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Operations Research, Systems Engineering and Industrial Engineering Commons

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California Polytechnic State University, San Luis Obispo

Materials Engineering

2011

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Migration Models - Comparison Of Pvc, Pet And Pla Diffusivity, Combined With A Production Cost Model For Westridge Laboratories, Shelley Cooke, Sarina Surrette May 2011

Migration Models - Comparison Of Pvc, Pet And Pla Diffusivity, Combined With A Production Cost Model For Westridge Laboratories, Shelley Cooke, Sarina Surrette

Materials Engineering

This project has two parts: [1] a migration and diffusivity model for candidate plastics used in containers, and [2] a product cost model for Westridge Laboratories (Santa Ana, CA).

Diffusion modeling is a useful tool to predict migration of polymer constituents into exposed liquids. Polyvinyl chloride (PVC), polyethylene terephthalate (PET) and polylactic acid (PLA) were studied to estimate production costs, and component migration into water-based liquids from plastic containers. Bis (2-ethylhexyl) phthalate (DEHP), antimony trioxide, and stannous octoate, are components of concern in the three candidate polymers, respectively. Normal detection limits for these constituents are about 1 - 10 ppb, …