Obtaining Dialdehyde Carboxymethylcellulose Through Microwave Treatment

IF 2 4区工程技术 Q3 ENGINEERING, CHEMICAL

Advances in Polymer Technology Pub Date : 2025-02-19 DOI:10.1155/adv/9917563

I. Sh. Goyibnazarov, Sh. A. Yuldoshov, A. A. Sarymsakov, Kh. E. Yunusov, S. S. Yarmatov, A. I. Shukurov, M. S. Bobomurodova, Yi Wan

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Abstract

In this study, we investigated the process of obtaining dialdehyde carboxymethylcellulose (DCMC) with a high molecular mass and aldehyde content (AC) through periodate oxidation under microwave irradiation. We examined the effects of periodate oxidation time, sodium periodate (NaIO₄) concentration, and pH value of the solution under microwave treatment on the molecular mass, aldehyde group content, and yield of DCMC. Optimal conditions for the periodate oxidation reaction under microwave irradiation (microwave power level set at 10% or 70 W) were identified as follows: a reaction time of 10 min, oxidant concentration of 2.5% (with a molar ratio of carboxymethylcellulose to NaIO₄ of 1:1), and pH of 3.5. Under these conditions, the oxidation degree of DCMC obtained by microwave treatment was 82%, with a molecular mass of 141 kDa, a polydispersity of 1.4%, and a product yield of 70%. The obtained samples were analyzed using a variety of methods including chemical analysis, FTIR spectroscopy, thermogravimetric analysis, atomic force microscope (AFM), and nuclear magnetic resonance (NMR) spectroscopy.

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微波法制备双醛羧甲基纤维素

本研究研究了微波辐照下高碘酸盐氧化法制备高分子量、高醛含量双醛羧甲基纤维素（DCMC）的工艺。研究了微波处理溶液中高碘酸盐氧化时间、高碘酸钠（NaIO4）浓度和pH值对DCMC分子质量、醛基含量和产率的影响。确定微波辐照下高碘酸盐氧化反应的最佳条件（微波功率为10%或70 W）为：反应时间10 min，氧化剂浓度2.5%（羧甲基纤维素与NaIO4的摩尔比为1:1），pH为3.5。在此条件下，微波处理得到的DCMC氧化度为82%，分子量为141 kDa，多分散性为1.4%，产物收率为70%。利用化学分析、FTIR光谱、热重分析、原子力显微镜（AFM）和核磁共振（NMR）光谱等多种方法对所得样品进行分析。

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来源期刊

Advances in Polymer Technology 工程技术-高分子科学

CiteScore

5.50

自引率

0.00%

发文量

审稿时长

9 months

期刊介绍： Advances in Polymer Technology publishes articles reporting important developments in polymeric materials, their manufacture and processing, and polymer product design, as well as those considering the economic and environmental impacts of polymer technology. The journal primarily caters to researchers, technologists, engineers, consultants, and production personnel.