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

• 材料与性能 • 上一篇    下一篇

紫外光固化PAA⁃PAM共聚水凝胶的制备及性能研究

李雅欣, 谢俊龙, 李成豪, 蔡少君()   

  1. 江汉大学光电材料与技术学院,武汉 430056
  • 收稿日期:2024-08-08 出版日期:2025-07-26 发布日期:2025-07-22
  • 通讯作者: 蔡少君,男,副教授,从事聚合物水凝胶的制备及性能研究方面工作,shaojuncai@163.com
    E-mail:shaojuncai@163.com
  • 基金资助:
    湖北省大学生创新创业训练计划项目(S202411072096)

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
  • Contact: CAI Shaojun E-mail:shaojuncai@163.com

摘要:

以丙烯酸(AA)和丙烯酰胺(AM)为单体,N,N⁃亚甲基双丙烯酰胺(MBA)为交联剂,Irgaure2959为引发剂,通过紫外光固化法制备聚丙烯酸⁃丙烯酰胺(PAA⁃PAM)共聚水凝胶。分别通过傅里叶变换红外光谱仪、扫描电子显微镜、电子万能试验机、流变仪等对共聚水凝胶的各项性能进行表征,并探究丙三醇的加入对水凝胶力学性能、流变性能、保水性能、黏附性能和抗冻、耐热性能的影响。结果表明,加入丙三醇能有效提高共聚水凝胶的断裂伸长率、韧性、保水性、黏附性和极端温度耐受性。通过紫外光固化法制备的共聚水凝胶,当AA和AM单体摩尔比为4∶6,交联剂MBA含量为1 ‰,丙三醇体积百分比为60 vol% 时,其综合性能最佳:断裂伸长率为631.8 %,拉伸强度为53.0 kPa,并且具有良好的黏附性和抗冻、耐热性能。

关键词: 丙烯酸, 丙烯酰胺, 丙三醇, 共聚水凝胶, 紫外光固化

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

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