化工进展2017，Vol.36Issue(6)：2262-2269,8.DOI:10.16085/j.issn.1000-6613.2017.06.042
咖啡壳纤维素提取工艺的优化及其微观结构
Optimization of extracting technology for coffee cellulose and characterization of its microstructure
王宇 1李如燕 2李根 1张松2
作者信息
- 1. 昆明理工大学材料科学与工程学院,云南昆明 650093
- 2. 固体废弃物资源化国家工程研究中心,云南昆明 650093
- 折叠
摘要
Abstract
As a new recycling material,the coffee shell was used as a raw material to extract the cellulose by adopting the chemical separation techniques. Single factor experiment and orthogonal experiment were conducted to find the optimal process condition of the extracting process. The results showed that the optimal conditions of cellulose extraction were as follows:NaOH mass fraction 4%, H2O2mass fraction 10%,and reacting at 45℃ for 35min. The optimal mass fraction(83.88%)of the coffee shell cellulose was obtained under these conditions. The extracted samples' composition, micro-surface structure,phase structure and absorbency were tested by FTIR,SEM,XRD and absorbent liquid experiment. The results showed that the extracted samples were mainly cellulose and had spiral tube structure. Its specific surface area increased significantly and the crystal type,natural cellulose I,did not change. At room temperature,the absorption rate(65g/g)coffee shell cellulose was largest with the tap water,and the absorption rate(58g/g)was lowest with 0.9% NaCl solution,which was stillhigher than natural cotton cellulose(40g/g).关键词
咖啡壳/纤维素/提取/吸液性能Key words
coffee shell/cellulose/extraction/absorbent property分类
化学化工引用本文复制引用
王宇,李如燕,李根,张松..咖啡壳纤维素提取工艺的优化及其微观结构[J].化工进展,2017,36(6):2262-2269,8.
