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Modifying PVC with Bio-Based PHA Rubber

Diverse products can be obtained from PHB, including bioplastics, chemicals and feed supplementsA new class of renewable and very efficient multifunctional modifiers for PVC has been developed at Metabolix. This series of biobased PHA (polyhydroxyalkanoate) copolymers offers toughening, plasticization, and improved processing of all types of PVC compounds. They also have good UV stability and transparency, do not promote biodegradation, and are fungi resistant. Because of their unique miscibility with PVC, the PHA modifiers do not migrate, extract, or volatilize, and they are easy to handle and process at the same conditions as PVC. They offer a new, simplified approach to PVC formulation in which multiple processing and modifying additives could be replaced with a single product, eliminating both undesirable additive interactions and the need to stabilize unstable ingredients.

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Authored by Metabolix Research Staff

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Malik, M.R., W. Yang, N. Patterson, J. Tang, R.L. Wellinghoff, M.L. Preuss, C. Burkitt, N. Sharma, Y. Ji, J.M. Jez, O.P. Peoples, J.G. Jaworski, E.B. Cahoon, and K.D. Snell, “Production of
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Snell, K.D., Signh, V., Brumbley, S.M. “Production of Novel Biopolymers in Plants: Recent Technological Advances and Future Prospects.” Current Opinion in Biotechnology (2015), 32:68-75.
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McQualter, R.B., Petrasovits, L.A., Gebbie, L.K., Schweitzer, D., Blackman, D.M., Chrysanthopoulos P., Hodson, M.P., Plan, M.R., Riches, J.D., Snell, K.D., Brumbley, S.M., and Nielsen L.K. “The Use of an acetoacetyl-CoA Synthase in place of a B-ketothiolase Enhances poly-3-hydroxybutyrate Production in Sugarcane Mesophyll Cells.” Plant Biotechnology Journal (2014) 1-8.
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Padwa, A. (2014) PHA Modifiers as Polymeric Plasticizers and Process Aids. SPE Vinyltec 2014.
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Andrews, M. (2014) Mirel® PHA Polymeric Modifiers and Additives. ADDCOM 2014.
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McQualter, R.B., Somleva, M.N., Gebbie, L.K., Li, X., Petrasovits, L.A., Snell, K.D., Neilsen, L.K. and Brumbley, S.M. “Factors Affecting Polyhydroxybutyrate Accumulation in Mesophyll Cells of Sugarcane and Switchgrass.” BMC Biotechnology (2014) 14:83.
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Somleva, M.N., Xu C.A., Ryan, K.P., Thilmony, R., Peoples, O., Snell, K.D. and Thomson, J. “Transgene Autoexcision in Switchgrass Pollen Mediated by the Bxb1 Recombinase.” BMC Biotechnology (2014) 14:79.
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Mullen, C. A., Boateng, A. A., Schweitzer, D., Sparks, K., and Snell, K. “Mild Pyrolysis of P3HB/Switchgrass Blends for the Production of Bio-oil Enriched with Crotonic Acid.” Journal of Analytical and Applied Pyrolysis, (2014) 107, 40-45.
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Schweitzer, D., Mullen, C. A., Boateng, A. A., Snell, K. D., “Bio-based N-butanol prepared from poly-3-hydroxybutyrate: optimization of the reduction of n-butyl crotonate to n-butanol.” (2015), Organic Process Research and Development DOI:10.1021/op500156b.
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Kann, Y. (2013) Bio-based PHA copolymers as enhancers of properties of recycled PVC. SPE Vinyltec 2013.
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Kann, Y. (2013) Modification of PVC with bio-based PHA rubber. Part 2. ANTEC 2013.
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Kann, Y., and Engle, B. (2012) Versatile Vinyl Plastic: Formulating for the Future. SPE Vinyltec.
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Bohmert-Tatarev, K., McAvoy, S., Daughtry, S., Peoples, O.P., and Snell, K.D., "High levels of bioplastic are produced in fertile transplastomic tobacco plants engineered with a synthetic operon for production of polyhydroxybutyrate." Plant Physiology (2011), 155(4), pp. 1690-1708.

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Snell, K.D., and Peoples, O.P., “PHA bioplastic: A value-added coproduct for biomass biorefineries.”  Biofuels, Bioproducts & Biorefining (2009) 3, pp. 456-467.

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Somleva, M.N., Snell, K.D., Beaulieu, J.J., Peoples, O.P., Garrison, B.R., and Patterson, N.A., "Production of polyhydroxybutyrate in switchgrass,a value-added co-product in an important lignocellulosic biomass crop." Plant Biotechnology Journal (2008) 6, pp. 663–678.

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Kourtz, L., Dillon, K., Daughtry, S., Peoples, O.P., and Snell, K.D., “Chemically inducible expression of the PHB biosynthetic pathway in Arabidopsi.” Transgenic Research, Springer (Netherlands), pp. 759-769.

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Kourtz, L., Dillon, K., Daughtry, S., Madison, L.L., Peoples, O.P., and Snell, K.D., "A Novel Thiolase-Reductase Gene Fusion Promotes the Production of Polyhydroxybutyrate in Arabidopsis." Plant Biotechnology Journal (2005), pp. 435-447.

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