纤维素纤维材料的环保漂白过程,在气相中使用臭氧和过氧化
Anetta Walawska1, Magdalena Olak-Kucharczyk1, Anna Kaczmarek1
1Łukasiewicz Research Network-Łódź Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Łódź, Poland.
Materials (Basel, Switzerland)
|March 28, 2024
概括
这项研究引入了一种环保的气相漂白方法,用于使用过氧化和臭氧的纤维素纤维. 该工艺提供了显著的经济和环境效益,同时具有漂白和消毒效应.
科学领域:
- 织品化学 织品化学
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
背景情况:
- 传统的纤维素纤维漂白通常涉及高温和大量的水消耗.
- 开发可持续和环保的漂白方法对织行业至关重要.
- 现有的方法可能无法提供联合漂白和消毒特性.
研究的目的:
- 为纤维素材料提出和评估一种创新的,环保的气相漂白方法.
- 为了比较气相漂白 (过氧化,臭氧或组合) 与传统水性漂白的效果.
- 评估气相漂白对棉花特性及其生物杀菌功效的影响.
主要方法:
- 用水性过氧化 (标准),蒸发过氧化,臭氧和气态过氧化和臭氧的组合来漂白纤维素材料.
- 气相处理是在低温 (35°C) 的原型装置中进行的.
- 分析的属性包括颜色,白度,聚合度 (DP),机械强度,吸附能力和对*黄金葡萄球菌*和*大肠杆菌*的微生物活性.
主要成果:
- 用蒸发过氧化和臭氧进行气相漂白是非侵入性的,其白度略低于标准浴漂白.
- 单个气相处理显示DP和抗拉强度的降低与水性过氧化相比相当.
- 综合气相处理导致DP和拉伸强度的较大降低.
- 这两种氧化剂都表现出强烈的杀菌作用,同时实现了漂白和消毒.
结论:
- 使用臭氧和过氧化的气相漂白提供了显著的经济和环境优势,由于较低的温度和最小的用水量.
- 该方法适用于半工业应用,提供联合漂白和消毒.
- 这种创新方法为纤维素纤维处理提供了一个可持续的替代方案.
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