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ARS Home » Midwest Area » Peoria, Illinois » National Center for Agricultural Utilization Research » Plant Polymer Research » Research » Publications at this Location » Publication #230110
Title: Blends and Iodine complexes of starch with other water-soluble polymers

Author
item Biswas, Atanu

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 8/30/2008
Publication Date: 9/24/2008
Citation: Biswas, A. 2008. Blends and Iodine complexes of starch with other water-soluble polymers. Meeting Abstract. xx.

Interpretive Summary:

Technical Abstract: In this work, we studied the viscosity and gel formation in the tri-component system, starch/poly(acrylic acid) (PAA), poly(N-vinyl pyrrolidone) (PVP). Starch and poly(acrylic acid) at 5% aqueous solution formed a synergistic mixture at 60/40 ratio. The addition of a small amount of PVP caused the formation of gel particles. In contrast, starch and PVP in solution showed no significant interactions between them in all proportions; yet, the addition of PAA also caused gel formation. The corresponding data for poly(vinyl pyrrolidone)-iodine (PVPI) were also obtained. The addition of PVPI to a starch: PAA solution first increased the solution viscosity; further addition of PVPI caused gel formation. Similarly, starch and PVPI at 5% aqueous solution formed a synergistic mixture at 80/20 ratio; the addition of a small amount of PAA first caused a decrease in viscosity and then an increase. These observations are consistent with the formation of interpolymer complexes and specific interactions among the polymers.