China Plastics ›› 2025, Vol. 39 ›› Issue (7): 22-27.DOI: 10.19491/j.issn.1001-9278.2025.07.005

• Materials and Properties • Previous Articles     Next Articles

Preparation and properties of UV⁃curable PAA⁃PAM copolymer hydrogels

LI Yaxin, XIE Junlong, LI Chenghao, CAI Shaojun()   

  1. School of Optoelectronic Materials & Technology,Jianghan University,Wuhan 430056,China
  • Received:2024-08-08 Online:2025-07-26 Published:2025-07-22

Abstract:

A UV⁃cured PAA⁃PAM copolymer hydrogel was synthesized using acrylic acid and acrylamide as monomers, N,N'⁃methylenebisacrylamide as a crosslinker, and Irgacure™ 2959 as a photo⁃initiator. The hydrogel properties were comprehensively characterized using FTIR, SEM, mechanical testing, and rheological analysis. This study systematically investigated how glycerol incorporation affects the hydrogel's mechanical strength, viscoelasticity, water retention, adhesion, and temperature resistance. Results indicated that glycerol significantly enhanced the hydrogel's performance, improving its elongation at break (631.8 %), tensile strength (53.0 kPa), adhesion, and extreme temperature tolerance. Optimal properties were achieved with an acrylic acid⁃to⁃acrylamide molar ratio of 4∶6, 1 ‰ crosslinker concentration, and 60 vol% glycerol content. The developed hydrogel exhibits excellent comprehensive performance, making it promising for various applications requiring flexibility, durability, and environmental adaptability.

Key words: acrylic acid, acrylamide, glycerol, copolymerized hydrogel, ultraviolet curing

CLC Number: