Tuning Physical Crosslinks in Hybrid Hydrogels for Network Structure Analysis and Mechanical Reinforcement
| Autor: | Chuang Liu, Shulin Sun, Zhubao Shao, Xue Lv |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Toughness
Materials science Polymers and Plastics internal structure Network structure General Chemistry Dissipation mechanical properties Mechanical force hybrid particles Article lcsh:QD241-441 Puncture resistance lcsh:Organic chemistry Self-healing hydrogels Mechanical strength Composite material Reinforcement hydrogels |
| Zdroj: | Polymers, Vol 11, Iss 2, p 352 (2019) Polymers Volume 11 Issue 2 |
| ISSN: | 2073-4360 |
| Popis: | Hydrogels with high mechanical strength are needed for a variety of industrial applications. Here, a series of hydrogels was prepared by introducing hybrid particles as hydrophobic association points to toughen the hydrogels. These toughened hydrogels were able to transfer an external mechanical force via the reorganization of the crosslinking networks. They exhibited an extraordinary mechanical performance, which was the result of the coordination between hydrophobic segments and hybrid particles. Herein, the connection between the dissipated energy of the inner distribution structure (on a small scale) and the mechanical properties (on a large scale) was conducted. Specifically, we inspected hydrogels of latex particles (LPs) with different chain lengths (C4, C12, C18) and studied their inner structural parameters, namely, the relationship between the density and molecular weight of crosslinking points to the mechanical strength and energy dissipation. Favorable traits of the hydrogels included compact internal structures that were basically free from defects and external structures with puncture resistance, high toughness, etc. Based on the experimental results that agreed with the theoretical results, this study provides a profound understanding of the internal structure of hydrogels, and it offers a new idea for the design of high-strength hybrid hydrogels. |
| Databáze: | OpenAIRE |
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