Preparation, Characterization of Carboxyl Polyaldehyde Sugars and Application as Innovative Anti-crease Finishing Agents for Cotton Fabric

ABSTRACT

We have designed and prepared four new cellulose cross-linking agents using NaClO/NaBr/TEMPO and sodium periodate selective catalytic oxidation systems. First, the primary hydroxyl group of sucrose, trehalose, maltose, or lactose was carboxylated through NaClO/NaBr/TEMPO system, and then sodium periodate was used to selectively oxidize the carboxyl compound to obtain carboxyl polyaldehyde sugars. They contained multiple aldehyde groups and carboxyl groups in the molecule, had high reactivity, and can be covalently cross-linked with cellulose. To evaluate crosslinking ability, carboxyl polyaldehyde sugars were applied to the anti-crease finishing of cotton fabrics. The treated cotton fabric had superior anti-crease and hydrophilicity properties, and the crease recovery angle reached more than 260°, wetting time was less than 5 s. Possible crosslinking mechanisms of etherification and esterification under different catalysts and curing temperatures have been studied.

摘要

采用NaClO/NaBr/TEMPO和高碘酸钠选择性催化氧化体系, 设计并制备了四种新型纤维素交联剂. 首先, 通过NaClO/NaBr/TEMPO体系对蔗糖、海藻糖、麦芽糖或乳糖的初级羟基进行羧化, 然后使用高碘酸钠选择性氧化羧基化合物以获得羧基聚醛糖. 它们在分子中含有多个醛基和羧基, 具有较高的反应活性, 可以与纤维素共价交联. 为了评价交联能力, 将羧基聚甲醛糖应用于棉织物的抗皱整理. 整理后的棉织物具有良好的抗皱性和亲水性, 折皱回复角大于260°, 润湿时间小于5s. 研究了不同催化剂和固化温度下醚化和酯化反应的可能交联机理.

KEYWORDS:

• Oxidation
• carboxyl polyaldehyde sugars
• crosslinking agents
• anti-crease property
• Raman
• surfaces

关键词:

• 氧化
• 羧基多醛糖
• 交联剂
• 抗皱性能
• 拉曼光谱
• 表面

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary material

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Additional information

Funding

This work was financially supported by the National Key Research and Development Program of China (2017YFB0309202), Postgraduate Research & Practice Innovation Program of Jiangsu Provence (1062050205198056).