摘要
采用皮粉胶原和改性凹凸棒(OAT)合成了OAT/胶原纳米复合材料,用FTIR和DSC分别研究了胶原改性前后的结构和热稳定性的变化,考查了皮粉胶原与OAT不同质量配比对复合材料吸附单宁酸的影响,并用HPLC分析了复合材料对单宁酸的选择性吸附性能。结果表明:OAT与胶原通过氢键和静电作用形成的OAT/皮粉胶原纳米复合材料,成型性好,热稳定性明显提高。OAT为2%(g/g)的复合材料对单宁酸的单位吸附量最大,而且对单宁酸具有很好的选择性吸附性能。
Collagen and organical attapulgite（OAT） were utilized to prepare OAT-collagen nano-composite as a novel adsorbant.FTIR and DSC were used to examine the molecular interaction and thermal stability of the composite.The absorption capacity for tannin was investigated as a function of the weight ratio of OAT to collagen in the composites,and the selective adsorption ability was studied by HPLC.The experimental results show that the composite adsorbants has good mouldability due to the OAT acting as a crosslinker in the collagen powder matrix.And the thermal stability of the collagen materials is improved after the introduction of OAT.The OAT-collagen nanocomposite adsorbant with 2 wt% OAT has a maximum adsorption capacity and exhibits a selective adsorption for tannin acid.
出处
《中国皮革》
CAS
北大核心
2012年第3期19-23,共5页
China Leather
基金
国家自然科学基金(21074074)资助项目
关键词
胶原
凹凸棒
改性
单宁酸
吸附
collagen
attapulgite
modification
tannic acid
adsorption
