The degradation behaviors of optical cellulose triacetate films in alkali/acid solutions

IF 1.7 4区 工程技术 Q4 POLYMER SCIENCE Journal of Polymer Engineering Pub Date : 2023-06-14 DOI:10.1515/polyeng-2023-0017
Jian’an Wang, Xiushan Fan
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Abstract

Abstract In this research, the degradation behaviors of ramie-based cellulose triacetate (CTA) films in alkali or acid solutions at room temperature were assessed. Moreover, the attenuated total reflection infrared (ATR-IR), physicochemical properties testing, scanning electron microscope (SEM), and thermogravimetric analysis/differential scanning calorimeter (TG/DSC) were employed to evaluate the detailed degradation process of the CTA films, which were treated by alkali or acidic aqueous solutions. The research results demonstrated that the dominant reaction of CTA films in NaOH solution with various concentrations is deacetylation. Intriguingly, the degradation behaviors of CTA films in HCl depend on the concentration of acid. The CTA films were almost immune to HCl with the concentration less than 1 mol L−1. However, films were degraded directly when the concentration of acid was higher than 1 mol L−1. This study provides a theoretical basis and further understanding for the treatment of dumped CTA films at room temperature.
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光学三醋酸纤维素薄膜在碱/酸溶液中的降解行为
摘要本研究评估了室温下苎麻基三乙酸纤维素(CTA)薄膜在碱性或酸性溶液中的降解行为。此外,采用衰减全反射红外光谱(ATR-IR)、理化性能测试、扫描电子显微镜(SEM)和热重分析/差示扫描量热仪(TG/DSC)对碱溶液或酸性水溶液处理的CTA膜的降解过程进行了详细的评价。研究结果表明,在不同浓度的NaOH溶液中,CTA膜的主要反应是脱乙酰。有趣的是,CTA膜在HCl中的降解行为取决于酸的浓度。CTA膜对浓度小于1的HCl几乎免疫 摩尔 L−1。然而,当酸的浓度高于1时,薄膜直接降解 摩尔 该研究为室温下处理倾倒的CTA膜提供了理论基础和进一步的理解。
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来源期刊
Journal of Polymer Engineering
Journal of Polymer Engineering 工程技术-高分子科学
CiteScore
3.20
自引率
5.00%
发文量
95
审稿时长
2.5 months
期刊介绍: Journal of Polymer Engineering publishes reviews, original basic and applied research contributions as well as recent technological developments in polymer engineering. Polymer engineering is a strongly interdisciplinary field and papers published by the journal may span areas such as polymer physics, polymer processing and engineering of polymer-based materials and their applications. The editors and the publisher are committed to high quality standards and rapid handling of the peer review and publication processes.
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