木质纤维素泡沫的制备及其力学性能
Preparation of Lignocellulosic Foam and Investigation of Its Mechanical Properties
段雨龙 1暨文浩 1付时雨 1刘德桃1
作者信息
- 1. 华南理工大学 轻工科学与工程学院 制浆造纸工程国家重点实验室,广东 广州,510640
- 折叠
摘要
通过采用DMAc/LiCl溶解法制备一定质量浓度的纤维素溶液,研究了纤维素溶解-再生过程中的氢键重建胶粘策略,将木质纤维素(桉木)颗粒高效绿色粘接构筑高强度木质纤维素泡沫材料.研究结果表明:增加纤维素溶液会提升材料机械强度,优选纤维素质量浓度6%,桉木颗粒质量与纤维素溶液体积比为0.50 g/mL,可获得较佳的压缩强度(23.50 MPa)和杨氏模量(11.45 MPa)、拉伸强度为 0.87 MPa和高的孔隙率(65.56%).
Abstract
The cellulose solution was prepared at a specific mass concentration using the DMAc/LiCl dissolution method.The study investigated the strategy of hydrogen bond reconstruction during the cellulose dissolution-regeneration process.High-strength lignocellulosic foam materials were constructed through efficient and green adhesion of wood cellulose particles(eucalyptus).The results indicate that increasing the cellulose solution concentration enhances the mechanical strength of the material.An optimal cellulose mass concentration of 6%,with a eucalyptus particle mass to cellulose solution volume ratio of 0.50 g/mL,yielded superior compressive strength(23.50 MPa)and Young's modulus(11.45 MPa),tensile strength of 0.87 MPa and high porosity(65.56%).
关键词
木质纤维素/泡沫/溶解-再生/力学性能Key words
lignocellulosic/foam/solution-regeneration/mechanical property引用本文复制引用
基金项目
广东省自然科学基金项目(2024A1515011166)
广东省自然科学基金项目(2022A1515010910)
出版年
2024
NETL
NSTL
万方数据