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The effect of the curing time and temperature on final properties of flexible PVC with an epoxidized fatty acid ester as natural-based plasticizer

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Abstract

One of the most useful polymeric materials at industrial scale is plasticized polyvinyl chloride (P-PVC) or PVC plastisol. This is characterized by optimum balance among processing conditions, overall properties, cost, and versatility; however, it has some problems related to plasticizer migration (generally phthalates derivatives) with toxicity problems. As a consequence of the appearance of new regulations which restrict the use of phthalates, the study of new plasticizers with low toxicity and low migration has become a very interesting research field. In this study, the optimum curing conditions of vinyl plastisols with a natural-based epoxidized fatty acid ester as plasticizer have been investigated by the following mechanical properties: thermal behavior, color changes, solvent migration, and microstructure changes in terms of the curing conditions. This study was carried out with a plasticizer content of 70 phr (per hundred resin); different isothermal curing conditions ranging from 160 to 220 °C, and curing times in the 6–10 min range were used. The results revealed that the best curing conditions are 200 and 220 °C for curing times near to 14 and 10 min, respectively, which are similar to those used for other commonly used plasticizers.

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Acknowledgement

Authors thank microscopy services at UPV for their assistance in using SEM technique.

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Authors and Affiliations

  1. Materials Technology Institute (ITM), Polytechnic University of Valencia, Plaza Ferrándiz y Carbonell s/n, Alcoy, 03801, Alicante, Spain

    O. Fenollar, L. Sanchez-Nacher, D. Garcia-Sanoguera, J. López & R. Balart

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  1. O. Fenollar
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  2. L. Sanchez-Nacher
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  3. D. Garcia-Sanoguera
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  4. J. López
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  5. R. Balart
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Correspondence to D. Garcia-Sanoguera.

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Fenollar, O., Sanchez-Nacher, L., Garcia-Sanoguera, D. et al. The effect of the curing time and temperature on final properties of flexible PVC with an epoxidized fatty acid ester as natural-based plasticizer. J Mater Sci 44, 3702–3711 (2009). https://doi.org/10.1007/s10853-009-3495-7

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  • DOI: https://doi.org/10.1007/s10853-009-3495-7

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