成黏稠胶体溶液的阴离子型高分子电解质。在国际食品添加剂体系中它也常被称为 cellulose gum / Na CMC,对应 INS 466(E ...
In foods, personal care, pharmaceutical excipients, and many other water-based systems, you often see a seemingly “plain” name: CMC.CMC is neither a small-molecule additive nor a simple blend of natural gums. It is a class of chemically modified cellulose polymers: some hydroxyl groups (–OH) on ...