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使用热水处理从聚/棉混合织物中分离材料

Mei Matsumura¹, Jun Inagaki², Ryo Yamada³

¹Tsuruga Films Technology Center, Toyobo Co., Ltd., 10-24 Toyo-cho, Tsuruga, Fukui 914-8550, Japan.

|March 25, 2024

概括

这项研究引入了一种基于水的热水处理,以分离棉花和聚织品混合物. 这种环保方法有效地分离材料,以改善织品回收和可持续产业.

科学领域:

材料科学材料科学材料科学
可持续化学可持续化学
织工程织工程织工程

背景情况:

织废物是一个日益严重的环境问题,由于材料混合,回收率较低.
目前的回收方法与混合纤维织品作斗争,阻碍了可持续的做法.
一种新的分离技术对于推动织品回收利用至关重要.

研究的目的:

开发一种环保的方法来分离常见的织品混合物,特别是棉花/聚.
优化水热处理条件,以实现高效的材料分离.
评估分离材料的质量,了解分离动力学.

主要方法:

在高压反应堆中,仅使用水进行热水处理.
优化混合面料的温度 (220-230°C) 和时间 (10分钟).
评估分离的棉花强度和聚分子量,包括动力分析.

主要成果:

棉花成功地从聚混合物中分离出来,同时保持了织物的完整性.
聚是通过融分离出来的,避免分解成单体,与化学回收不同.
动力分析表明,比棉花强度降解更有可能减少PET的分子量.

结论:

热水处理为棉花和聚织品的分离提供了一个可行的,环保的方法.
该方法促进了材料回收,支持织行业的循环经济.
进一步的研究可以优化在织废物管理中更广泛应用的条件.

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