Preparation and Characterization of Tough Hydrogels Reinforced by Polymeric Nanospheres

NING Fang-dong; FU Mei-ting; ZHANG Hui-ying; ZHANG Yu-qi; ZHANG Ran

doi:10.14028/j.cnki.1003-3726.2023.01.008

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Preparation and Characterization of Tough Hydrogels Reinforced by Polymeric Nanospheres

更新时间：2022-11-18

- Preparation and Characterization of Tough Hydrogels Reinforced by Polymeric Nanospheres
- Polymer Bulletin Vol. 36, Issue 1, Pages: 91-98(2023)
- 作者机构：
  
  聊城大学材料科学与工程学院，聊城　252000
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2023.01.008
  CLC：
- Published：20 January 2023，
  
  Received：03 March 2022，
  
  Revised：04 April 2022，
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NING Fang-dong, FU Mei-ting, ZHANG Hui-ying, ZHANG Yu-qi, ZHANG Ran. Preparation and Characterization of Tough Hydrogels Reinforced by Polymeric Nanospheres. [J]. Polymer Bulletin 36(1):91-98(2023)
DOI：

NING Fang-dong, FU Mei-ting, ZHANG Hui-ying, ZHANG Yu-qi, ZHANG Ran. Preparation and Characterization of Tough Hydrogels Reinforced by Polymeric Nanospheres. [J]. Polymer Bulletin 36(1):91-98(2023) DOI： 10.14028/j.cnki.1003-3726.2023.01.008.

摘要

通过无皂乳液聚合制备阳离子纳米微球(NPs)

并将其作为疏水交联中心来制备高强韧水凝胶。体系中的疏水单体甲基丙烯酸月桂酯(LMA)在表面活性剂作用下聚集到纳米微球表面

形成疏水缔合中心

通过原位引发自由基聚合得到纳米微球杂化的聚丙烯酰胺疏水缔合水凝胶P(AAm-LMA)-NPs。当凝胶受到应力时

由纳米微球形成的动态交联点通过断裂与重组可以有效地耗散能量

极大地提高了凝胶的强度和韧性。因此

所制备的P(AAm-LMA)-NPs水凝胶表现出十分优异的机械性能

其最大拉伸强度可达860 kPa

断裂伸长率为1280%

断裂韧性为3.8 MJ/m

。聚合物纳米微球增韧水凝胶的力学性能优异

有望在生物医学和工业领域有重要应用。

Abstract

Here

cationic nanospheres (NPs) were selected as hydrophobic cross-linked centers to enhance the mechanical strength of hydrogel. The hydrophobic monomer lauryl methacrylate (LMA) adsorbed on the surface of NPs to form hydrophobic association in the presence of surfactants

and then the NPs cross-linked P(AAm-LMA)-NPs hydrogels were obtained by

in situ

radical polymerization. Under deformation

the dynamic cross-linking centers formed by nanospheres in the hydrogel network could effectively dissipate energy

via

fracture and recombination

which greatly improved the strength and toughness of hydrogels. As a result

P(AAm-LMA)-NPs hydrogels showed remarkable mechanical properties with an excellent tensile strength of 860 kPa

high stretchability of 1280% and superior toughness of 3.8 MJ/m

. This work constructed tough hydrogels reinforced by polymeric nanospheres and displayed potential applications in biomedical and industrial fields.

关键词

阳离子纳米微球疏水缔合水凝胶机械性能

Keywords

Cationic nanospheresHydrophobic associationHydrogelMechanical properties

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