摘要
本文采用添食育蚕法,向五龄期家蚕喂食纳米氧化石墨烯(GO)改性的人工饲料制备改性蚕丝。利用扫描电子显微镜、红外光谱、广角X射线衍射等技术对改性前后蚕丝的结构及性能进行表征。结果表明,GO被成功导入丝素蛋白,未明显影响蚕丝表面形貌,但限制了丝素蛋白二级结构转变及结晶,明显提升了蚕丝的力学性能。
In this paper,graphene oxide(GO)modified artificial diet was fed to the fifth instar silkworm to prepare modified silk using a direct feeding method.Scanning electron microscope(SEM),Fourier transform infrared(FTIR)spectra,wide-angle X-ray scattering(WAXD)and other techniques were used to characterize the structure and properties of silk.Results showed that GO was successfully introduced into silk fibroin,which did not affect the surface morphology of silk.The addition of GO hindered the transformation of silk fibroin fromα-helix/random coil conformation toβ-sheet conformation,restricted the crystallization of silk fibroin,but significantly improved the mechanical properties of silk.
作者
詹琦
蔡凌月
范苏娜
邵惠丽
张耀鹏
Zhan Qi;Cai Lingyue;Fan Suna;Shao Huili;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》
2020年第1期37-40,共4页
Synthetic Technology & Application
基金
国家重点研发计划(2018YFC1105800)
国家自然科学基金(21674018,51903045)
上海市科学技术委员会国际合作基金(19520744500)
中央高校基本科研业务费专项资金(2232019A3-06,2232019D3-02)。
关键词
氧化石墨烯
添食育蚕法
蚕丝
力学性能
graphene oxide
feeding method
silkworm silk
mechanical properties
