Polymeric materials are extensively utilized in various industrial applications, including as gas barriers, fuel cells, sensors, and in semiconductor processes, and are particularly critical to ensure sealing performance in high-pressure gas systems. The diffusivity and solubility of gases within polymers significantly influences their sealing efficacy and is closely related not only to polymer–gas interactions but also to the thermodynamic properties of the gases. Notably, gas solubility exhibits a quantitative correlation with critical temperature, attributed to the condensability of the gas molecules. In this study, the solubility of five pure gases (H2, He, N2, O2, Ar) with varying critical temperatures was quantitatively measured and analyzed under high-pressure conditions (1-10 MPa) in four polymers differing in structure and density. The experiments employed both volumetric and manometric methods to measure gas desorption concentration, with meticulous corrections for minor temperature and atmospheric pressure variations to ensure data accuracy. The results demonstrated that the logarithmic solubility of gases in polymers increases linearly with the gas critical temperature, consistent across all polymer samples. This finding aligns with predictions from the Non-Equilibrium Lattice Fluid (NE-LF) model, which has been shown to accurately describe gas solubility behavior in glassy polymers.

Abstract
1. 서 론
2. 실험 방법
    2.1. 시료 준비 및 기체 충전 방법
    2.2. 부피 분석법에 의한 충전된 고분자 시료의 기체방출량 측정
    2.3. 압력 분석법에 의한 충전된 고분자 시료의 기체방출량 측정
    2.4. 기체 장입량 및 확산도 분석 프로그램
3. 결과 및 고찰
    3.1. 부피 분석법과 압력 분석법에 의한 측정 결과
    3.2. 기체 용해도와 기체 임계온도와의 상관관계
4. 결 론
References
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• 이지훈(한국표준과학연구원 수소에너지그룹, 과학기술연합대학원대학교 측정과학전공) | Ji Hun Lee (Hydrogen Energy Group, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea, Department of Measurement Science, University of Science and Technology, Daejeon 34113, Republic of Korea) Corresponding author