A novel set-up for monitoring the gas diffusion process in polymers has been developed. This set-up is based on performing neutron radiography and tomography of polymeric materials under high pressures of gas. Information about the absorption kinetics of supercritical CO₂ was obtained. Additionally, solubility, diffusivity, and macroscopic changes in the dimensions of the samples can be in-situ obtained through the developed measurement technique. This novel approach can be very helpful to analyze the diffusion kinetics in a wide range of polymers.

中文翻译：

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用于聚合物中气体扩散的原位分析的冷中子传输

已开发出一种用于监测聚合物中气体扩散过程的新型装置。该装置基于在高压气体下对聚合物材料进行中子射线照相和断层扫描。获得了关于超临界 CO ₂吸收动力学的信息。此外，溶解度、扩散率和样品尺寸的宏观变化可以通过开发的测量技术原位获得。这种新方法对于分析各种聚合物的扩散动力学非常有帮助。