RT Journal Article
T1 Clay-induced degradation during the melt reprocessing of waste polycarbonate
A1 Orden Hernández, María Ulagares De La
A1 Pascual, Davinia
A1 Muñoz San Martín, Cristina
A1 Lorenzo Esteban, Vicente
A1 Martínez Urreaga, Joaquín
AB The addition of small amounts of organoclays during the reprocessing of waste polycarbonates (WPCs) is a promising method for improving the properties of the recycled plastics. However, the clays can also induce the degradation of the polymer during the melt compounding and thus lower the properties of the final materials. This clay-induced degradation of polycarbonate (PC) was examined in this study. A WPC, a virgin PC (VPC) (that served as a comparison), and two commercial montmorillonites, Cloisite 15A and Cloisite 30B, were melt compounded in a twin-screw microextruder. The degradation of the polymer, which caused the formation of phenolic compounds and the reduction of the average molar mass, was monitored with UV spectroscopy, thermogravimetric (TG) analysis, and solution viscosimetry. The results reveal that the effect of the clays on the degradation depended on the amount of clay used and the chemical nature of the organic modification. When small amounts of the appropriate clay were used, the polymer degradation was minimized, and a net improvement of some properties of the recycled PC was achieved.
PB John Wiley & Sons, Ltd
SN 1097-4628
YR 2014
FD 2014-03-05
LK https://hdl.handle.net/20.500.14352/34618
UL https://hdl.handle.net/20.500.14352/34618
LA eng
NO Publicado online: 16 de octubre de 2013
NO Ministerio de Ciencia e Innovación
NO Comunidad de Madrid
NO Cátedra Repsol-Universidad Politécnica de Madrid
DS Docta Complutense
RD 7 abr 2025