The Influence of Chemical and Thermal Treatments on the Diss Fiber Hygroscopic Behaviors

ABSTRACT

Diss fibers, also called Ampelodesmos mauritanicus, are one of the least studied fibers in the literature. Indeed, the rare studies discussed have focused on mechanical and physicochemical properties. The present work deals with hygrothermal characterization and the effect of treatments on their behavior. So, untreated and treated Diss fibers with chemical treatments (alkaline, silane, and acetic acid) and heat treatment were characterized by absorption tests by water immersion and others by water vapor adsorption and desorption (Proumid-SPS). The results found have shown that these fibers presented a type II sorption isotherm with hysteresis where their saturation point could reach up to 40% of their dry mass. However, the treatments carried out seem to be able to reduce their hydrophilic nature especially after heat, silane, and acetic acid treatments. The adsorption kinetics, on the other hand, also seem to be positively influenced by these treatments, especially after the chemical treatments.

摘要

Diss纤维, 也称为毛绒蛇葡萄, 是文献中研究最少的纤维之一. 事实上, 所讨论的罕见研究集中在机械和物理化学性质上. 本工作涉及湿热特性和处理对其行为的影响. 因此, 对未经处理和经化学处理 (碱、硅烷和乙酸) 和热处理的Diss纤维进行了水浸泡吸收试验和水蒸气吸附与解吸 (Proumid-SPS) 测试. 结果表明, 这些纤维呈现出一种具有滞后性的II型吸附等温线, 其饱和点可达其干质量的40%. 然而, 所进行的处理似乎能够降低其亲水性, 特别是在热处理、硅烷处理和乙酸处理之后. 另一方面, 吸附动力学似乎也受到这些处理的积极影响, 特别是在化学处理之后.

KEYWORDS:

• Natural fibers
• Diss fibers
• hygrothermal behavior
• chemical treatments
• heat treatment

关键词:

• 天然纤维
• Diss纤维
• 湿热行为
• 化学处理
• 热处理

Acknowledgments

This research work has been conducted with the financial support of FEDER-Region Pays de la Loire in the framework of CIPTAP R&D project.

Additional information

Funding

This work was supported by the FEDER-Region Pays de la Loire.