Preparation of Novel Aminated Collagen Peptide and Evaluation of Its Formaldehyde Removal to Leather
Collagen is a typical amphiphilic natural macromolecule with amino-, carboxylic- end and many acidic or alkaline branches. The hydrolysis of collagen will release many hydrophilic functional groups including carboxyl, hydroxyl, amino etc. These functional groups especially amino group can react with formaldehyde, so that collagen peptide can be used as natural formaldehyde scavenger. In order to increase the functional groups that reacted with formaldehyde, the aminated collagen peptide was modified with ethylenediamine as amidogen donator and carbodiimide as dehydrating agent. The characterization of Fourier Transform Infrared Spectrum (FTIR) and amino acid analyzer suggested mat the content of amino group increased. The aminated collagen peptide was used to remove the formaldehyde in oxazolidine tanned leather and the results showed that the amount of formaldehyde removed by the aminated collagen peptide was significantly increased to 61.6％ which was better than that of collagen peptide and commercial formaldehyde scavenger. Moreover, the thickening rate and dye absorptivity of the aminated collagen peptide were 12.5％ and 96.6％, respectively and it also had thickening and assisting dyeing effects to leather. Therefore, modifying the collagen peptide and used as the formaldehyde scavenger has a good potential in achieving the innocent treatment of formaldehyde in leather.
Aminated collagen peptide ethylenediamine carbodiimide formaldehyde scavenger
Ren Long-fang Wang Xue-chuan Luo Yuan-yuan Qiang Tao-tao
College of Resource & Environment, Shaanxi University of Science & Technology, Xian, Shaanxi, P.R.China 710021
国际会议
北京
英文
183-189
2009-10-11（万方平台首次上网日期，不代表论文的发表时间）