摘要
为获得力学性能优异的再生丝素蛋白(RSF)纤维,采用单通道微流控湿法纺丝,将RSF溶液与丝素纳米带(SNR)以1000∶0、1000∶1、500∶1、300∶1的质量比混合成质量分数33%的纺丝液,制备RSF基复合纤维。采用傅里叶红外光谱仪(FTIR)、扫描电子显微镜(SEM)、材料试验机等对所得纤维的结构和性能进行表征,结果表明少量SNR的加入使纤维表面粗糙度降低,促进了丝素蛋白二级结构的转变和结晶,显著提高了复合纤维的强度和断裂能。RSF/SNR-500纤维的断裂强度可达405.6 MPa,断裂伸长率达25.1%。
In order to obtain regenerated silk fibroin fiber(RSF)with excellent mechanical properties,microfluidic wet spinning was adopted to prepare RSF/silk nanoribbon(SNR)composite fiber.The mass ratios of RSF/SNR suspensions were 1000∶0,1000∶1,500∶1,300∶1,respectively.The structure,morphology and properties of the wet-spun fiber were characterized by Fourier transform infrared(FTIR)spectroscopy,scanning electron microscope(SEM)and material testing machine.Results showed that the RSF/SNR composite fiber was reinforced and toughened by adding trace amount of SNR.
作者
王少玉
鲁丽
牛欠欠
范苏娜
张耀鹏
Wang Shaoyu;Lu Li;Niu Qianqian;Fan Suna;Zhang Yaopeng(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)
出处
《合成技术及应用》
2021年第1期6-10,共5页
Synthetic Technology & Application
基金
国家自然科学基金(21674018,51903045)
上海市优秀学术带头人计划(20XD1400100)
上海市自然科学基金(20ZR1402400)。
关键词
丝素蛋白
丝素纳米带
微流控纺丝
力学性能
silk fibroin
silk nanoribbon
microfluidic spinning
mechanical properties
