Controlled synthesis of crosslinked polyamide 6 using a bis-monomer derived from cyclized lysine
DEFFIEUX, Alain
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
CARLOTTI, Stéphane
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Polymer. 2014, vol. 55, n° 23, p. 5991-5997
Elsevier
Résumé en anglais
The controlled synthesis of polyamide 6 chemical networks by anionic ring-opening copolymerization of epsilon-caprolactam (CL) with synthesized bis-epsilon-caprolactam derived from alpha-amino-epsilon-caprolactam, i.e. ...Lire la suite >
The controlled synthesis of polyamide 6 chemical networks by anionic ring-opening copolymerization of epsilon-caprolactam (CL) with synthesized bis-epsilon-caprolactam derived from alpha-amino-epsilon-caprolactam, i.e. N-functionalized alpha-amino-epsilon-caprolactam bis-monomers, using sodium epsilon-caprolactamate as an initiator and hexamethylene-1,6-dicarbamoylcaprolactam as di-functional fast activator was examined in bulk at 140 degrees C. An urea-based bis-monomer and CL were first shown to copolymerize with a decreasing polymerization rate due to side reactions. On the contrary, quantitative copolymerization of CL with various amounts of bis-N(2-oxo-3-azepanyl)-1,6-tetramethylenediamide, an amide-based bis-monomer, leads to fast kinetics similar to the homopolymerization of CL Crosslinked PA6 with network exhibiting elastic or viscoelastic behaviors, depending on the amount of crosslinker, were observed and characterized by swelling in hexafluoroisopropanol, dynamic mechanical analysis and rheology measurements. Crystallinity and swelling were shown to decrease with the increasing content of the crosslinking agent.< Réduire
Mots clés en anglais
LACTAMS
RIM
Anionic ring-opening polymerization
alpha-Amino-epsilon-caprolactam
ACTIVATED ANIONIC-POLYMERIZATION
RING-OPENING POLYMERIZATION
EPSILON-CAPROLACTAM
6-CAPROLACTAM
Origine
Importé de halUnités de recherche