商用低酰基结冷胶的分馏和表征

Q3 Materials Science

Macromolecular Symposia Pub Date : 2024-08-16 DOI:10.1002/masy.202400001

Gulnur S. Tatykhanova, Sami-Pekka Hirvonen, Yuliia V. Bardadym, Nargiz N. Gizatullina, Moldir A. Saulimbay

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引用次数: 0

摘要

商用低酰基结冷胶（LAG）是通过分馏溶解法提纯的。由于高摩尔质量和葡萄糖醛酸片段中的羧基，纯化的商用 LAG 水溶液具有聚电解质特性。经验 Fuoss 方程确定了纯化 LAG 在无盐水中的固有粘度。商用 LAG 通过超声波处理进行分馏。通过 1H NMR 和傅立叶变换红外光谱对 LAG 馏分进行表征。在 0.025 m 的四甲基氯化铵（TMACl）中测量了经超声处理的 LAG 样品的固有粘度。LAG 馏分的分子量由 Mark-Kuhn-Houwink 公式测定。

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Fractionation and Characterization of Commercial Low Acyl Gellan Gum

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Fractionation and Characterization of Commercial Low Acyl Gellan Gum

Commercial low acyl gellan (LAG) is purified by the fractional dissolution method. An aqueous solution of purified commercial LAG exhibits polyelectrolyte character due to its high molar mass and carboxylic groups in glucuronic acid fragments. The empirical Fuoss equation determines the intrinsic viscosity of purified LAG in salt-less water. Fractionation of commercial LAG is carried out by ultrasound treatment. LAG fractions are characterized by ¹H NMR and FTIR spectroscopy. The intrinsic viscosities of ultrasonically treated LAG samples are measured in 0.025 m of tetramethylammonium chloride (TMACl). The molecular weights of LAG fractions are determined by the Mark–Kuhn–Houwink equation.

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来源期刊

Macromolecular Symposia Materials Science-Polymers and Plastics

CiteScore

1.50

自引率

0.00%

发文量

226

期刊介绍： Macromolecular Symposia presents state-of-the-art research articles in the field of macromolecular chemistry and physics. All submitted contributions are peer-reviewed to ensure a high quality of published manuscripts. Accepted articles will be typeset and published as a hardcover edition together with online publication at Wiley InterScience, thereby guaranteeing an immediate international dissemination.