Abstract
Phthalates pose adverse health effects due to their propensity to leach and the most common, di(2-ethylhexyl) phthalate (DEHP) and di-n-octyl phthalate (DOP), are petroleum-based. Conversely, di-esters, succinates are biobased (produced from fermentation of biomass), biodegradable, and therefore potential sustainable replacements for phthalates. A series of succinates, di-octyl succinate (DOS), di-hexyl succinate (DHS), di-butyl succinate (DBS), and di-ethyl succinate (DES), were mixed with poly(vinyl chloride) (PVC). The interaction of the plasticizer ester carbonyl with PVC shows an average −5 cm−1 shift of the carbonyl absorbance peak energy. The glass transition temperatures (T g), were monitored by differential scanning calorimetry and dynamic mechanical analyses. The T gs of DOS and DHS plasticized PVC were significantly lower than DOP plasticized PVC at a lower percent mass. On the other hand, PVC plasticized with either DBS or DES exhibited a similar trend in lowering the T g as that of DOP plasticized PVC.
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Acknowledgments
The authors would like to acknowledge early project inputs from Prof. Kris Berglund of Lulea University and Michigan State University and Dr. Dilum Dunuwila from Diversified Natural Products Green Technology Inc. This work was supported by the Research Excellence Fund from Central Michigan University.
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Stuart, A., McCallum, M.M., Fan, D. et al. Poly(vinyl chloride) plasticized with succinate esters: synthesis and characterization. Polym. Bull. 65, 589–598 (2010). https://doi.org/10.1007/s00289-010-0271-4
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DOI: https://doi.org/10.1007/s00289-010-0271-4