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PET/ PETE Polyethylene Terephthalate1.Thermoplastic polymer in polyester family, with C10H8O4 as empirical formula for its monomer.2.It exists in two forms fiber (synthetic) and resin.3.PET is converted into fiber form by permanent press fabric and bottles by b crushed molding.4.Recycling Code 15.PET is not biodegradable and its incineration produces harmful gases which have high potency to air pollution. Thats why recycling it for further use.Properties 1 Density1.38 g/cc (20 )Youngs Modulus2800-3100 MPaTensile Strength55-75 MPaElastic Limit50-100%Glass Transition Temperature67-81Table 1 Properties of Poly-Ethylene Terephthalate.6.Strength and stiffness of PET exists because of the presence of large aromatic sound in the long chains which results in high resistant to deformation too 2.7.PET (waste) used as construction materials Based on visible(prenominal) research in the literature, waste PET (mainly bottles) is recycled in four major waysI.Waste PET bottles depolymerized into unsaturated polyester resin to produce polymer mortar and polymer cover 3.AdvantagesHigher compressive and flexural specialness than normal Portland cement.Modified concrete achieves 80% of its ultimate strength within 1 day.DisadvantagesProperties of change cement sensitive to temperature.Cost for producing this modified concrete is high.II.PET Fiber to reinforce concrete 4.AdvantageEnhances the ductility of quasi-brittle concrete.Reduce the cracking by plastic shrinkage.DisadvantageWater Repellent and low surface energy of plastic which result in weak mechanical bonding b/w fiber and concrete.Poor mechanical bond strength causes internal micro-cracks in the interfacial mechanical... ...s Composites, 21(17) 15971607, 2002.16.A. B. Inceoglu and U. Yilmazer. Synthesis and mechanical properties of unsaturated polyester based nanocomposites. Polym. Eng. Sci., 43(3) 661669, March 2003.17.M. S. Devi, V. Murugesan, K. Rengaraj, and P. Anand. Utilization of flyash as filler for unsatur ated polyester resin. J. Appl. Polymer Sciences, 69(7) 13851391, August 1998.18.A. B. Cherian and E. T. Thachil. Blends of unsaturated polyester resin with functional elastomers. J. Elastomer Plastics, 35(4)367380, October 2003.19.Y. Xu, M. L. Li, Y. Guo, and F. J. Lu. Structure and properties of modified unsaturated polyester resin by nano-TiO2. J. Mater. Sci. Technol., 19(6) 578580, November 2003.20.E. Kicko-Walczak. New ecological polyester resins with reduced flammability and smoke evolution capacity. J. Appl. Polym. Sci., 74(2)379382, October 1999.