发表机构
University of Twente; German Aerospace Center (DLR)（特温特大学; 德国航空航天中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究将凝胶化建模为局部质量守恒的生长渗流过程，通过Voronoi捕获区等机制分离凝胶化与饱和，捕获凝胶后老化，揭示了不同生长机制的共性与成核波动的影响。
AI 中文摘要
聚合物凝胶化涉及从不断生长的富聚合物区域中出现系统尺度的网络，然而传统渗流模型通常独立于材料消耗规定粒子尺寸。我们将凝胶化构建为局部质量守恒的生长渗流过程，其中Voronoi捕获区为单个晶核定义有限材料储库。局部消耗决定演化的过饱和度和极限粒子尺寸，而粒子接触生成动态网络，其首个连通簇定义凝胶点。界面控制、扩散控制和聚合物球控制这三种机制产生不同的凝胶化动力学，却共享相同的可达最终状态。成核的空间波动进一步产生凝胶化时间的分布。该框架将凝胶化与饱和分离，并自然地将凝胶后老化捕获为持续生长和拓扑成熟。
英文摘要
Polymer gelation involves the emergence of a system-spanning network from growing polymer-rich domains, yet conventional percolation models typically prescribe particle size independently of material consumption. We formulate gelation as a locally mass-conserving growth-percolation process in which Voronoi capture zones define finite material reservoirs for individual nuclei. Local depletion determines the evolving supersaturation and limiting particle size, while particle contacts generate a dynamic network whose first spanning cluster defines the gel point. Three mechanisms, namely, interface-, diffusion-, and polymer-blob-controlled growth produce distinct gelation kinetics while sharing the same accessible final state. Spatial fluctuations in nucleation further generate a distribution of gelation times. The framework separates gelation from saturation and naturally captures post-gel aging as continued growth and topological maturation.
Comments3 figures (each with 6 sub-figures)
