Light Scattering from Solutions of Organosilane Polymers.
IBM ALMADEN RESEARCH CENTER SAN JOSE CA
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A variety of high molecular weight organosilane polymers have recently been synthesized via the condensation of silyl dichlorides with sodium. These materials have applications as precursors to silicon carbide fibers and as positive resists for ultraviolet lithography. Light scattering results are presented which demonstrate that high molecular weight 10 to the 6th power and correspondingly large molecular dimensions 100 nm in dilute solution are attainable. Relations among various molecular parameters obtained by static and dynamic light scattering are presented and discussed for varying substituents. The ratio of thermodynamic and hydrodynamic dimensions is compared with those reported for carbon backbone polymers where rotation is less hindered.
- Polymer Chemistry