INFRARED LINEAR DICHROISM SPECTROSCOPY BY A DOUBLE MODULATION TECHNIQUE

被引：6

作者：

ABETZ, V

FULLER, GG

STADLER, R

机构：

[1] UNIV MAINZ,INST ORGAN CHEM,JOHANN JOACHIM BECHERWEG 18-20,W-6500 MAINZ,GERMANY

[2] UNIV FREIBURG,INST MAKROMOLEK CHEM,W-7800 FREIBURG,GERMANY

[3] STANFORD UNIV,DEPT CHEM ENGN,STANFORD,CA 94305

来源：

POLYMER BULLETIN | 1990年 / 23卷 / 04期

关键词：

Absorbance Spectra - Linear IR Dichroism - Photoelastic Modulator - SBS Block Copolymers;

D O I：

10.1007/BF00294876

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A linear IR dichroism experiment has been devised using a FTIR instrument in combination with a photoelastic modulator. Based on the Mueller-Stokes calculus, a method to directly obtain the absorbance spectra A vparallel and A vperpendicular from the modulated interferogram is developped, which allows the sensitive evaluation of the dichroic ratio. The photoelastic modulator, in combination with a FTIR instrument, offers high sensitivity, high speed, excellent signal to noise ratio and a broad spectral range from 3300 to 850 cm-1. First experimental results obstained from SBS block copolymer are reported. © 1990 Springer-Verlag.

引用

页码：447 / 454

页数：8

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ABETZ V, UNPUB APPL SPECTROSC

[2] ORIENTATION AND RELAXATION IN UNIAXIALLY STRETCHED POLYVINYL METHYL-ETHER) ATACTIC POLYSTYRENE BLENDS [J].