期刊
CELLULOSE
卷 22, 期 2, 页码 1135-1146出版社
SPRINGER
DOI: 10.1007/s10570-015-0575-5
关键词
Sodium periodate oxidation; Aldehyde groups; Oxidized CNC; Wet strength additive; Wet tensile index; Paper strength
资金
- Canada Research Chairs Program
- Tianjin Municipal Science and Technology Commission [12ZCZDGX01100]
The oxidation of cellulose nanocrystal (CNC) by sodium periodate can generate aldehyde functions for crosslinking reactions or for further modification, which can extend the range of applications of CNC. In this paper, the effects of reaction conditions during the periodate oxidation of CNC, such as oxidant concentration, pH, temperature and oxidation time on the oxidized CNC yield and the aldehyde content, were investigated and an optimized reaction condition was identified. The generation of aldehyde groups on the CNC was confirmed by Fourier transform infrared spectroscopy analysis, and the decreased crystalline index was observed by X-ray diffraction. The transmission electron microscope observation showed the morphological changes of CNC after the oxidation. The oxidized CNC was used as a strength additive to paper, and the results showed that the dry tensile index was 32.6 % higher than the control sample, and the wet tensile index was reached to 3.08 N.m/g, at the oxidized CNC dosage of 1.2 %.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据