摘要
为解决再生胶原蛋白基纤维水化程度高、力学性能差、蛋白留存率低等问题,采用从制革废弃物中提取的胶原蛋白与可生物降解的聚乙烯醇(PVA)进行共混纺丝,并引入金属-多酚网络(MPN)进行交联,构建金属配位-氢键双交联网络,制备了具有高蛋白留存率和优异力学性能的复合纤维。借助粒径分析仪和Zeta电位仪探讨了单宁酸(TA)与Al^(3+)的最佳量比及MPN用量对复合纤维性能的影响。结果表明:TA与Al^(3+)的量比为3∶1时,MPN组装使Zeta电位由-2.83 mV降低至-38.58 mV,体系稳定性最佳;MPN的加入通过金属配位键与氢键的协同作用,使胶原蛋白与聚乙烯醇有效交联;MPN的引入提高了复合纤维的结晶度和取向度;当MPN添加量为6%时,复合纤维的断裂强度达到243 MPa,蛋白留存率提高了2倍。本研究为制革固体废弃物的高值化利用及纺织行业的可持续发展提供了新的技术路径。
Objective The textile industry generates a large amount of textile waste every year,which seriously pollutes the environment,and its overreliance on petroleum-based fibers,which are difficult to biodegrade,limits the sustainable development of the textile industry.Therefore,the development of durable and high-performance fibers with a circular economy effect is of great significance for the sustainable development of the textile industry.Method In this research,collagen-based composite fibers with excellent mechanical properties were successfully prepared by blending collagen with biodegradable poly(vinyl alcohol)(PVA)co-spinning,combined with the introduction of metal-polyphenol network(MPN)to construct a metal-ligand-hydrogen-bonded double crosslinked network.Results The results showed that when the n(TA)∶n(Al^(3+))molar ratio was 3∶1,the MPN assembly reduced the zeta potential from-2.83 mV to-38.58 mV,and the system stability was optimal.Infrared spectroscopy analysis indicated that the incorporation of MPN effectively cross-linked collagen with poly(vinyl alcohol)through the synergistic effect of metal-ligand bonding and hydrogen bonding.X-ray diffraction and small angle X-ray scattering/wide-angle X-ray scattering analyses showed that the MPN introduction improved the crystallinity and orientation of the composite fibers.When the MPN addition was 6%,the tensile strength of the composite fibers reached 243 MPa,and the protein retention rate was doubled.Conclusion Co-spinning of collagen with biodegradable PVA and the simultaneous introduction of metal-polyphenol network for the preparation of composite fibers can significantly improve the mechanical properties and protein retention rate of collagen-based composite fibers,which opens up a new way for the high-value utilisation of tannery waste and the sustainable development of the textile industry.
作者
梁锋
方沿
张伟华
唐余玲
李双洋
周建飞
石碧
LIANG Feng;FANG Yan;ZHANG Weihua;TANG Yuling;LI Shuangyang;ZHOU Jianfei;SHI Bi(College of Biomass Science and Engineering,Sichuan University,Chengdu,Sichuan 610065,China;Key Laboratory of Leather Chemistry and Engineering,Ministry of Education,Sichuan University,Chengdu,Sichuan 610065,China;Research Center for Biomass Materials,Tianfu Yongxing Laboratory,Chengdu,Sichuan 610213,China)
出处
《纺织学报》
北大核心
2025年第8期10-17,共8页
Journal of Textile Research
基金
国家自然科学基金青年科学基金项目(22308232)
天府永兴实验室有组织科研项目(2024KJGG20)。
关键词
胶原蛋白
金属-多酚网络
湿法纺丝
聚乙烯醇
力学性能
制革废弃物
胶原基复合纤维
collagen
metal polyphenol network
wet spinning
polyvinyl alcohol
mechanical property
solid waste of leather manufacture
collage-based composite fiber
