Characterization of suspension poly(vinyl chloride) resins and narrow polystyre...

• Autor(es): Coelho, Jorge F. J. ; Gonçalves, Pedro M. F. O. ; Miranda, Dionísio ; Gil, M. H.
• Data: 2006
• Identificador Persistente: http://hdl.handle.net/10316/3794
• Origem: Estudo Geral - Universidade de Coimbra
• Assunto(s): Multi-detector size exclusion chromatography
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

This work reports the utilization of a multi-detector size chromatography for the characterization of poly(vinyl chloride) (PVC) resins prepared by suspension polymerization in the range of temperatures between 21 and 75 °C. The chromatography equipment offers the possibility of analyzing the samples in terms of their absolute molecular mass using a combination of three detectors (TriSEC): right angle light scattering (RALLS), a differential viscometer (DV) and refractive index (RI). The PVC resins were fully characterized concerning the molecular weight distribution (MWD), its dependence with intrinsic viscosity ([eta]) and molecular sizes (radius of gyration, Rg and hydrodynamic radius, Rh). Additionally, it is also presented the characterization of polystyrene narrow standards serving as reference polymers. http://www.sciencedirect.com/science/article/B6TWW-4HHGNVH-4/1/170871b80274a89470f2a790d3ed999f