Sodium periodate oxidation of cellulose nanocrystal and its application as a paper wet strength additive

被引：204

作者：

Sun, Bo ^{[1
,2
,3
,4
,5
]}

Hou, Qingxi ^{[1
]}

Liu, Zehua ^{[1
]}

Ni, Yonghao ^{[1
,2
,3
,5
]}

机构：

[1] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China

[2] Univ New Brunswick, Limerick Pulp & Paper Ctr, Fredericton, NB E3B 5A3, Canada

[3] Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada

[4] Tianjin Univ Sci & Technol, Key Lab Food Nutr & Safety, Minist Educ, Tianjin 300457, Peoples R China

[5] Tianjin Haoxin Cellulose Based Sci & Technol Co L, Tianjin 300457, Peoples R China

来源：

CELLULOSE | 2015年 / 22卷 / 02期

关键词：

Sodium periodate oxidation; Aldehyde groups; Oxidized CNC; Wet strength additive; Wet tensile index; Paper strength; TEMPO-MEDIATED OXIDATION; DIALDEHYDE CELLULOSE; SURFACE MODIFICATION; FIBERS; PULP; BAGASSE; MODEL; FILMS; WATER; ACID;

D O I：

10.1007/s10570-015-0575-5

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

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 %.

引用

页码：1135 / 1146

页数：12

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