A rheo-optical FTIR spectrometer for investigating molecular orientation and viscoelastic behavior in polymers

被引：8
|
作者：
Hofmann, GR [1 ]
Sevegney, MS [1 ]
Kannan, RM [1 ]
机构：
[1] Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA
来源：
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION | 2004年 / 9卷 / 04期
基金：
美国国家科学基金会;
关键词：
rheo-optics; FTIR spectroscopy; polymer structure-property relationships;
D O I：
10.1080/10236660490920237
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 rheo-optical Fourier transform infrared (FTIR) spectrrometer has been developed by combining step-scan FTIR spectroscopy with elements of polarimetry and rheometry in order to investigate both deformation-induced morphology changesand orientation/relaxation dynamics of components within complex polymers. This versatile instrument instrument can directly and sensitively measure quantitative infrared spectra at different temperatures and for different deformation processing modes. A complex multiple-modulation/demodulation processing scheme is used to extract both absorbance and dichroism information from a single detector signal. Experimental results from a semicrystalline isotactic polypropylene and a thermoplastic polyurethane are reported in order to illustrate instrument capabilities.
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页码：245 / 274
页数：30
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