HIGH-RESOLUTION SOLID-STATE F-19-NMR SPECTROSCOPY OF THE SORPTION AND DIFFUSION OF FLUORINE-CONTAINING AROMATIC-MOLECULES IN POLYMERIC MEDIA

被引：11

作者：

TOSCANO, PJ

WAECHTER, J

SCHERMERHORN, EJ

ZHOU, PG

FRISCH, HL

机构：

[1] Department of Chemistry, State University of New York at Albany, Albany, New York

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1993年 / 31卷 / 04期

关键词：

F-19 SOLID-STATE NMR SPECTROSCOPY; DUAL-MODE SORPTION; DIFFUSION COEFFICIENTS;

D O I：

10.1002/pola.1993.080310403

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

High-resolution F-19 solid-state NMR spectroscopy was employed to study the sorption properties of hexafluorobenzene (HFB) and 3,5-bis(trifluoromethyl)aniline (TFMA) in polystyrene (PS) and butyl rubber (BR). The NMR spectra indicate that the penetrants undergo dual-mode sorption in the glassy polymer (PS), but are highly mobile in the rubbery polymer (BR). In addition, the NMR method was utilized in the experimental determination of diffusion coefficients for the HFB/PS, TFMA/PS, and HFB/BR systems through desorption studies. The diffusion results for the TFMA/PS case agree very well with those previously obtained via resonance nuclear reaction analysis.

引用

页码：859 / 863

页数：5

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