羽毛纤维对Cu^(2+)的吸附机理探究  

Cu^(2+)Uptake Mechanism of Feather Fiber

作　　者：卢璐[1] 王洪[1] 柯勤飞[1] 靳向煜[1] 

机构地区：[1]东华大学纺织面料技术教育部重点实验室,上海201620

出　　处：《东华大学学报（自然科学版）》2011年第6期740-744,共5页Journal of Donghua University(Natural Science)

基　　金：上海市自然科学基金资助项目(11ZR1400900)

摘　　要：采用电子顺磁共振(EPR),对吸附CuSO4溶液中Cu2+后的羽毛纤维进行检测;同时,采用傅里叶变换红外光谱(FT-IR)和广角X衍射(XRD)对吸附Cu2+前后的羽毛纤维进行检测,以探讨羽毛纤维吸附Cu2+的机理.研究结果表明:β折叠结晶结构上的胱氨酸可能与Cu(Ⅱ)形成配位结构.吸附Cu2+后,羽毛蛋白中出现更多的α螺旋构型,而β折叠构型相应减少.After adsorbing Cu^2＋ in CuSO4 solution, feather fibers were studied by means of electron paramagnetic resonance （EPR）. Besides, Fourier transform infrared spectroscopy （FT-IR） as well as wide-angle X ray diffraction （XRD） was used to detect feather fibers before and after adsorption. The Cu^2＋ uptake mechanism of feather fibers was studied. The results showed that cystine located at β-sheet chains may coordinate with Cu（ Ⅱ ）. After adsorbing Cu^2＋ , α-helical structures in feather keratin were increased while β-sheet structures were decreased relatively.

关 键 词：羽毛纤维 吸附机理 傅里叶变换红外光谱(FT-IR) 电子顺磁共振(EPR) X衍射 (XRD) 

分 类 号：TS102.64[轻工技术与工程—纺织工程]