Research on the Performance of Polyacrylamide Hydrogel Reinforced by Dopamine-grafted Dialdehyde Cellulose Nanofibril
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 me-chanical 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.
万方数据
维普
