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Preparation and Adsorption Properties of OS-PVA/P(DMC-AM) Double Network Hydrogel
Received:April 08, 2021  
DOI：10.11980/j.issn.0254-508X.2021.10.006
Key Words:oxidized starch  double network hydrogel  methylene blue  recyclable adsorption
Fund Project:国家“十三五”重点研发计划项目（2017YFB0307901）；生物基材料与绿色造纸国家重点实验室开放基金（201903）。
Author NameAffiliationPostcode
XIE Zhuhang College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
LI Jinbao* College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
XIU Huijuan College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
LI Jingui College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
ZHAO Xin College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
LI Jingyu College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
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Abstract:In this study， a double network hydrogel with good mechanical properties and recyclable adsorption ability was developed via simple radical polymerization between methacryloxyethyltrimethyl ammonium chloride （DMC） and acrylamide （AM） and in the presence of oxidized starch （OS） and polyvinyl alcohol （PVA）. When the concentration of OS solution was 9%， the prepared hydrogel had the best performance. The compression modulus of the hydrogel could reach 2.01 MPa， the swelling degree was only 11.16 g/g， and the maximum adsorption capacity towards methylene blue （MB） was 602.6 mg/g with pH value of 8 and MB concentration of 200 mg/L after 480 min at 25℃. After five times of adsorption-desorption process， the removal rate was still 94.8%， and the desorption rate was 74.2% of double network hydrogel towards MB.
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