EPR-spin probe studies of model polymers: separation of covalent cross-linking effects from hydrogen bonding effects in swelled argonne premium coal samples

被引：0

作者：

Spears, D.R. ^{[1
]}

Sady, W. ^{[1
]}

Tucker, D. ^{[1
]}

Kispert, L.D. ^{[1
]}

机构：

[1] Univ of Alabama, Tuscaloosa, United States

来源：

Energy and Fuels | 1993年 / 7卷 / 06期

关键词：

Coal - Crosslinking - Diffusion - Hydrogenation - Paramagnetic resonance - Separation - Swelling - Van der Waals forces;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The swelling behavior of 2-12% cross-linked polystyrene-divinylbenzene (PSDVB) copolymers was examined by an EPR-spin probe technique. It was observed that the mechanism of spin probe inclusion was the intercalation into the matrix rather than diffusion into the pores. The disruption of van der Waals forces between adjacent aromatic rings appeared to be the primary mechanism for pyridine swelling of PSDVB. By comparing the data to results from coal swelling studies it was also inferred that the extend of hydrogen bonding in coal will have a much greater impact on its swelling properties than its covalently cross-linked character.

引用

页码：1001 / 1005