Synthesis of PC-Ny6 block copolymers as a compatibilizers in Nylon6/Polycarbonate blends (Contributo in atti di convegno)

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Label
  • Synthesis of PC-Ny6 block copolymers as a compatibilizers in Nylon6/Polycarbonate blends (Contributo in atti di convegno) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • S.Battiato, D.Carbone, A.Scamporrino, F.Samperi, C.Puglisi, A.Turturro, M.Castellano (2011)
    Synthesis of PC-Ny6 block copolymers as a compatibilizers in Nylon6/Polycarbonate blends
    in Advances in Polymer based Materials and Related Technologies, Capri -NA
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S.Battiato, D.Carbone, A.Scamporrino, F.Samperi, C.Puglisi, A.Turturro, M.Castellano (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • May 29th - June 1st, 2011. (Conference Proceeding -Poster) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Abstract: PC-Ny block copolymers were prepared by reacting carboxyl-terminated Ny6 polymers (Ny6-COOH) with high molar mass PC at two different temperature (250-260 °C), for different tange time and with or without diphenylsulfone (DPSO) as solvent. The reaction produces block copolymers of the type PC-Ny6 (AB) plus a certain amount of un-converted PC degraded to lower molecular weights. The reaction products were separated by selective fractionation with solvents, obtaining three different fractions: THF soluble fraction (THFSF),TFE soluble fraction (TFE-SF), and the TFE insoluble fraction (TFE-IF). Each fraction has been characterized by NMR and MALDI-TOF MS. All NMR spectra were recorded using CDCl3/(CF3CO)3O (90/10 v/v) mixture as solvent. The MALDI-TOF and NMR spectra of the THF-SF show that it is mainly constituted by unreacted and phenol terminated PC chains. The mass spectrum and 1H-NMR spectrum of the TFE-SF shows only the presence of typical Ny6-carboxyl terminated series of peaks. Both techniques show that all the TFE-IF were constituted of PC-Ny6 block copolymers. Two PC-Ny6 copolymer with a molar composition 80/20 and 70/30 were obtained. As expected, their DSC analysis shows that both block copolymers present two Tg values: at 47°C and 137çC for PC-Ny6 80/20 (Cop82); at 47°C and 131°C for PC-Ny6 70/30 (Copo73), due to the Ny6 and PC blocks, respectively. Blends of Ny6/PC 80/20 (w/w) with 2% phr of one of the two copolymers, as compatibilizers, were mixed in the Brabender mixer (250°C, 30 rpm) under N2 atmosphere for 5 and 10 min. The compatibilizing action of the two block copolymers have been invrstiagted by SEM analysis. SEM micrographies show that compatibilized Ny6/PC (80/20 mol/mol) blends were obtained when were processed in presence of the PC-co-Ny6 block copolymers (2%w). Blend mixed with 2% of PC-co-Ny6 80/20 present the better mechanical properties. (literal)
Titolo
  • Synthesis of PC-Ny6 block copolymers as a compatibilizers in Nylon6/Polycarbonate blends (literal)
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