文献类型：期刊文献

英文题名：Preparation of a Rough Hydrophobic Surface on Jute Fibers via Silica Hydrosol Modification and Properties of Fiber-reinforced Polylactic Acid Composites

作者：Wang, Weiming[1,2];Dong, Aixue[1,2];Wen, Zuoqiang[1]

机构：[1]Shaoxing Univ, Coll Text & Garment, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Key Lab Clean Dyeing & Finishing Technol, Shaoxing 312000, Zhejiang, Peoples R China

年份：2020

卷号：15

期号：1

起止页码：290

外文期刊名：BIORESOURCES

收录：SCI-EXPANDED(收录号：WOS:000511129100024)、、WOS

基金：This work was financially supported by National Science & Technology Innovation Plan Project for College Student, China (Granted No. 201710349010), and the Science Technology Department of Zhejiang Provincial, China (Grant No. LGG18E030005).

语种：英文

外文关键词：SiO2 hydrosol; Jute/PLA composite; Tensile strength; interfacial structure

外文摘要：Scoured jute fiber was modified with silica hydrosol and then mixed with polylactic acid to form bio-based fiber-reinforced composites. The effects of modification methods on the morphology and hydrophobicity of the fibers, as well as the tensile strength and fracture structure of the composites were studied. Also, the influence of sodium hydroxide concentration, MTMOS concentration, and numbers of dipping steps on the tensile strength of the composites were examined. The results indicated that silica hydrosol condensation could be used to prepare a smooth hydrophobic surface on modified fibers, while a rough hydrophobic surface could be prepared when alkaline treatment was carried out onto the surface of incompletely condensed silica hydrosol film. Rough hydrophilic fibers revealed poor interfacial compatibility and adhesion strength. Smooth hydrophobic surfaces improved interfacial compatibility and dispersibility of the fibers in hydrophobic matrix, whereas a rough hydrophobic structure further improved the adhesion strength through mechanical interlock. The data illustrated that morphology of the silica hydrosol modified fiber surface depended on the alkaline treatment conditions and amounts of adsorbed silica hydrosol, while the effect of MTMOS precursor concentration was negligible.