DOE is focus of Philadelphia Society October meeting.At the October meeting of the Philadelphia Society, a technical presentation focused on experimental design used to speed commercialization of new products. Given by Liz Blankschaen and Dick Todd Dick Todd is the name of more than one notable person:
prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. Ms. Blankschaen, DOEs are used for optimization, robustness, validation, reproducibility, and repeatability studies for formations, processes, and test method development. Discussion focused on how Noveon has optimized its basic polymer variables in emulsion polymer development using DOE. Such variables include glass transition temperature The glass transition temperature is the temperature below which the physical properties of amorphous materials vary in a manner similar to those of a solid phase (glassy state), and above which amorphous materials behave like liquids (rubbery state). , functionality, backbone monomer monomer (mŏn`əmər): see polymer. monomer Molecule of any of a class of mostly organic compounds that can react with other molecules of the same or other compounds to form very large molecules (polymers). composition, colloidal colloidal of the nature of a colloid. colloidal bath a bath containing gelatin, bran, starch or similar substances, to relieve skin irritation and pruritus. stabilization mechanisms, particle size Particle size, also called grain size, refers to the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. and morphology, molecular weight distribution, degree of branching, and crosslinking. These variables can be controlled by ingredient selection or chosen process. Even at low use levels, functional monomers can play a very important role in performance properties, Ms. Blankschaen explained. Polymer particle morphology was discussed in detail, outlining both uniform and non-uniform shapes. Examples of non-uniform shapes include: core-shell, self-thickening, composition gradient, interpolymer, supported emulsion, and particle core-shell. Use of DOE in coatings was also discussed, citing the example of a primer product. Coating building blocks were then correlated to paint performance properties. Mr. Todd provided a brief statistical overview. A list of commercially available software programs was provided to assist the laboratory chemist get started using DOE. The speaker contrasted the standard "one factor at a time" experimentation approach with the "experimental design" approach. Mr. Todd stated that "one factor" experimentation ignores the possibility of interactions between factors, and as a result, conclusions sometimes may be misleading. The "experimental design" approach examines the effects of factors on the response concurrently, resulting in comparison efficiency and randomization randomization (ranˈ·d  ·m .
--Bruce Matta, Philadelphia Society Secretary |
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