A Critical Assessment of the Application of FT-IR Spectroscopy to the Study of Crystalline/Compatible Polymer Blends
For those of us interested in polymer vibrational spectroscopy, the advent of computer-assisted instruments, especially Fourier transform infrared (FT-IR) spectrometers, served to rekindle our interest in applying the technique to complex multicomponent polymer systems such as blends and alloys. FT-IR spectrometers, are inherently more sensitive and accurate than conventional dispersive instruments but if viewed critically, the major advantages of the newer instruments are a direct consequence of the dedicated minicomputer. The use of signal averaging to enhance signal to noise ratio and the ability to manipulate the spectral data by techniques such as spectral subtraction and addition; least squares fitting of spectra; curve resolving and factor analysis has markedly increased our ability to characterize complex multicomponent polymer systems.
KeywordsAmorphous State Polymer Blend Solubility Parameter Carbonyl Band Spectral Subtraction
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