吸光度法检测纤维素纳米晶体直径方法研究

Research of Absorbance Method for Detection of CNC Particle Size

关键词:  纳米纤维素  粒径  吸光度  CNC质量分数

Key Words:nanocellulose  particle size  absorbance  CNC mass fraction

摘要:通过分散液吸光度法探究了纤维素纳米晶体（CNC）的吸光度与直径的关系。结果表明，当CNC质量分数0.06%、测试波长220 nm、静置时间0 h时，随着CNC直径增大，分散液的吸光度值逐渐减小，CNC直径与吸光度有良好的线性关系，Y（吸光度）=-0.0054X（CNC直径）+ 0.4438，线性相关系数R²为0.9931。

Abstract:In this study， the relationship of absorbance and diameter of cellulose nanocrystal （CNC） was investigated by the suspension absorbance method. The results showed that when the CNC was 0.06 wt% with the test wavelength of 220 nm for 0 h， the absorbance value of CNC dispersion gradually decreased with the increase of CNC particle size. There was a good linear relationship between CNC diameter and absorbance， of which the linear equation was that Y（absorbance）=-0.0054X（CNC diameter）+0.4438， with a linear correlation R² of 0.9931.