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TITLE:
Comparació de l'índex de groc de diferents polietilens i polipropilens en grança i placa mesurats en dos espectrofotòmetres color-view BYK-GARDNER - TFG:303
Handle: https://hdl.handle.net/20.500.11797/TFG303

Student:Nadal Lozano, Joan Carles
Language:cat
Title in original language:Comparació de l'índex de groc de diferents polietilens i polipropilens en grança i placa mesurats en dos espectrofotòmetres color-view BYK-GARDNER
Title in different languages:Yellow index comparison of different polyethylene and polypropylene in pellets and plaque measured in two spectrophotometers color-view BYK-Gardner
Keywords:yellow index, polymer, spectrophotometer color-view BYK-Gardner
Subject:Polietilè
Abstract:The work is based on the comparison of the yellow index for high and low density polyethylene and polypropylene in pellets and plaque measured in two spectrophotometers color-view BYK-Gardner, called instruments 26006 and 26003. The measurements are performed both for intermediate products and final products. Two methods, compression and injection, have been used to obtain the plaques for the measurement. When measuring the yellow index of polymers the interday reproducibility was very good, which means that the polymers are stable over time. Results show that in the intermediate products, polypropylene homopolymers (PP) have the biggest difference between measurements from spectrophotometers of all polymers measured in pellets and plaque. However, for high density polyethylene (HDPE) and polypropylene heterophasic (PB) differences are lower. For final products, injection method to obtain the plaques provides very low differences between both instruments, but has the disadvantage of a longer time to obtain the plaques.
Project director:Marcé Recasens, Rosa Maria
Work's codirector:Navarro Garcia, Jose Manuel
Department:Química Analítica i Química Orgànica
Education area(s):Química
Entity:Universitat Rovira i Virgili (URV)
TFG credits:12
Creation date in repository:2015-10-15
Work's public defense date:2015-07-08
Academic year:2014-2015
Confidenciality:No
Subject areas:Chemistry
Access rights:info:eu-repo/semantics/openAccess
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