基于碱脲溶剂体系胶化作用的湿强纸的制备

翟　睿; 王慧丽; 胡志军; 张学金; 赵会芳; 周小凡

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Preparation of Wet-strength Paper Based on the Jellification of Alkali-urea System

DOI：10.11981/j.issn.1000-6842.2019.03.24

Key Words:alkali-urea system; Jellification action; Sinocalamus affinis; bleached kraft pulp; wet strength paper

Fund Project:制浆造纸科学与技术教育部/山东省重点实验室开放基金资助（KF201718）；2017年度省级重点研发计划项目（2017C03045）。

Author Name	Affiliation
ZHAI Rui^*	Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology, Hangzhou， Zhejing Province， 310023 Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province， Qilu University of Technology， Ji’nan， Shandong Province， 250353
WANG Huili	Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province， Qilu University of Technology， Ji’nan， Shandong Province， 250353
HU Zhijun	Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology, Hangzhou， Zhejing Province， 310023
ZHANG Xuejin	Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology, Hangzhou， Zhejing Province， 310023
ZHAO Huifang	Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology, Hangzhou， Zhejing Province， 310023
Zhou Xiaofan	Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037

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Abstract:

In this work， the paper made from bleached bamboo （Sinocalamus affinis） kraft pulp was soaked in the NaOH urea aqueous solution， and then freezing and washing processes were applied to prepare wet strength paper. The effects of alkali concentration， soaking time， freezing temperature， freezing time， and washing time were evaluated by single factor experiments. The analyses of FT IR， XRD， TGA， NMR and SEM were applied to reveal the variations of the micro properties of the untreated and treated papers. The optimal preparation conditions were determined as the follows: alkali concentration of 7%， soaking time of 3 s， freezing temperature of -7℃， freezing time of 15 min， and washing time of 15 min. Compared with untreated paper， under the optimal conditions， the dry tensile index of the treated paper increased by 66%， the dry burst index increased by 183%， the wet tensile index increased by 320%， and the wet burst index increased by 980%. There were no significant variations of functional groups and the structures of amorphous or crystalline regions， however， the amount of individual fibers in the treated paper decreased significantly．

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