Accession Number : ADA308913

Title :   Chemical Engineering of Synthesis Solutions for Multicomponent Inorganic Polymers and Ceramics.

Descriptive Note : Final rept.,

Corporate Author : MINNESOTA UNIV ST PAUL DEPT OF CHEMICAL ENGINEERING AND MATERIALS SCIENCE

Personal Author(s) : McCormick, Alon

PDF Url : ADA308913

Report Date : MAY 1995

Pagination or Media Count : 6

Abstract : While there have been several studies reported in the literature of the structure and properties of organic/inorganic hybrid materials prepared by 'sol-gel' chemistry, less is known about how solution conditions influence copolymerization kinetics and material nanostructure. We are developing kinetic polymerization models for structure development of this class of materials. We use (29)Si nuclear magnetic resonance spectroscopy to monitor the concentrations of differently hydrolyzed and connected silicon sites, and fit integrated sets of differential equations to these concentrations to quantify kinetic trends as monomers and solution conditions are varied.

Descriptors :   *SOLUTIONS(MIXTURES), *SYNTHESIS, *CERAMIC MATERIALS, *CHEMICAL ENGINEERING, *INORGANIC POLYMERS, NUCLEAR MAGNETIC RESONANCE, INTEGRATED SYSTEMS, POLYMERIZATION, SITES, SILICON, ORGANIC MATERIALS, PATTERNS, DIFFERENTIAL EQUATIONS, MONOMERS, HYBRID SYSTEMS, KINETICS, NUCLEAR RADIATION SPECTROSCOPY, SOL GEL PROCESSES.

Subject Categories : Polymer Chemistry
      Industrial Chemistry and Chemical Processing
      Inorganic Chemistry
      Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE