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Determination of the substitution pattern in the polymer chain of cellulose sulfates

机译:硫酸纤维素聚合物链中取代模式的确定

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The distribution of substituents in cellulose sulfates has been determined on different structural levels. Based on the determination of the monomer composition, a method has been developed to describe the sulfate pattern in the polymer chain. This approach comprises permethylation, desulfation, deuteromethylation, random cleavage, remethylation, fast-atom bombardment mass spectrum (FABMS) analysis and comparison of the experimental data with those calculated for a random sulfation pattern. Results are discussed with respect to the conditions of the sulfation reactions. In addition, the amount of glucose that could be hydrolyzed from the cellulose sulfates by enzymic digestion was determined. Results of both the random and the selective approach were in good agreement. (C) 1998 Elsevier Science Ltd. All rights reserved. [References: 31]
机译:已经在不同的结构水平上确定了取代基在硫酸纤维素中的分布。基于单体组成的确定,已经开发出一种方法来描述聚合物链中的硫酸盐模式。该方法包括全甲基化,脱硫,氘代甲基化,随机裂解,再甲基化,快速原子轰击质谱(FABMS)分析,以及将实验数据与为随机硫酸化模式计算的数据进行比较。关于硫酸化反应的条件讨论了结果。另外,确定了可以通过酶消化从纤维素硫酸盐中水解的葡萄糖的量。随机方法和选择性方法的结果均吻合良好。 (C)1998 Elsevier ScienceLtd。保留所有权利。 [参考:31]

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