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United States Department of Agriculture

Agricultural Research Service

Title: Reactive Extrusion of Starch-Polyacrylamide Graft Copolymers

Authors
item Willett, Julious
item Finkenstadt, Victoria

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: November 15, 2003
Publication Date: May 16, 2004
Citation: Willett, J.L., Finkenstadt, V.L. 2004. Reactive extrusion of starch-polyacrylamide graft copolymers. Abstract p.336-339.

Technical Abstract: Graft copolymers of starch and polyacrylamide have been prepared using a twin screw extruder. The effects of initiator type and concentration, moisture content, and starch/monomer ratio on conversion, graft efficiency, graft molecular weight, and frequency of grafting are discussed. Conversion of monomer to polymer exceeding 90% and grafting efficiencies exceeding 60% can be achieved by this process, with residence times of approximately 250 seconds or less.

Last Modified: 10/25/2014
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