发表机构
Graduate School of Frontier Sciences, The University of Tokyo; Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS); Japan Synchrotron Radiation Research Institute (JASRI)（东京大学前沿科学研究生院; 综合科学研究机构（CROSS）中子科学技术中心; 日本同步辐射研究所（JASRI））
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过贝叶斯统一拟合分析超小角X射线散射数据，解析了不同混合工艺对炭黑填充橡胶层级结构的影响，发现聚集体尺寸等结构参数与力学性能排序一致，为加工-结构-性能关系提供了不确定性感知的分析基础。
AI 中文摘要
贝叶斯推断与统一拟合相结合，以解析混合历史对聚合物纳米复合材料的影响，这些材料的超小角X射线散射曲线在常规分析下几乎无法区分。贝叶斯统一拟合被应用于比较三种通过不同混合工艺制备的炭黑填充三元乙丙二烯共聚物橡胶样品的聚集体尺寸、内部质量分形结构和表面粗糙度。尽管常规统一拟合报告炭黑分散性基本相同，但三种样品的回转半径、质量分形维数和表面分形维数均遵循相同的排序，这与所报告的拉伸强度和断裂伸长率的排序一致，表明推断出的聚集体层级结构对宏观力学响应具有物理意义。这些结果将聚集体尺寸确定为橡胶增强的候选结构描述符，并为研究聚合物纳米复合材料中的加工-结构-性能关系提供了基于不确定性的基础。
英文摘要
Bayesian inference was combined with Unified Fit to resolve the effects of the mixing history on polymer nanocomposites whose ultra-small-angle X-ray scattering profiles are nearly indistinguishable by conventional analysis. Bayesian Unified Fit was applied to comparing the aggregate size, internal mass-fractal structure, and surface roughness for three carbon black--filled ethylene propylene diene copolymer rubber samples prepared by different mixing processes. Whereas conventional Unified Fit reported essentially identical carbon-black dispersions, the radius of gyration, mass fractal dimension, and surface fractal dimension for the three samples all followed the same ordering, which coincides with the reported ordering of the tensile strength and elongation at break and suggests that the inferred aggregate hierarchy is physically meaningful for the macroscopic mechanical response. These results identify the aggregate size as a candidate structural descriptor of rubber reinforcement and provide an uncertainty-aware basis for examining processing--structure--property relationships in polymer nanocomposites.
Comments25 pages, 9 figures
