改性菠萝叶纤维结构及其吸附甲醛性能  

Structure and formaldehyde adsorption properties of modified pineapple leaf fiber

作　　者：何俊燕[1] 李明福[1] 张劲[1] 庄志凯[1] 连文伟[1] HE Junyan;LI Mingfu;ZHANG Jin;ZHUANG Zhikai;LIAN Wenwei(Institute of Agricultural Machinery,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong 524091,China)

机构地区：[1]中国热带农业科学院农业机械研究所,广东湛江524091

出　　处：《纺织学报》2019年第5期1-6,共6页Journal of Textile Research

基　　金：广东省自然科学基金项目(2016A030307001);中国热带农业科学院基本科研业务费专项资金项目(1630132017008;1630062015014;1630132018002);湛江市科技计划项目(2017A03015)

摘　　要：为获得具有高吸附性能的纺织材料,以脱胶菠萝叶纤维为吸附载体,氯化血红素为改性剂,经酯化反应制备了改性菠萝叶纤维。借助扫描电子显微镜、傅里叶红外光谱仪、X射线衍射仪、比表面积及孔径分析仪对改性菠萝叶纤维结构进行表征,并研究其吸附甲醛性能。结果表明:改性菠萝叶纤维表面接枝了氯化血红素,属于Ⅰ型纤维素,其相对结晶度由69.3%下降到66.2%;改性菠萝叶纤维的氮气吸附等温线属于Ⅲ型吸附,有少量孔径为2.0～276.1 nm的中孔与大孔,其比表面积、氮气吸附量、滞后环均变小;改性菠萝叶纤维对甲醛的吸附性好于菠萝叶纤维,其吸附甲醛性能随着甲醛初始浓度的增加而降低,随着纤维用量、反应温度和反应时间的增加而提高。In order to obtain high-absorption textile materials, the modified materials of degummed pineapple leaf fiber were prepared by esterification reaction using degummed pineapple leaf fiber as an adsorption carrier and hemin as modifier. The structure of the fiber was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometer, surface area and porosimetry analyzer, and the formaldehyde adsorption properties were also studied. The results show that the surface of the modified fiber is grafted with hemin. It has the crystal structure of cellulose I. The relative crystallinity is decreased from 69. 3% to 66. 2%. The N2 adsorption isotherm belongs to type III adsorption. The modified fibers have a small number of mesopores and macropores with pore size ranged from 2. 0 to 276. 1 nm. The specific surface area, nitrogen adsorption and hysteresis loop are all decreased after modification. The modified degummed pineapple leaf fiber has better formaldehyde adsorption performance than the unmodified fiber. The formaldehyde adsorption capability of modified fiber decreases with the increase of the initial formaldehyde concentration, and increases with the increase of fiber dosage, reaction temperature and reaction time.

关 键 词：脱胶菠萝叶纤维 接枝改性 氯化血红素 吸附性能 甲醛 

分 类 号：TS102.6[轻工技术与工程—纺织工程]