胶原蛋白/聚乙烯醇复合纤维酸性染料染色研究

将胶原蛋白与聚乙烯醇(PVA)进行共混纺丝,获得了胶原蛋白/PVA复合纤维；研究了胶原蛋白/PVA复合纤维中胶原蛋白含量和染色工艺对复合纤维酸性染料上染的影响；借助紫外可见分光光度计、扫描电镜、纤维电子强力仪等对复合纤维的上染率、截面形貌、力学性能、热水收缩性能等进行了表征.结果表明:胶原蛋白/PVA复合纤维中胶原蛋白...

Study on acid dyeing of collagen/polyvinyl alcohol composite fiber

Collagen/polyvinyl alcohol(PVA) composite fiber was prepared by blend spinning collagen and PVA.The effects of collagen content and dyeing process on the dyeing behavior of the composite fiber for acid dyestuff were studied.The dye up-take, cross section morphology,mechanical properties and hot water shrinkage of the composite fiber were characterized with ultraviolet spectrophotometer,scanning electron microscope,fiber electronic tensile strength tester.The results showed that the collagen/ PVA compoite fiber with collagen-and-PVA mass ratio of 3:7 had the maximal dye up-take about 80%when the dyeing conditions were as followed;3%Acid Brilliant Scarlet GR dye stuff by mass fraction based on the fiber,bath ratio 1:50,3% Na_2SO_4 by mass fraction,4.83 g/L glacial acetic acid by mass concentration,dyeing time 15 min.Dyeing process caused the shrinkage and some flaws in the fiber,which made the breaking strength and initial modulus of the fiber decrease,but not less than 1.9 and 44 cN/dtex,respectively.The softening point in water of the fiber was 92℃,satisfying the application requirement.