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Study on Plasticizing Modification Treatment of Cellulose Fibers by Alkali/Urea Pretreatment
Received:August 06, 2023  
DOI：10.11980/j.issn.0254-508X.2024.02.001
Key Words:cellulose  alkali/urea system  plasticization  formamide
Fund Project:制浆造纸工程国家重点实验室开放基金资助项目（202309）。
Author NameAffiliationPostcode
LIN Shutao State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
LAI Siqi State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
YANG Rendang State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
WANG Yang* State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640
School of Chemistry and Chemical Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 		510640
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Abstract:In this study， the alkali/urea system was firstly used for the wetting and swelling pretreatment of softwood pulp， hardwood pulp and bamboo pulp fibers at different temperatures， respectively. The plasticizing effects of three plasticizers， namely， glycerol， formamide and triethyl citrate， were investigated at different temperatures， concentrations and times by designing a four-factor， three-level orthogonal experiment. The results showed that the softwood pulp pretreated at 10 ℃ had the highest degree of wetting and swelling， which was conducive to further plasticizing and modifying treatment. The optimum plasticization condition was selected by using formamide as the plasticizer at 30% of plasticizer concentration and 25 ℃ for 5 h. The prepared plasticized fibers are expected to be used as alternative materials to plastics in specific areas.
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