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| Preparation of Carboxymethyl Hemicellulose and Its Application with Polyamide Epichlorohydrin Resin as Wet Strength Additive |
| Received:September 28, 2018 |
| DOI：10.11980/j.issn.0254-508X.2019.03.002 |
| Key Words:carboxymethyl hemicellulose polyamide epichlorohydrin resin etherification wet strength |
| Fund Project:基金项目:广州市科技计划项目（201607020025）。 |
| Author Name | Affiliation | | SONG Feiyu | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | | WEI Qi | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | | MA Hao | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | | LIU Xiao | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | | WU Shubin* | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 |
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| Abstract:Carboxymethyl hemicellulose (CMX) with high carboxyl content and high molecular weight was prepared by etherification process,and applied with epichlorohydrin resin to improve the wet strength of paper. The preparation conditions were studied such as the alkaline dosage, the alkalization time, the alkalization temperature, the dosage of etherifying agent, the etherification temperature and the etherification time, the optimal preparation process was explored as follows: the alkalization was carried out for 1 h at room temperature after addition of aqueous NaOH, the molar ratio of hemicellulose and NaOH was 1∶2, the etherification was carried out for 5 h and the etherification temperature was 55℃, the molar ratio of hemicellulose and etherification agent was 1∶1. The wet strength index of the paper reached 9.63 N·m/g when CMX and PAE additions were 4.8% and 2.0% respectively , which was 25.8% higher than that of using PAE alone. |
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