Accession Number : ADA114774

Title :   Raman Study of Solid State Reactions in Polymeric Materials.

Descriptive Note : Final rept. 1 Sep 78-31 Aug 81,


Personal Author(s) : Prasad,Paras N

PDF Url : ADA114774

Report Date : Aug 1981

Pagination or Media Count : 35

Abstract : This research accomplished under this grant focused on intermolecular interaction and reaction dynamics of several monomeric as well as polymeric systems. Specifically the following research areas were investigated: (1) Vibrational relaxation in organic solids. This study was necessitated from a need to formulate conditions under which a selective vibrational as well as a phonon excitation could be used to produce novel products by state selected chemistry; (2) Phonon spectroscopy of reactions in solids. This novel method was used to determine the mechanism of reactions and the role of phonons in reactivity of solids; (3) Raman phonon study of pharmaceutical solids in relation to their bioavailability. The method of Raman phonon spectroscopy was introduced as a convenient method to study various solid state forms of a given drug and their physical and chemical stabilities; (4) Structure and dynamics of the conducting complex: (Benzophenone)9 (KI)2 I7 CHCl3. Some preliminary work was done on this novel group of conducting materials; and (5) Phonon spectroscopy of polymeric alloy. This new method was introduced to determine the molecular homogeneities of polymer blends. (Author)

Descriptors :   *Raman spectroscopy, *Solid state chemistry, *Polymers, *Materials, Molecule molecule interactions, Mixtures, Raman spectra, Solids, Phonons, Excitation, Alloys, Reaction kinetics, Relaxation, Molecular vibration

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE