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| Study on PAM/PU Compression-resistant Hydrogels |
| Received:July 14, 2024 Revised:August 24, 2024 |
| DOI：10.11981/j.issn.1000-6842.2024.04.11 |
| Key Words:polyacrylamide;polyurethane;hydrogel;flexibility;compression-resistant |
| Fund Project:国家自然科学基金项目（52203139）；江苏省自然科学基金项目（BK20221096）；中国科学技术协会青年人才托举工程（2023QNRC0380）。 |
| Author Name | Affiliation | Postcode | | TONG Yuhang | College of Textile Science and Engineering， Jiangnan University， Wuxi， Jiangsu Province， 214122 | 214122 | | LI Kun | College of Textile Science and Engineering， Jiangnan University， Wuxi， Jiangsu Province， 214122 | 214122 | | LONG Zhu | College of Textile Science and Engineering， Jiangnan University， Wuxi， Jiangsu Province， 214122 | 214122 | | ZHANG Dan | College of Textile Science and Engineering， Jiangnan University， Wuxi， Jiangsu Province， 214122 | 214122 | | SI Pengxiang* | College of Textile Science and Engineering， Jiangnan University， Wuxi， Jiangsu Province， 214122 | 214122 |
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| Abstract: |
| This study introduced the preparation process of polyacrylamide （PAM）/polyurethane （PU） compression-resistant hydrogels. Firstly， a systematic study was conducted on the effects of addition amounts of water-based PU and acrylamide （AM）. Furtherly， the preformance of compression and swelling resistance of different PAM/PU hydrogels were investigated， and the potential of its application in articular cartilage substitutes was discussed. The results indicated that the prepared PAM/PU hydrogels exhibited excellent compressive strength， resilience， and toughness. When the mass fraction of AM aqueous solution was 35%， and the amount of PU （calculated by the volume of PU emulsion， solid content of 30%） added was 4 mL， the prepared AM65PU4 gel showed the most excellent compression-resistant performance， with the maximum compression rate up to 69%， and the compression strength of 2.1 MPa. In addition， the hydrogel showed good swelling resistance. The equilibrium swelling rate of AM65PU4 gel in deionized water was 15%， in alkaline condition was 212%， and in acid condition was 9%， which was suitable for use as articular cartilage， and could function stably for a long period of time. |
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