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Ampelodesmos mauritanicus，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。目前的工作涉及湿热表征和处理对其行为的影响。因此，未经处理和经过化学处理（碱、硅烷和乙酸）和热处理的 Diss 纤维通过浸水的吸收测试和其他通过水蒸气吸附和解吸 (Proumid-SPS) 的测试来表征。发现的结果表明，这些纤维呈现出具有滞后性的 II 型吸附等温线，其中它们的饱和点可以达到其干质量的 40%。然而，所进行的处理似乎能够降低它们的亲水性，尤其是在加热、硅烷和乙酸处理之后。另一方面，吸附动力学，