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中国科学院大学Rudolf Podgornik讲座教授：聚电解质凝胶的电荷调节和溶胀转变
- 来源：
- 学校官网
- 收录时间：
- 2024-12-11 09:43:10
- 时间：
- 2024-12-11 09:30:00
- 地点：
- 五山科技园2号楼324报告厅
- 报告人：
- Rudolf Podgornik
- 学校：
- -/-
- 关键词：
- polyelectrolyte gels, charge regulation, swelling transition, Poisson-Boltzmann theory, Langmuir adsorption isotherm, nanogels, microgels, polypeptide gels
- 简介：
- I will describe the effects of charge-regulated acid/base equilibria on the swelling of polyelectrolyte gels by considering a combination of the Poisson−Boltzmann theory and a two-site charge-regulation model based on the Langmuir adsorption isotherm. By exploring the volume change as a function of salt concentration for both nanogels and microgels, it appears that at certain conditions the gel volume exhibits a discontinuous swelling transition, driven exclusively by the charge-regulation mechanism and characterized by a closed-loop phase diagram. These predictions can be tested experimentally for polypeptide gels.
- -/- 6
报告介绍：
I will describe the effects of charge-regulated acid/base equilibria on the swelling of polyelectrolyte gels by considering a combination of the Poisson−Boltzmann theory and a two-site charge-regulation model based on the Langmuir adsorption isotherm. By exploring the volume change as a function of salt concentration for both nanogels and microgels, it appears that at certain conditions the gel volume exhibits a discontinuous swelling transition, driven exclusively by the charge-regulation mechanism and characterized by a closed-loop phase diagram. These predictions can be tested experimentally for polypeptide gels.
报告人介绍：
Rudolf Podgornik是中国科学院大学物理学院的讲座教授, 国家特聘外国专家。他专注于软物质物理、高分子物理和生物物理，研究领域包括带电流体、Lifshitz色散相互作用理论、Casimir效应、生物膜、高分子和聚电解质（如DNA、RNA）的物理学以及病毒物理学。他撰写了400多篇科研论文，被引用12000多次，并编辑了两本专著，为全球学术做出了杰出贡献。
