000			01818nam a2200229Ia 4500
003			MX-MdCICY
005			20250625124646.0
040			_cCICY
090			_aB-6628
245	1	0	_aEmission of possible odourous low molecular weight compounds in recycled biofibre/polypropylene composites monitored by head-space SPME-GCeMS
490	0		_vPolymer Degradation and Stability, 90(3), p.555-562, 2005
520	3		_aA disadvantage of the use of natural fibres to reinforce polypropylene is their poor thermal stability, which results in their degradation at processing temperatures of the composites. As a result of this, there is a formation of low molecular weight compounds that are responsible for undesirable odours. Head-space-solid phase microextraction (HS-SPME)was used as a sample preparation technique and gas chromatographyemass spectrometry (GCeMS)was used to identify the low molecular weight compounds in natural polypropylene/polypropylene composites after simulating degradation. Among the compounds found in the samples, there are fragments of PP chains as heptadecane, compounds from antioxidants such as 2,4-bis(1,1-dimethylethyl)-phenol, and p-tert-butylphenol, and compounds from biofibres ageing, such as ethylparaben and vanillin. Numerous carboxylic acids were also identified, being these most probably the source of the undesirable odours.
650	1	4	_aSOLID PHASE MICROEXTRACTION
650	1	4	_aPOLYPROPYLENE/CELLULOSE COMPOSITES
650	1	4	_aTHERMAL DEGRADATION
700	1	2	_aEspert, A.
700	1	2	_ade las Heras, L.A.
700	1	2	_aKarlsson, S.
856	4	0	_uhttps://drive.google.com/file/d/1bpo5zN-PRCH225-RfX3u6MqRdfhE2XT6/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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