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Thursday, February 28 • 2:00pm - 2:30pm
Engineered PolySaccharides: A Novel Biomaterial Additive for the Coatings Industry with Multifunctional Properties - Chemquest

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Engineered PolySaccharides: A Novel Biomaterial Additive for the Coatings Industry with Multifunctional Properties

Polysaccharides are important biopolymers with a wide range of industrial and consumer product applications.  Historically, structural polysaccharides such as cellulose have been the backbone of early material science for a range of applications including coatings.
A new family of engineered polysaccharides has been developed through selective polymerization of sucrose to provide a series of materials ranging in molecular weights, solubility, polymer architecture, and particle morphology.  The underlying enzymatic polymerization process offers the opportunity to design the polymer structure and the material properties of these new biomaterials. One specific example, the linear alpha-1,3-polyglucose, has been assessed for applications in coatings.  This material has been tested for its ability to modify the rheological, mechanical, and optical properties of interior flat coatings.  Our findings suggest that relatively minor concentrations of this engineered polysaccharide have the capacity to function as a substantial rheology modifying (thickening) agent in coatings with attractive shear-thinning characteristics.  The engineered polysaccharide significantly enhances the opacity, whitening, tint strength, and matting characteristics in certain waterborne coating formulations.  With TiO2 costs continuing to increase, the trend remains to identify novel materials that can displace or complement TiO2.  A multi-functional material that offers rheology engineering, opacity building, whitening, tint strength, and matting characteristics could be an attractive new additive to the coatings marketspace where several properties can be imparted to a coating formulation with one material.

avatar for Stephen Raper

Stephen Raper

Biography:Steve has a BS in Chemistry from Marshall University. He started work at Columbia paint in Febuary 1972.  He worked 20 years for small to medium sized paint companies and then went to work for Dry Branch Kaolin which became Imerys.  He retired from Imerys in 2014 and started... Read More →

Thursday February 28, 2019 2:00pm - 2:30pm CST
Astor Grand Ballroom A/B - 2nd Floor