Materials Science Centre, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
Carbohydr Polym. 2013 Feb 15;92(2):2118-27. doi: 10.1016/j.carbpol.2012.11.039. Epub 2012 Nov 23.
The present work is an endeavor to prepare lignocellulosic biomass based adsorbent, suitable for removal of organic and inorganic pollutants from industrial effluents. Lignocellulosic Corchorus olitorius fibre (jute fibre) surface was grafted with naturally available polyphenol, tannin, preceded by the epoxy-activation of fibre surface with epichlorohydrin under mild condition in an aqueous suspension. The reaction parameters for the modification, viz., concentration of epichlorohydrin and tannin, time, and temperature were optimized. The successful occurrence of surface modification of jute fibre (JF) was characterized and estimated from weight gain percent, elemental analysis, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, scanning electron and atomic force microscopy, and thermogravimetric analysis. An extensive analysis of deconvoluted FTIR spectra using the Voigt model was utilized to ensure the surface grafting. The microbiological susceptibility study revealed high persistency of JF towards biodegradation after efficient grafting with tannin.
本工作旨在制备基于木质纤维素的吸附剂，以去除工业废水中的有机和无机污染物。用天然多酚单宁对木质纤维素黄麻纤维（黄麻纤维）表面进行接枝，在温和条件下，用环氧氯丙烷在水悬浮液中预先对纤维表面进行环氧化活化。对改性的反应参数（即，环氧氯丙烷和单宁的浓度、时间和温度）进行了优化。通过增重百分比、元素分析、傅里叶变换红外光谱（FTIR）、X 射线衍射、扫描电子显微镜和原子力显微镜以及热重分析对黄麻纤维（JF）的表面改性成功进行了表征和评估。使用 Voigt 模型对解卷积的 FTIR 光谱进行了广泛的分析，以确保表面接枝。微生物敏感性研究表明，黄麻纤维在经过单宁有效接枝后，对生物降解具有很高的持久性。
