噁唑烷/胶原蛋白提高超细纤维合成革透水汽性的研究  

Study on water vapour permeability improvment of superfiber synthetic leather with oxazolidine/collagen

作　　者：王学川[1] 赵佩[1] 任龙芳[1] 

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021

出　　处：《中国皮革》2017年第2期53-59,共7页China Leather

基　　金：国家自然科学基金项目(51103082);陕西省重点科技创新团队(2013KCT-08);陕西科技大学科研创新团队(TD12-04)

摘　　要：用甲酸对超细纤维合成革进行预处理,以双环噁唑烷5-羟甲基-1-杂氮-3,7二噁唑(3,3,0)辛烷为交联剂,胶原蛋白为改性剂,对超细纤维合成革进行改性以提高其透水汽性。通过正交试验优化出最佳的改性条件:胶原蛋白用量为基布干重的14%,噁唑烷用量为7%,反应时间4.5h,反应温度43℃。改性后超细纤维合成革基布的透水汽性提高了76.45%,抗张强度增强了42.9%,撕裂强度增强了62.36%。通过FT-IR和UV对超细纤维合成革基布的检测,结果表明:胶原蛋白通过噁唑烷成功接枝到基布表面;SEM图显示改性后的基布内部纤维更加疏松;用原子力显微镜(AFM)对改性前后的基布进行对比,结果显示改性后的基布表面更加光滑平整;接触角分析结果表明改性后基布的接触角明显变小。Superfiber synthetic leather was pretreated by formic acid, and oxazolidine 5-hydroxy-1-mixedN-3, 7 double oxazole （3,3,0） octane were used as crosslinking agent, collagen as modifier to improve water vapor permea- bility. The best modification conditions are optimized by orthogonal experiment ： the collagen dosage is 14% of the dry base fabric weigh, crosslinking agent 5 - hydroxy- 1 -mixedN- 3, 7 double （3,3,0） octane is about 7% , reaction time is 4.5h, reaction temperature is 43℃. The water vapor permeability of modified superfiber synthetic leather in- creases 76.45%, the tensile strength increases 42. 9% and tear strength increases 62. 36%. The base cloth of superfi- ber synthetic leather was tested by Fourier Transform Infrared Spectrum （FT-IR） analysis and Ultraviolet Visible spectrophotometer （UV）. Results indicate that oxazolidine successfully grafts collagen to the base surface. Comparing unmodified and modified base cloth with Scanning Electron Microscope （SEM） , we can see modified internal fiber is more loose. Comparing the fabric before and after modification with Atomic Force Microscope （AFM） , results show that the base of the modified surface is smoother and flatter. Contact angle analysis shows that the contact angle ofmodified base fabric decreases significantly compared with the unmodified fabric.

关 键 词：超细纤维合成革 双环噁唑烷 胶原蛋白 改性 透水汽性 

分 类 号：TS565[轻工技术与工程—皮革化学与工程]