中国组织工程研究 ›› 2020, Vol. 24 ›› Issue (10): 1553-1556.doi: 10.3969/j.issn.2095-4344.2230

• 细胞外基质材料 extracellular matrix materials • 上一篇    下一篇

制备表面图案化的聚丙烯酰胺-丙烯酸水凝胶

李淑华1,李美兰2   

  1. 1江苏工程职业技术学院,江苏省南通市  226007;2南通大学医学院,江苏省南通市  226000
  • 收稿日期:2019-05-13 修回日期:2019-05-29 接受日期:2019-07-15 出版日期:2020-04-08 发布日期:2020-02-15
  • 作者简介:李淑华,女,1966年生,江苏省南通市人,汉族,副教授,硕士,主要从事高分子材料改性和制备研究。
  • 基金资助:
    江苏省先进纺织工程技术中心科研立项项目(XJFZ/2015/9)

Preparation of the surface patterned polyacrylamide-acrylic hydrogel

Li Shuhua1, Li Meilan2   

  1. 1Jiangsu Engineering College, Nantong 226007, Jiangsu Province, China; 2Medical College of Nantong University, Nantong 226000, Jiangsu Province, China
  • Received:2019-05-13 Revised:2019-05-29 Accepted:2019-07-15 Online:2020-04-08 Published:2020-02-15
  • About author:Li Shuhua, Master, Associate professor, Jiangsu Engineering College, Nantong 226007, Jiangsu Province, China
  • Supported by:
    the Advanced Textile Engineering Technology Center Project of Jiangsu Province, No. XJFZ/2015/9

摘要:

文题释义:
水凝胶图案化:将印章带有图案的一面朝上,另一面用双面胶紧贴多孔板单孔的中心,用手指压紧以防止在加热过程中印章漂浮,这样水凝胶可以很好地将印章覆盖,不会出现水凝胶中间产生空洞的现象,使水凝胶很好图案化。
聚丙烯酰胺-丙烯酸水凝胶:聚丙烯酰胺水凝胶具备良好的生物相容性,但力学性能较差。通过微模塑图形化压印制备具有特殊尺寸的聚丙烯酰胺-丙烯酸水凝胶,依次将不同体积的聚丙烯酰胺溶液、丙烯酸与过硫酸铵溶液混合进行了6组实验研究。随着丙烯酸比例的不断增加,水凝胶的力学性能逐渐增强,当丙烯酸含量最多时即聚丙烯酰胺体积为0.9 mL时应力为30 MPa,应变最大为0.023%。

背景:聚丙烯酰胺水凝胶具备良好的生物相容性,但力学性能较差,影响了其在生物材料领域的应用。

目的:通过微模塑图形化压印制备具有特殊尺寸的聚丙烯酰胺-丙烯酸水凝胶。

方法:依次将不同体积的聚丙烯酰胺溶液、丙烯酸与过硫酸铵溶液混合,加入含有微模塑图形化印章的孔板中,制备聚丙烯酰胺-丙烯酸水凝胶:A组聚丙烯酰胺溶液1.4 mL,丙烯酸0.1 mL;B组聚丙烯酰胺溶液1.3 mL,丙烯酸0.2 mL;C组聚丙烯酰胺溶液1.2 mL,丙烯酸0.3 mL;D组聚丙烯酰胺溶液1.1 mL,丙烯酸0.4 mL;E组聚丙烯酰胺溶液1.0 mL,丙烯酸0.5 mL;F组聚丙烯酰胺溶液0.9 mL,丙烯酸0.6 mL。6组过硫酸铵溶液均为50 µL。光镜下观察水凝胶的图案化结构,电子万能试验机检测水凝胶的力学性能。

结果与结论:光镜显示各组水凝胶表面的条纹清晰可见;丙烯酸的加入有效改良了水凝胶的力学性能,随着丙烯酸比例的不断增加,水凝胶的力学性能逐渐增强。结果表明,聚丙烯酸-丙烯酰胺水凝胶具有良好的力学性能,有望在组织工程损伤修复领域具有良好的应用前景。

ORCID: 0000-0001-7773-7930(李淑华)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


关键词: 表面图案化, 聚丙烯酰胺, 丙烯酸, 水凝胶, 力学性能, 组织工程, 生物材料, 制备

Abstract:

BACKGROUND: Polyacrylamide hydrogels have good biocompatibility, but their mechanical properties are poor, which affect their application in the field of biomaterials.

OBJECTIVE: To prepare the polyacrylamide-acrylic hydrogels with a particular size by micromolding graphical imprinting.

METHODS: Polyacrylamide-acrylic hydrogel was prepared by sequentially mixing different volumes of polyacrylamide solution, acrylic acid and ammonium persulfate solution into an orifice plate containing a micromolded patterned seal. Group A: polyacrylamide solution 1.4 mL, acrylic acid 0.1 mL; group B: polyacrylamide solution 1.3 mL, acrylic acid  0.2 mL; group C: polyacrylamide solution 1.2 mL, acrylic acid 0.3 mL; group D: polyacrylamide solution 1.1 mL, acrylic acid 0.4 mL; group E: polyacrylamide solution 1.0 mL, acrylic acid 0.5 mL; group F: polyacrylamide solution 0.9 mL, acrylic acid 0.6 mL. Six groups of ammonium persulfate solution were all 50 μL. The patterned structure of the hydrogel was observed under a light microscope. The mechanical properties of the hydrogel were examined by an electronic universal testing machine.

RESULTS AND CONCLUSION: Light microscope showed that the stripes on the surface of each group of hydrogels were clearly visible. The addition of acrylic acid effectively improved the mechanical properties of hydrogels. As the proportion of acrylic acid increased, the mechanical properties of hydrogels gradually increased. These results suggest that polyacrylic acid/acrylamide hydrogel has good mechanical properties and is expected to have good application prospects in the field of tissue engineering damage repair.

Key words:

"> surface patterned, polyacrylamide, acrylic acid, hydrogel, mechanical property, tissue engineering, biomaterials, preparation

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