PROCEDURE FOR DETERMINATION OF THE MOLECULAR WEIGHT OF CHITOSAN BY VISCOMETRY

IF 0.8 Q4 MATERIALS SCIENCE, BIOMATERIALS

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2018-09-10 DOI:10.15259/PCACD.23.004

Renata Czechowska-Biskup, R. Wach, J. Rosiak, P. Ulański

引用次数: 18

Abstract

The aim of this publication is to facilitate the estimation of chitosan molecular weight (MW) in laboratories with no access to sophisticated analytical instruments, by applying the easily accessible and economical capillary viscometry. The procedure of viscosity-average molecular weight (Mv) determination is described in details. The examples provided encompass testing of the experimental procedure for determination of the Mv of chitosan with a low-molecular weight of 7.7 kDa and 88 kDa, after verification with a high-molecular weight polymer (477 kDa). The experimental work demonstrated the importance of the initial concentration of low-MW chitosan for the accurate determination of intrinsic viscosity and, as a consequence, the viscosity-average molecular weight.

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粘度法测定壳聚糖分子量的方法

本出版物的目的是为了方便估计壳聚糖分子量(MW)在实验室没有访问复杂的分析仪器，通过应用容易获得和经济的毛细管粘度法。详细介绍了粘度-平均分子量(Mv)测定方法。所提供的例子包括测定低分子量(7.7 kDa)和88 kDa的壳聚糖的Mv的实验程序，并与高分子量(477 kDa)的聚合物进行验证。实验证明了低分子量壳聚糖的初始浓度对于准确测定其特性粘度的重要性，从而确定其粘度-平均分子量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress on Chemistry and Application of Chitin and its Derivatives MATERIALS SCIENCE, BIOMATERIALS-

CiteScore

1.10

自引率

16.70%

发文量

期刊介绍： Progress in the Chemistry and Application of Chitin and its Derivatives is an annual journal focused on all aspects of production, modification, enzymology and application of chitin and its many derivatives, including chitosan. The journal publishes full-length papers as well as invited reviews. To be considered, papers must present original research that has not been published or accepted for publication elsewhere. The language of the journal will be English.