المستودع الأكاديمي جامعة المدينة

The photoacoustic spectroscopy applied in the characterization of the cross-linking process in polymeric materials

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dc.creator Dias D. T.
dc.creator Medina A. N.
dc.creator Baesso M. L.
dc.creator Bento A. C.
dc.creator Porto M. F.
dc.creator Rubira A. F.
dc.date 2002
dc.date.accessioned 2013-06-01T09:20:51Z
dc.date.available 2013-06-01T09:20:51Z
dc.date.issued 2013-06-01
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332002000300011
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2002&volume=32&issue=2b&spage=523
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/7784
dc.description In this work we used the Photoacoustic Spectroscopy (PAS) to evaluate the crosslinking of the copolymer from ethylene vinyl trimethoxysilane (EVS) and the grafted vinyl trimethoxysilane (VTS) on low density polyethylene (LDPE). PAS is used for sounding the overtone bands and stretching frequencies combinations of the groupings -Si-OH, =CH2, -CH3 and -CH2 -CH3, in the near and medium infrared range. The samples were typically prepared with 3%, 5% and 7% of catalyst and crosslinked in the temperatures of 70, 80 and 90ºC. Using the overtone bands of -OH groups the PAS shows the optimum combination, pointing a better crosslinking effect for 80ºC and in the range 5% to 7% of catalyst, typically.
dc.publisher Sociedade Brasileira de Física
dc.source Brazilian Journal of Physics
dc.title The photoacoustic spectroscopy applied in the characterization of the cross-linking process in polymeric materials


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