牛奶蛋白接枝改性对兔毛纤维性能的影响

 为了提高兔毛纤维的表面摩擦因数和拉伸强度，分别以H2SO4和H2O2作为处理剂对兔毛纤维进行预处理，蔗糖脂肪酸酯缩水甘油醚为交联剂，在不同工艺条件下采用牛奶蛋白质对兔毛表面进行接枝改性处理。分析研究了接枝改性前后兔毛纤维表面形貌、摩擦因数、强度等指标。研究结果表明，经过H2SO4预处理后，蛋白质质量分数在10%，交联剂质量分数在1%～1.5%时纤维表面接枝效果最佳，摩擦因数提高能达到40.97%，强度提高能达到4.96%；经过H2O2预处理后的兔毛纤维，其接枝交联的效果相对较差，虽然在蛋白质10%，交联剂1.5%的条件下，其摩擦因数增大32.33%，但是整体而言其强度下降较大，纤维损伤相对严重。

Influence of milk protein grafting on performance of rabbit fiber

To improve the rabbit fiber′s surface friction coefficient and tensile strength,the pretreatment of rabbit fibers was first performed with H2SO4 and H2O2 respectively,using sucrose ester of fatty acid diglycidyl ether as the cross-linking agent,and then in a separate step the surface modification of the fibers was carried out by grafting milk proteins under different process conditions.The indexes such as surface morphology,friction coefficient and strength of the rabbit fibers before and after graft modification were examined.The results show that,with the pretreatment of H2SO4,under the conditions of mass fraction of protein 10% and mass fraction of cross-linking agent 1.5%,the best grafting result on the fiber surface is achieved,with the friction coefficient increased by 40.97% and fiber strength by 4.96%.The grafting effect with the pretreatment of H2O2 is relatively poor.Although the friction coefficient is increased by 32.33% under the conditions of mass fraction of protein 10% and mass fraction of cross-linking agent 1.5%,the fiber damage and strength loss are serious.