A Polymer-Based Preservation: A New Horizon in Leather Making
Salt-based preservation methods are commercially practiced around the world. The conventional method of preservation employs nearly 40-50％ salt, which is subsequently removed during the soaking operation and thereby contributing to high total dissolved solids (TDS) in tannery wastewater. It accounts for nearly 40％ of TDS load in tannery wastewater. This creates a major stumbling block to the tanners. Hence, an attempt has been made to replace the salt with a synthetic polymer to reduce the TDS in wastewater. Molecular weight and percentage offer of the polymer were standardized based on the rate of dehydration and rehydration of hide matrix. The effectiveness of preservation of goat skins has been visually assessed by experienced tanners and chemically assessed for hydroxyproline in the soaked liquors. The developed process results in significant reduction in total dissolved solids (TDS) and chlorides (Cl). Characteristics of the experimental crust leathers are shown to be on par with control crust leathers.
preservation salt free curing polyethylene glycol total dissolved solids
J.Raghava Rao M Pradeep Kumar K C Kantian Balachandran Unni Nair
Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
国际会议
北京
英文
88-92
2009-10-11（万方平台首次上网日期，不代表论文的发表时间）