Renormalized Flory‐Huggins lattice model of physicochemical kinetics and dynamic complexity in self‐healing double‐network hydrogel,Journal of Applied Polymer Science

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Renormalized Flory‐Huggins lattice model of physicochemical kinetics and dynamic complexity in self‐healing double‐network hydrogel
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-11-24 , DOI: 10.1002/app.50304
Ziyu Xing ₁ , Haibao Lu ₁ , Mokarram Hossain ₂

Affiliation

Self‐healing capability offers great designability on mechanical properties of double‐network (DN) hydrogel. However, the thermodynamics understanding behind such physicochemical transitions and self‐healing behaviors are yet to be explored properly. This study describes a renormalized Flory‐Huggins lattice model for DN hydrogels, of which the physicochemical kinetics and dynamic complexity are resulted from stress‐induced bond scission and macromolecule rearrangement. Based on the Flory‐Huggins lattice model and Gaussian distribution theory, an extended free‐energy model was formulated by the steric repulsive free‐energy function. Afterwards, the function was used to identify the working mechanisms and thermodynamics in self‐healing DN hydrogels with ultra‐high mechanical strength. Finally, the effectiveness of model was demonstrated by applying it to predict the mechanical behaviors of DN hydrogels, where the analytical results showed good agreements with experiment data.

中文翻译：

自愈双网络水凝胶的物理化学动力学和动力学复杂性的重新归一化Flory-Huggins晶格模型

自修复功能可为双网（DN）水凝胶的机械性能提供出色的设计能力。但是，尚未理解这种理化转变和自我修复行为背后的热力学理解。这项研究描述了DN水凝胶的经过重新规范化的Flory-Huggins晶格模型，其物理化学动力学和动态复杂性是由应力诱导的键断裂和大分子重排引起的。基于Flory-Huggins格子模型和高斯分布理论，通过空间排斥自由能函数建立了扩展的自由能模型。之后，该功能用于识别具有超高机械强度的自修复DN水凝胶的工作机理和热力学。最后，

更新日期：2021-02-01

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