Studies on the Structures and Properties of Silk Fibroin Solution in Different Divisions of Silk Gland of Silkworm

Yuan JIN; Yao-peng ZHANG; Yi-chun HANG; Jie LUO; Hui-li SHAO; Xue-chao HU

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Studies on the Structures and Properties of Silk Fibroin Solution in Different Divisions of Silk Gland of Silkworm

更新时间：2022-09-18

- Studies on the Structures and Properties of Silk Fibroin Solution in Different Divisions of Silk Gland of Silkworm
- Polymer Bulletin Vol. 25, Issue 5, Pages: 76-81(2012)
- 作者机构：
  
  东华大学纤维材料改性国家重点实验室　材料科学与工程学院，上海　201620
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012-05，
  
  Received：07 November 2011，
  
  Revised：29 November 2011，
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Yuan JIN, Yao-peng ZHANG, Yi-chun HANG, Jie LUO, Hui-li SHAO, Xue-chao HU. Studies on the Structures and Properties of Silk Fibroin Solution in Different Divisions of Silk Gland of Silkworm. [J]. Polymer Bulletin 25(5):76-81(2012)
DOI：

Yuan JIN, Yao-peng ZHANG, Yi-chun HANG, Jie LUO, Hui-li SHAO, Xue-chao HU. Studies on the Structures and Properties of Silk Fibroin Solution in Different Divisions of Silk Gland of Silkworm. [J]. Polymer Bulletin 25(5):76-81(2012) DOI：

摘要

采用偏光显微镜研究了蚕体内不同丝腺部位（包括前部、中部和后部）中丝蛋白溶液的性质变化，并采用了拉曼光谱和旋转流变仪对中部丝腺（包括前区、中区及后区）的丝蛋白分子结构和流变性能进行了分析。结果发现：蚕体内只有前部丝腺及中部丝腺前区的丝蛋白溶液具有偏光现象；丝蛋白溶液在由中部丝腺后区向前区流动的过程中，粘度及弹性均逐渐变小，其构象则由无规卷曲逐渐向α-螺旋转变，并进一步形成β-折叠构象。由此表明，在蚕体内中部丝腺前区的丝蛋白溶液很可能已经形成了液晶态结构。

Abstract

In this paper

the properties of silk fibroin solution from different divisions of silk gland of silkworm (including the anterior

the middle and the posterior divisions) were investigated by polarized microscope. Meantime

Raman spectrum and rotational rheometer were used to analyze the structures and rheological properties of silk fibroin solutions in the different parts of the middle division (including the anterior

the middle and the posterior parts). It was found that only the anterior division and the anterior part of the middle division showed birefringence. Furthermore

with flowing from the posterior part to the anterior part in the middle division of silkworm

the silk fibroin was gradually transfered from random coil into α-helix conformation and then into β-sheet

the viscosity and elasticity of the silk fibroin solution decreased. These results implied that the liquid crystal state structure had been possibly formed in the anterior part of the middle silk gland of silkworm.

关键词

蚕丝腺丝蛋白结构流变

Keywords

SilkwormSilk glandSilk fibroinStructureRheology

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