现代纺织技术2025，Vol.33Issue(3)：1-7,7.DOI:10.19398/j.att.202406024
气凝胶芳香微胶囊/PVA共混纤维的制备及缓释性能
Preparation of SiO2 aerogel aromatic microcapsules/PVA blend fibers and their slow-release properties
摘要
Abstract
The aerogel particle is a kind of ultra-light material with a three-dimensional porous network structure and a high porosity within.The porous structure and excellent mechanical stability of aerogel make it an ideal carrier for essence,phase change materials and even drugs,and an ideal material for preparing slow-release microcapsules.To explore the application of aerogel particles in the preparation of aromatic fibers,the SiO2 aerogel microcapsules loaded with essence were mixed into polyvinyl alcohol(PVA)spinning solution,and PVA aromatic fibers were prepared by wet spinning process.The effect of the addition amount of aromatic microcapsule on the viscosity and dispersion of the spinning solution,morphology,basic properties,and slow-release performance of the aromatic fibers were studied. It was found that with the increase of the amount of SiO2 aerogel aromatic microcapsules,the viscosity of PVA spinning solution gradually increased,and the microcapsules gradually clustered in the spinning solution.When the addition amount was higher than 7%,the aromatic microcapsules exhibited obvious agglomeration phenomenon in the spinning solution,making the spinning process more difficult.Aromatic fibers were prepared from PVA spinning solution containing 4%of SiO2 aerogel aromatic microcapsules,and the longitudinal morphology of the obtained fibers was basically the same as that of pure PVA fibers.The aerogel aromatic microcapsules were embedded in the fibers and well dispersed.SiO2 aerogel aromatic microcapsules and the prepared aromatic fibers have excellent slow-release properties.After being placed at room temperature for 60 days,their essence release rates were only 22.2%and 13.4%,and their fragrance retention performance was significantly better than that of aromatic microcapsules and aromatic fabrics prepared by conventional polymer embedding method,such as polymethyl methacrylate,melamine/formaldehyde resin and polyurethane.The thermal properties and tensile mechanical properties of PVA fibers decreased significantly after the addition of SiO2 aerogel aromatic microcapsules.This probably resulted from the increase of void space in the fibers caused by aromatic microcapsules;aromatic microcapsules also interfered with orientation arrangement and crystallization formation of PVA fibers,causing a disordered aggregation structure of in the blend fibers. This study is of great significance for the application of aerogel particles in the preparation of slow-release functional microcapsules and their functional fibers.关键词
SiO2气凝胶/芳香微胶囊/芳香纤维/缓释性能/湿法纺丝/PVAKey words
SiO2 aerogel/aromatic microcapsules/aromatic fiber/slow-release property/wet spinning/PVA分类
轻工业引用本文复制引用
宋沛举,唐俊松,高国洪,马明波,周文龙..气凝胶芳香微胶囊/PVA共混纤维的制备及缓释性能[J].现代纺织技术,2025,33(3):1-7,7.基金项目
浙江理工大学基本科研业务费项目(2020Q001) （2020Q001）
