| 羽毛纤维对Cu2+的吸附机理探究 |
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| 引用本文： | 卢璐,王洪,柯勤飞,靳向煜.羽毛纤维对Cu2+的吸附机理探究[J].东华大学学报(自然科学版),2011,37(6):740-744. |
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| 作者姓名： | 卢璐 王洪 柯勤飞 靳向煜 |
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| 作者单位： | 东华大学纺织面料技术教育部重点实验室,上海,201620 |
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| 基金项目： | 上海市自然科学基金资助项目(11ZR1400900) |
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| 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.
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| 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) |
Cu2+Uptake Mechanism of Feather Fiber |
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| LU Lu
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WANG Hong
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KE Qin-fei
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JIN Xiang-yu.Cu2+Uptake Mechanism of Feather Fiber[J].Journal of Donghua University,2011,37(6):740-744. |
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| Authors: | LU Lu WANG Hong KE Qin-fei JIN Xiang-yu |
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| Institution: | (Key Laboratory of Textile Science & Technology,Ministry of Education,Donghua University,Shanghai 201620,China) |
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| Abstract: | After adsorbing Cu2+ 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 Cu2+ uptake mechanism of feather fibers was studied.The results showed that cystine located at β-sheet chains may coordinate with Cu(Ⅱ).After adsorbing Cu2+,α-helical structures in feather keratin were increased while β-sheet structures were decreased relatively. |
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| Keywords: | feather fiber uptake mechanism Fourier transform infrared spectroscopy(FT-IR) electron paramagnetic resonance(EPR) X ray diffraction(XRD) |
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