菠萝叶纤维素均相酯化改性制备甲醛气体净化材料  

Preparation of Formaldehyde Gas Purification Material by Homogeneous Esterification Modification of Pineapple Leaf Cellulose

作　　者：黄杰 崔丽虹[2] 魏晓奕[2] 李积华[2] 张劲 李明福[3] HUANG Jie;CUI Lihong;WEI Xiaoyi;LI Jihua;ZHANG Jin;LI Mingfu(College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China;Agriculture Products Processing Research Instiute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China;Agricultural Machinery Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524091, China)

机构地区：[1]华中农业大学食品科技学院,湖北武汉430070 [2]中国热带农业科学院农产品加工研究所,广东湛江524001 [3]中国热带农业科学院农业机械研究所,广东湛江524091

出　　处：《热带作物学报》2018年第4期768-773,共6页Chinese Journal of Tropical Crops

基　　金：湛江市农业技术攻关专题(No.2017A03016);中国热带农业科学院院本级基本科研业务费专项(No.1630122017018;No.1630062015016)

摘　　要：以菠萝叶纤维为原料,采用均相酯化取代反应制备了改性纤维素甲醛净化材料。以氯化血红素为催化剂、DMSO/LiCl为溶剂,在均相条件下对菠萝叶纤维素进行酯化取代改性反应。系统考察了反应条件对纤维素酯化效率的影响,改性后的菠萝叶纤维素的酯化效率为15.64%,并且其对甲醛降解效果最好。对改性前后的菠萝叶纤维素进行扫描电镜(SEM)、红外光谱(FT-IR)、热重分析(TGA)和比表面积(BET)分析,发现改性纤维素表面出现大量颗粒状物质;有氯化血红素的吸收峰出现;改性纤维素的比表面积显著提高,有利于吸附甲醛;热分解温度降低、最终残留物比例较高,说明了发生了酯化取代反应。A modified cellulose material of formaldehyde scavenging was prepared by homogeneous esterification substitution of pineapple leaf fiber. Esterification modification of pineapple leaf cellulose was conducted using hemin as the catalytic agent and DMSO/LiCl as the solvent under homogeneous condition. The effect of reaction conditions on the esterification efficiency of cellulose was investigated systematically. The results showed that the esterification efficiency of the modified pineapple leaf cellulose was 15.64%,and the removal rate of formaldehyde was higher under the same conditions. Pineapple leaf cellulose before and after modification were characterized by scanning electron microscopy（SEM）, fourier transform infrared spectroscopy（FTIR）, thermogravimetric analysis（TGA） and specific surface area（BET）. A large number of granular materials appeared on the surface of the modified cellulose, along with the emergence of the absorption peak of hemin. The specific surface area of the modified cellulose increased significantly and the decomposition temperature decreased. The final residue ratio increased, which indicated that the esterification reaction occured.

关 键 词：菠萝叶纤维 纤维素 氯化血红素 均相改性 甲醛 净化材料 

分 类 号：TS102.6[轻工技术与工程—纺织工程]