壳聚糖改性角蛋白填料的制备与应用
首发时间:2019-11-11
摘要:为了合理利用废牛毛,采用壳聚糖改性废牛毛水解角蛋白制备蛋白填料,并回用于制革复鞣填充工序。角蛋白的最佳改性条件为壳聚糖:角蛋白为20:80,pH值为2,时间5h,改性产物Zeta电位31.3mV,纳米粒度为482d nm。壳聚糖改性角蛋白可作为铬鞣助剂用于复鞣工序,显著降低废液中的总铬。同时,改性角蛋白具有良好的填充性能,用于黄牛鞋面革的填充工序柔软度、撕裂力、抗张强度均有所提高。
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Study on Preparation and Application of Protein Filler by Chitosan Modified Keratin
Abstract:In order to make rational use of waste cattle hair, the protein filler was prepared by using chitosan modified keratin which hydrolyzed waste cattle hair, then used in retanning and filling process. The optimal modification conditions of keratin: chitosan: keratin was 20:80, pH value was 2, time was 5h, chitosan modified keratin product zeta potential was 31.3mV, nanometer particle size was 482d nm. Chitosan-modified keratin can be used as chrome auxiliaries in the retanning process to significantly reduce total chromium in the waste liquid. At the same time, the modified keratin has good filling performance, and the softness, tearing force and tensile strength of the shoe upper leather which filled with chitosan modified keratin are improved.
Keywords: chitosan keratin modified protein filler
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