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用X射线衍射法测定丝胶结晶度.测定中以2θ=20.8°处为丝胶无定形散射峰的中心,以2θ=36.0°处的散射强度为纯属无定性部分的贡献,据此进行Ia、Ic的划分,并用统计方法对数据进行处理.用此法测得的结晶度数值与其比容数值呈线性关系.亦用紫外分光光度法测定了丝胶的溶失率,实验表明丝胶蛋白质的溶解性对结晶度有明显的依赖关系.对不同条件下测得的十个丝胶样品进行分析表明,丝胶的结晶度可因外界条件的变化而异,但受其本身化学组成等因素的制约,其结晶度的增加是有限的.
The degree of crystallinity of the sericin was measured by X-ray diffractometry, where the scattering intensity at 2θ = 36.0 ° as the center of the sericin amorphous scattering peak at 2θ = 20.8 ° was the purely amorphous contribution Ia, Ic division, and statistical methods to deal with the data obtained by this method measured the value of crystallinity and its specific volume value of a linear relationship also measured by UV spectrophotometry sericin dissolution rate, the experiment shows that sericin The solubility of the protein has a clear dependence on the degree of crystallinity.The analysis of ten sericin samples measured under different conditions shows that the crystallinity of the sericin may vary with the external conditions, but by its own chemical composition Constraints of factors, the increase of its crystallinity is limited.