A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Montmorillonite–phenolic resin nanocomposites prepared by one-step in-situ intercalative polymerisation
Abstract Montmorillonite (Mt) resol, and Mt–novolac nanocomposites were prepared by one-step in-situ intercalative polymerisation involving the simultaneous modification of the Mt with quaternary ammonium salts (QAS), polymerisation and polymer intercalation. The Mt–polymer nanocomposites were prepared using two types of QAS — with one long (C16) alkyl chain (cetyl trimethylammonium bromide) or with three medium-sized (C8) alkyl chains (tricaprylyl methylammonium chloride) — as well as without a QAS. Intercalated Mt–resol, and Mt–novolac nanocomposites were formed, as confirmed by XRD and STEM. The extent of the intercalation was higher in the Mt–resol nanocomposites and with the cetyl trimethylammonium bromide modified Mt. The presence of the Mt influenced the polymerisation process, which resulted in changes in the molecular structure of the novolac resin, an increased content of p–p linkages and a lower glass transition temperature of the resin.
Graphical abstract Display Omitted
Highlights Nanocomposites Mt-phenolic resin are prepared in one-step in situ polymerisation. Pristine Mt can be used to produce intercalated nanocomposites Mt-phenolic resin. Mt influences the structure and thermal properties of novolac resin. Mt strongly favours p-p type novolak formation, which has not been observed before.
Montmorillonite–phenolic resin nanocomposites prepared by one-step in-situ intercalative polymerisation
Abstract Montmorillonite (Mt) resol, and Mt–novolac nanocomposites were prepared by one-step in-situ intercalative polymerisation involving the simultaneous modification of the Mt with quaternary ammonium salts (QAS), polymerisation and polymer intercalation. The Mt–polymer nanocomposites were prepared using two types of QAS — with one long (C16) alkyl chain (cetyl trimethylammonium bromide) or with three medium-sized (C8) alkyl chains (tricaprylyl methylammonium chloride) — as well as without a QAS. Intercalated Mt–resol, and Mt–novolac nanocomposites were formed, as confirmed by XRD and STEM. The extent of the intercalation was higher in the Mt–resol nanocomposites and with the cetyl trimethylammonium bromide modified Mt. The presence of the Mt influenced the polymerisation process, which resulted in changes in the molecular structure of the novolac resin, an increased content of p–p linkages and a lower glass transition temperature of the resin.
Graphical abstract Display Omitted
Highlights Nanocomposites Mt-phenolic resin are prepared in one-step in situ polymerisation. Pristine Mt can be used to produce intercalated nanocomposites Mt-phenolic resin. Mt influences the structure and thermal properties of novolac resin. Mt strongly favours p-p type novolak formation, which has not been observed before.
Montmorillonite–phenolic resin nanocomposites prepared by one-step in-situ intercalative polymerisation
Huskić, Miroslav (author) / Anžlovar, Alojz (author) / Žigon, Majda (author)
Applied Clay Science ; 101 ; 484-489
2014-09-10
6 pages
Article (Journal)
Electronic Resource
English
Clay , Montmorillonite , Nanocomposite , Novolac , Resol , Glass transition
| British Library Online Contents | 2008
| British Library Online Contents | 2014
| British Library Online Contents | 2007