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Shukla S.R.,University under Section 3 of Act 1956 | Kapadi P.U.,University under Section 3 of Act 1956 | Mhaske S.T.,University under Section 3 of Act 1956 | Mali M.N.,University under Section 3 of Act 1956 | More A.,University under Section 3 of Act 1956
Journal of Vinyl and Additive Technology | Year: 2015

This study focuses on the synthesis and application of didecanoate of bis(3-hydroxypropyl) terephthalamide (DD-BHPTA) as a secondary plasticizer in poly(vinyl chloride) (PVC) compounding. DD-BHPTA was synthesized from poly(ethylene terephthalate) bottle waste through aminolysis followed by condensation reaction with decanoic acid. Synthesized DD-BHPTA was characterized by Fourier-transform infrared spectroscopy, differential scanning calorimetry, and nuclear magnetic resonance. Plasticized PVC was prepared by compounding PVC in different ratios with DD-BHPTA and dioctyl phthalate (DOP) using a two-roll mill. This newly synthesized plasticizer completely fused with PVC. The mechanical, thermal, and rheological properties like glass transition temperature, tensile strength, % elongation, dynamic mechanical analysis, solvent resistance, accelerated ultraviolet weathering test for color stability, differential scanning calorimetry, and thermal gravimetric analysis of plasticized PVC were investigated. DD-BHPTA along with DOP plasticizer demonstrated plasticization efficiency similar to that of DOP alone, with the same plasticizer loading. DD-BHPTA was found to be the more efficient plasticizer when used in combination with DOP. Thus, DD-BHPTA can be used as a secondary plasticizer for DOP and can substitute DOP up to 50% of plasticizer loading. © 2015 Society of Plastics Engineers.

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