Structural Design And Functionalization Of Hydrophobically Associating Hydrogels

The hydrogel has a water content of up to 90% due to its three-dimensional network structure with a large amount of water fixed.The structure and properties of this polymer are similar to those of biological tissues,so it is widely used in tissue engineering,biomedical,and wearable devices.However,conventional hydrogels tend to be brittle and weak and do not meet the performance requirements of the field in which they are applied.In recent years,many researchers have tried to prepare some hydrogels that satisfy the mechanical properties.However,with the increasing demand,a hydrogel with excellent mechanical properties and functionality has been prepared.Became the focus of research.In the first part of this work,the prepared butyl methacrylate(PBA)hydrophobic emulsion particles were introduced into the hydrophobically associating hydrogel system to prepare microsphere composite hydrogel with excellent mechanical properties.During the course of the study,the different structures formed by the emulsion particles and the hydrophobic monomers at different molar ratios were explained in detail.By establishing a mathematical model,the effect of the structure formed by the latex particles and the hydrophobic monomer on the toughness of the hydrogel is explained.Through the fitting of the mathematical model and the experimental data,the error between the model and the experimental data is 0.5%.This model can be used to predict the toughness of emulsion particle toughened hydrogels and lay the foundation for subsequent work.The third part of this work,to further improve the hydrophobic association cross-linking structure,through the introduction of natural polymer emulsifier(arab gum),not only effectively improve the toughness of the hydrogel,but also give the hydrogel a variety of functional,These include: toughness,viscosity,fatigue resistance,self-healing and heavy plasticity.Preparation of toughness and versatility hydrogels by improving the internal structure of hydrophobically associative crosslinked hydrogels.These methods enable hydrogels to meet the mechanical properties of applications and have a variety of functionalities.The hydrogel will be expected to be used in a variety of fields such as tissue engineering,wearable devices and the like.