Selection Rules for the Vibrational Spectra of High Polymers
نویسنده
چکیده
With the aid of the Born cyclic postulate, the selection rules for the vibrational modes of a crystalline polymer and an oriented infinite chain-molecule have been discussed. The necessary conditions for the modes to be active in the infrared or Raman spectrum have been deduced from the translation group of the crystal or of the chain. Approximate methods have also been discussed for a finite chain-molecule and for a high polymer of amorphous form.
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تاریخ انتشار 2003