弹性体中的相变与微相。第二部分：各向异性驱动的形态
Phase transitions and microphases in elastomers. II. Anisotropy-driven morphologies
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中文总结 AI 辅助
该研究基于系列论文第一部分的方法，探究单轴溶胀与刚度梯度对弹性体相行为的影响，发现单轴溶胀可形成稳定层状微相，刚度梯度会改变微相尺寸。
中文摘要 AI 辅助
在溶胀弹性体中，弹性可阻止聚合物网络与溶剂之间发生宏观相分离，从而产生有限尺寸的稳定畴。此前的理论研究多聚焦于各向同性溶胀的弹性体，而各向异性会强烈影响许多相关体系（如凝胶和交联共混聚合物）的相行为。基于本两篇系列论文第一部分提出的方法，我们研究了两种实验诱导的各向异性来源——单轴溶胀和刚度梯度的影响。结果表明，单轴溶胀可导致稳定层状微相的形成并改变相行为，而刚度梯度则会引起特征微相尺寸的空间变化。
英文摘要
In swollen elastomers, elasticity can arrest macroscopic demixing between the polymer network and the solvent, producing stable domains of finite size. While previous theories have focused on isotropically swollen elastomers, anisotropy strongly influences the phase behavior of many related systems, such as gels and crosslinked polymer blends. Building on the approach developed in Part I of this two-part paper, we investigate the effects of two experimentally induced sources of anisotropy: uniaxial swelling and stiffness gradients. We show that uniaxial swelling can lead to the formation of stable lamellar microphases and modify phase behavior, while stiffness gradients can cause spatial variations in the characteristic microphase size.
