东华大学学报（英文版）2005，Vol.22Issue(1)：73-77,5.
Morphology and Microstructure of Spider Dragline Silk from Araneus Ventricosus
Morphology and Microstructure of Spider Dragline Silk from Araneus Ventricosus
摘要
Abstract
The spider dragline silk has excellent mechanical properties. The stress- strain curves of dragline silk fibers have intraspecific and intraindividual variability because of the spiders active control during spinning process. To investigate the relationship between the morphology of dragline silk fibers and spinning conditions, four samples were made at the reeling rates of 1mm/s, 20mm/s, 43.5mm/s and 110mm/s from the major ampullate glands of Araneus Ventricosus and the other two of dragline silks were prepared from a crawling or dropping spider. The surface microstructure and nanofibril characteristic were analyzed with atomic force microscopy (AFM). AFM images of 2000nm*2000nm and 500nm*500nm of these samples showed that the spinning condition influenced the surface roughness and fibril size, while AFM images of 200nm*200nm clearly displayed that dragline silk of Araneus Ventricosus included sheet macro-conformation structure. These results can facilitate the further investigation of the spinning mechanism of a spider in order to understand mechanical properties and macromolecular structures of dragline silk.关键词
Spider silk/Atomic force microscopy/Microstructure/NanofibrilKey words
Spider silk/Atomic force microscopy/Microstructure/Nanofibril引用本文复制引用
PAN Zhi-juan,MIURA Mikihiko,MORIKAWA Hideaki,IWASA Masayuki,LIU Min..Morphology and Microstructure of Spider Dragline Silk from Araneus Ventricosus[J].东华大学学报（英文版）,2005,22(1):73-77,5.基金项目
The work was financially supported by science and technology office of Jiangsu province. （）
