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Citation: Peng Liu, Hongbin Zhang, Sinong Wang, Boxu Gao, Yueer Yan, Yi Tang. 铜乙二胺法测定中国手工纸纤维素特性粘度的改进实验[J]. University Chemistry, ;2021, 36(8): 201006. doi: 10.3866/PKU.DXHX202010068 shu

铜乙二胺法测定中国手工纸纤维素特性粘度的改进实验

Peng Liu ¹ ,
Hongbin Zhang ¹ ,
Sinong Wang ¹ ,
Boxu Gao ² ,
Yueer Yan ¹ ,
Yi Tang ²

1.
Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University Library, Fudan University, Shanghai 200433, China;
2.
Department of Chemistry, Fudan University, Shanghai 200433, China

Received Date: 28 October 2020

介绍了一个通过铜乙二胺法测定纤维素特性粘度的改进实验。在该方法中，木质素对纤维素特性粘度的测定会产生巨大影响。为了探讨这一问题，本实验构建纤维素-木质素模型，讨论了木质素含量对纤维素特性粘度的影响，并采用改进的计算方法获得了更加准确的纤维素特性粘度和聚合度。此外，还探讨了与空气接触时，不同溶解时间对纤维素铜乙二胺特性粘度的影响。该实验是纤维素相关材料的基本表征实验，学生可以了解纤维素的基本性质和溶解机理，以及高分子材料粘度的测定和粘度计的使用方法，还可以学习构建简单模型对各组分影响进行探讨。
- Cellulose,
- Lignin,
- Copper ethylenediamine,
- Intrinsic viscosity
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