Preparation and performance of plasticizers for poly(vinyl chloride) from products of thermal decomposition of waste polystyrene |
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| Authors: | K Saido T Kuroki S Motohashi T Ikemura M Kirisawa |
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| Institution: | 1. Department of Pharmacy, Nihon University No. 8, 1-Chome, Kanda-Surugadai, Chiyoda-ku, Tokyo 101, Japan;2. Industrial Chemistry, College of Science and Technology, Nihon University No. 8, 1-Chome, Kanda-Surugadai, Chiyoda-ku, Tokyo 101, Japan |
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| Abstract: | 2,4-Diphenylbutyl-2,4-diphenylbutyrate (DPBDPB) and 2,4,6-triphenylhexyl-2,4,6-triphenylhexoate (TPHTPH), plasticizers for poly(vinyl chloride), were synthesized from the products of thermal decomposition of waste polystyrene. Their heat stabilities were studied by thermogravimetric analysis and differential thermal analysis, and compared with those of typical plasticizers for PVC such as dibutyl phthalate (DBP), dihexyl phthalate (DHP) and bis(2-ethylhexyl) phthalate (DOP). DPBDPB and TPHTPH showed much higher heat resistance than DOP. PVC was plasticized with a mixed system consisting of DOP as the primary plasticizer and DPBDPB as the secondary. It became clear that DPBDPB is an excellent heat-resistant plasticizer which does not affect the compatibility of PVC with DOP. |
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