NORMAL-MODE ANALYSIS OF INFRARED AND RAMAN-SPECTRA OF POLY(VINYL FLUORIDE)

被引：24

作者：

HONG, JW

LANDO, JB

KOENIG, JL

CHOUGH, SH

KRIMM, S

机构：

[1] UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109

[2] UNIV MICHIGAN,MACROMOLEC RES CTR,ANN ARBOR,MI 48109

来源：

VIBRATIONAL SPECTROSCOPY | 1992年 / 3卷 / 01期

关键词：

INFRARED SPECTROMETRY; RAMAN SPECTROMETRY; 2-FLUOROBUTANE; NORMAL-MODE ANALYSIS; POLY(VINYL FLUORIDE);

D O I：

10.1016/0924-2031(92)85024-U

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Infrared and Raman spectra of samples of poly(vinyl fluoride) (PVF) have been recorded. The vibrational spectra have been analyzed by means of normal-mode calculations. A force field was derived by using 2-fluorobutane as a model compound. Crowder's force field for hydrofluorocarbons was employed as a starting point and subsequently refined in application to secondary fluorides. A planar zigzag, syndiotactic single-chain model of crystalline PVF was submitted to be analyzed by this scheme. A comparison of observed infrared and Raman bands with frequencies calculated for syndiotactic PVF shows that PVF produced by conventional free radical polymerization has an atactic structure, supporting the F-19-NMR results and conclusions reached by Koenig and Boerio. Band assignments in terms of atactic structure are proposed.

引用

页码：55 / 66

页数：12

共 25 条

[1] INFRARED-SPECTRA AND ROTATIONAL-ISOMERISM IN 2-CHLORO, 2-BROMO AND 2-IODOBUTANE [J].