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Research on the Performance of Polyacrylamide Hydrogel Reinforced by Dopamine-grafted Dialdehyde Cellulose Nanofibril
Received:August 10, 2024  
DOI：10.11980/j.issn.0254-508X.2024.11.003
Key Words:dopamine  dialdehyde cellulose nanofibril  hydrogel  underwater adhesion
Fund Project:国家自然科学基金项目（22178273）；中国博士后基金项目（2023M731166）；山东省博士后创新项目（201903071）。
Author NameAffiliationPostcode
YUAN Shuo Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
LIU Zhexiu Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
XIN Yu Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
XU Wangdong Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
HUO Dan Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457
Shandong Huatai Paper Co.， Ltd. & Shandong Yellow Triangle Biotechnology Industry Research Institute Co.， Ltd.， Dongying， Shandong Province， 257335 		257335
WANG Hanmin Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
ZHANG Fengshan Shandong Huatai Paper Co.， Ltd. & Shandong Yellow Triangle Biotechnology Industry Research Institute Co.， Ltd.， Dongying， Shandong Province， 257335 257335
YANG Qiulin* Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457
State Key Lab of Biobased Fiber Manufacturing Technology， Tianjin University of Science & Technology， Tianjin， 300457
China Light Industry Key Lab of Papermaking and Biorefinery， Tianjin University of Science & Technology， Tianjin， 300457 		300457
HOU Qingxi* Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
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Abstract:In this study， dopamine （DA）-grafted dialdehyde cellulose nanofibril （DA-OCNF） and acrylamide （AM） were used to prepare composite hydrogel （DOCA）， the adhesion performance of DOCA under air and water conditions were analyzed. The results showed that the introduction of DA effectively enhanced the underwater adhesion strength of the hydrogel， the dialdehyde modified OCNF improved the mechanical properties of hydrogel that impacted by the DA. This strategy fully exploited the advantages of two-component， and the prepared composite hydrogels with balanced cohesion and adhesion had high mechanical and adhesion strength. When the content of DA-OCNF came up to 1.0%， the elongation at break and tensile strength of DOC1.0A increased 27.2 precentage points and 54.82 kPa compared with DOC0A， and its adhesion strengths to the steel in air and underwater conditions were came up to 42.70 and 30.65 kPa， respectively.
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