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Química Nova

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BANNACH, Gilbert et al. Effects of the thermal history on thermal properties of polymers: an experiment for thermal analysis education. Quím. Nova [online]. 2011, vol.34, n.10, pp.1825-1829. ISSN 0100-4042.

Polyethilenetherephtalate (PET) is commonly used in manufacturing of beverage bottles representing a didactic appeal in thermal analysis education due to its presence in the student's day life. Additionally such polymer presents well defined thermal analytical curves and a well known thermal behavior. TGA curve is used to present the thermal stability. The thermal history effects in the thermal properties of a PET sample from a soft drink bottle are used to demonstrate the effect of different heating/cooling conditions on glass transition, melting, crystallization and crystalline degree using DSC curves.

Keywords : thermal analysis education; polymers, PET.

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