【摘要】 废弃固体蛋白资源化利用和农用地膜的"白色污染"均是目前急需解决的热点问题.研究采用碱氧化法水解废弃牛毛,将牛毛水解蛋白液与PVA、戊二醛和甘油共混制作液体地膜并表征其理化性能.以共混膜的不挥发物含量、拉伸强度、断裂伸长率以及在水中的溶胀性等为指标,单因素法考查了水解液与PVA的质量比、戊二醛用量、甘油用量、共混温度和时间等因素对共混膜性能的影响.研究优化的制膜工艺为:水解液与PVA质量比8∶1,甘油0.3 g,戊二醛0.2 g,温度100℃,时间40 min.采用XRD、FT-IR和DSC等手段对共混膜的结构和性能进行表征.共混膜热稳定性较好、具有保温保湿和促进农作物生长等性能.更多还原

【Abstract】 The "white pollution"of agricultural film and rejected solid protein resource utilizationis a hot issue that needs to be solved urgently.The alkali oxidization method was used to hydrolyze the waste cow hair,and the hydrolyzed protein solution of bovine hair was blended with PVA,glutaraldehyde and glycerin to prepare a liquid film and its physical and chemical properties were characterized.The non-volatile content,tensile strength,elongation at break and swellability in water were used as indicators to analyze the single factor method.The effects of the mass ratio of hydrolysate to PVA,the amount of glutaraldehyde,the amount of glycerin,the blending temperature and the blending time on the properties of the blended membrane were investigated.The structure and properties of the blend membrane were characterized by XRD,FT-IR and DSC.The experimental results show that the optimal membrane preparation process:Hydrolysate and PVA mass 8∶1,glycerol 0.3 g,glutaraldehyde 0.2 g,temperature is 100 ℃,time 40 min.The blend membrane not only has the properties of good thermal stability,heat preservation and moisturization,and promotes the growth of crops,but also reduces environmental pollution and realizes the resource utilization of tannery waste.更多还原