Structure and properties of cocoons and silk fibers produced by <Emphasis Type="Italic">Hyalophora cecropia</Emphasis> |
| |
| Authors: | Narendra Reddy Yiqi Yang |
| |
| Affiliation: | (1) Department of Textiles, Clothing & Design, University of Nebraska-Lincoln, 234, HECO Building, East Campus, Lincoln, NE 68583-0802, USA;(2) Department of Biological Systems Engineering, University of Nebraska-Lincoln, 234, HECO Building, East Campus, Lincoln, NE 68583-0802, USA;(3) Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, 234, HECO Building, East Campus, Lincoln, NE 68583-0802, USA; |
| |
| Abstract: | This paper shows that silk fibers produced by cecropia (Hyalophora cecropia) have similar tensile properties but different amino acid composition than that of mulberry (Bombyx mori) silk. The cecropia fibers are also much finer and have better strength and modulus than tasar silk, the most common non-mulberry silk. Cecropia is one of the largest silk producing moths and has similar lifecycle to that of mulberry silk but is easier to grow and produces
larger cocoons than mulberry silk. In this study, we have characterized the composition, morphology, physical and tensile
properties, and thermal behavior of the cecropia silk. Cecropia cocoons have a three tier structure and are larger (750 mg) than the cocoons produced by B. mori (650 mg). Fibers in the three layers in cecropia cocoons have tensile properties similar to that of B. mori silk but are finer (1.7–2 denier) and have higher strength (3.8–4.3 g/denier) and modulus (68–92 g/denier) than tasar silk. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
