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Determination of VOCS and oxidated derivates os styrene in recycled styrenic samples using microware extraction and gc-ms analysis

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Determination of VOCS and oxidated derivates os styrene in recycled styrenic samples using microware extraction and gc-ms analysis

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dc.contributor.advisor Vilaplana, Francisco es_ES
dc.contributor.advisor Karlsson, Sigbritt es_ES
dc.contributor.advisor Ribes, Amparo es_ES
dc.contributor.author Clemente Alcodori, Eva es_ES
dc.date.accessioned 2013-12-19T12:50:51Z
dc.date.available 2013-12-19T12:50:51Z
dc.date.created 2008-06
dc.date.issued 2013-12-19
dc.identifier.uri http://hdl.handle.net/10251/34618
dc.description.abstract Consulta en la Biblioteca ETSI Industriales (7808) es_ES
dc.description.abstract [eng] The quality of recycled high impact polystyrene (HIPS) was studied by analyzing the low molecular weight compounds present in it. For that purpose a microwave assisted extraction (MAE) procedure was optimised to extract the interesting compounds from the polymer samples and this extract was analyzed by using gas chromatography-mass spectrometry (GC-MS). The optimal extraction time and extraction temperature using MAE was found by carrying out the extraction at different times and temperatures. The optimal extraction parameters were applied to extract low molecular weight compounds from other recycled, reprocessed and aged HIPS samples. An additional extraction using ultrasounds (UAE) was performed to compare the efficiency of the extraction with the microwaves assisted extraction. Several low molecular weight compounds were found in every sample, both by using MAE and UAE. Styrene was identified already in the virgin HIPS. In addition volatiles, such as benzene,(1-methylethyl); styrene dimers, such as benzene, 1,1'-(1,3-propanediyl)bisand benzene 1,1'(1,2-cyclobutanedyil)bis-,trans-; oxidated derivates of styrene, such as acetophenone and benzaldehyde and some styrene trimers were found. The presence of oxigenated derivates of styrene may be attributed to the oxidation of HIPS. The styrene dimers and trimers are residues of polymerization, and their relative abundance was in general higher for the virgin material, which indicated that emissions of these compounds may have occurred during the first life of the products. es_ES
dc.language Inglés es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Consulta en la Biblioteca ETSI Industriales es_ES
dc.subject Espectrometría es_ES
dc.subject Polímeros es_ES
dc.subject Química orgánica es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.subject.other Ingeniero Químico-Enginyer Químic es_ES
dc.title Determination of VOCS and oxidated derivates os styrene in recycled styrenic samples using microware extraction and gc-ms analysis es_ES
dc.type Proyecto/Trabajo fin de carrera/grado es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials es_ES
dc.description.bibliographicCitation Clemente Alcodori, E. (2008). Determination of VOCS and oxidated derivates os styrene in recycled styrenic samples using microware extraction and gc-ms analysis. http://hdl.handle.net/10251/34618. es_ES
dc.description.accrualMethod Archivo delegado es_ES


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