Spectral and thermal studies on the synthesis and catalyzed oligomerization of novel cardanol-based benzoxazines

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Abstract

The aim of this study was to synthesize novel cardanol-based benzoxazines, using different primary amines, and evaluate their influences on the synthesis and polymerization process. The monomers were characterized using NMR (1H and 13C), FT-IR, DSC and TGA. It was demonstrated how the amines structures influence on the stability of the oxazine ring, which relates to the onset polymerization temperature (Te). Aniline-type benzoxazines provided higher Te than aliphatic ones. Since at this elevate temperature (230-295°C) the alkyl chain of cardanol could degrade, the use of a new catalyst was also evaluated, showing the innocuous MgCl2 as an efficient alternative. The polymerization of these monomers with MgCl2 (1%) were studied using FT-IR, DSC and GPC, showing that under mild temperatures it is possible to obtain polybenzoxazines completely soluble and with high polydispersity.

Autore Pugliese

Tutti gli autori

  • Kotzebue L.R.V. , Ribeiro F.W.M. , Sombra V.G. , Feitosa J. P.A. , Mele G. , Mazzetto S.E. , Lomonaco D.

Titolo volume/Rivista

POLYMER

Anno di pubblicazione

2016

ISSN

0032-3861

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

9

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile