It therefore belongs to the class of polymers known as polyesters. Petroleum-derived (petro-)polymers such as polyethylene (PE), polyethylene terephthalate (PET), polyurethane (PU), polystyrene (PS), polypropylene (PP), and polyvinyl chloride (PVC) are extremely recalcitrant to natural biodegradation pathways. The chemical structure of polyethylene terephthalate (PET) consists of alternating ethylene glycolate and terephthalate subunits, linked via ester bonds. The final properties of the reinforced polymer are controlled in part by the morphology and the eventual molecular orientation of the polymer matrix. Solution: Polyethylene terephthalate commonly abbreviated . D. Polyester. Polyester is a category of polymers that contain the ester functional group in their main chain. Among these thermoplastic polymers, polyethylene terephthalate (PET) is a very important engineering thermoplastic polyester because of its excellent chemical resistance, good mechanical and thermal properties, as well as excellent optical and barrier properties, which make PET an ideal candidate for use as beverage bottle applications, that are increasingly, replacing glass bottles. Answer: (D) Polyester. PET is a ... Polyethylene terephthalate belongs to which class of synthetic polymer? [4] They arise from the reaction of carboxylic acid and an alcohol. Polyethylene terephthalate (PET) is one of the major plastics, in addition to polyethylene, polypropylene, polystyrene, polyvinyl chloride, and polyurethane, and its worldwide production amounted to 56 million tons in 2013 (Neufeld et al. Polyethylene terephthalate (PET)-based blends are regraded as very special class of polymer blends; this is due to their multifunctional applications. One approach to improve polymer biodegradation in wastewater would be to complement current processes with polyester‐hydrolyzing enzymes and their microbial producers. PET has various applications, such as in manufacturing bottles, fibers, films, and containers. Polyethylene Terephthalate (PET). Examples include polyesters, e.g. polyethyleneterephthalate: n HO-X … The PET monomer is designated bis(2-hydroxyethyl) terephthalate (BHET) (14). One important class of condensation polymers are polyesters. ... Polymers can be both natural and synthetic (c) Polymer is a natural substance (d) Polymer is a synthetic substance. PET is a polar, linear polymer of repeating units of the aromatic terephthalic acid and ethylene glycol. None of these. Polyethylene Terephthalate and Other Polyesters. PET or PETE . B. Polyolefin. Synthetic polyesters are today the second‐largest class of ingredients in household products and are entering wastewater treatment plants (WWTPs) after product utilization. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). A. In the natural environment, PET can degrade by thermal oxidation, but hydrolytic cleavage Polyester is a category of polymers, in which ester is the Synthetic plastics are pivotal in our current lifestyle and therefore, its accumulation is a major concern for environment and human health. 2016). As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). is a member of the polyester family of polymers. Class 8 Science Chapter 3 Synthetic Fibres and Plastics MCQ (Multiple Choice Questions) with Answers is available here in PDF format. Polyethylene terephthalate belongs to which class of synthetic polymer? C. Nylon. Polyesters include naturally occurring chemicals, such as in the cutin of plant cuticles, as well as synthetics such as polybutyrate. Polyester is a category of polymers that contain the ester functional group in their main chain. 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