Synthesis and characterization of polyesters from glycerol by-product of biodiesel production

Synthesis and characterization of polyesters from glycerol by-product of biodiesel production

Glycerol, a by-product from biodiesel production can react with di-carboxylic organic acids, resulting in polyesters, and can be used in the composition of urea/formaldehyde or phenol/formaldehyde resins to improve the qualities of adhesion and moisture resistance of them. In this work, six kinds of resins derived from glycerol, named as GAA (glycerol/adipic acid), GAAU (glycerol/adipic acid/urea), GAF (glycerol/phtalic acid), GU (glycerol/urea), GUF (glycerol/urea/formaldehyde) and GF (glycerol/formaldehyde), were synthesized. The resins derived from carboxylic acids had better thermal stability (up to 350 ºC) than those derived from formaldehyde (up to 200 ºC). The average molecular weights of the resins were determined by matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) and gel-permeation chromatography (GPC), and are in the range of 1800-2800 Da, being oligomers, and the polydispersity indexes are in the range of 1.3 to 1.8. The ¹H and 13C nuclear magnetic resonance (NMR) techniques were used to identify the structure of the resins.

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Main Authors: Moura,Carla V. Rodarte de, Nunes,Antonia S. L., Moita Neto,Jose M., Neres,Haroldo L. S., Carvalho,Lee M. G. de, Moura,Edmilson M. de
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2012
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700005
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spelling oai:scielo:S0103-505320120007000052012-08-03Synthesis and characterization of polyesters from glycerol by-product of biodiesel productionMoura,Carla V. Rodarte deNunes,Antonia S. L.Moita Neto,Jose M.Neres,Haroldo L. S.Carvalho,Lee M. G. deMoura,Edmilson M. de glycerol resins biodiesel Glycerol, a by-product from biodiesel production can react with di-carboxylic organic acids, resulting in polyesters, and can be used in the composition of urea/formaldehyde or phenol/formaldehyde resins to improve the qualities of adhesion and moisture resistance of them. In this work, six kinds of resins derived from glycerol, named as GAA (glycerol/adipic acid), GAAU (glycerol/adipic acid/urea), GAF (glycerol/phtalic acid), GU (glycerol/urea), GUF (glycerol/urea/formaldehyde) and GF (glycerol/formaldehyde), were synthesized. The resins derived from carboxylic acids had better thermal stability (up to 350 ºC) than those derived from formaldehyde (up to 200 ºC). The average molecular weights of the resins were determined by matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) and gel-permeation chromatography (GPC), and are in the range of 1800-2800 Da, being oligomers, and the polydispersity indexes are in the range of 1.3 to 1.8. The ¹H and 13C nuclear magnetic resonance (NMR) techniques were used to identify the structure of the resins.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.23 n.7 20122012-07-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700005en10.1590/S0103-50532012000700005
institution SCIELO
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country Brasil
countrycode BR
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access En linea
databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Moura,Carla V. Rodarte de
Nunes,Antonia S. L.
Moita Neto,Jose M.
Neres,Haroldo L. S.
Carvalho,Lee M. G. de
Moura,Edmilson M. de
spellingShingle Moura,Carla V. Rodarte de
Nunes,Antonia S. L.
Moita Neto,Jose M.
Neres,Haroldo L. S.
Carvalho,Lee M. G. de
Moura,Edmilson M. de
Synthesis and characterization of polyesters from glycerol by-product of biodiesel production
author_facet Moura,Carla V. Rodarte de
Nunes,Antonia S. L.
Moita Neto,Jose M.
Neres,Haroldo L. S.
Carvalho,Lee M. G. de
Moura,Edmilson M. de
author_sort Moura,Carla V. Rodarte de
title Synthesis and characterization of polyesters from glycerol by-product of biodiesel production
title_short Synthesis and characterization of polyesters from glycerol by-product of biodiesel production
title_full Synthesis and characterization of polyesters from glycerol by-product of biodiesel production
title_fullStr Synthesis and characterization of polyesters from glycerol by-product of biodiesel production
title_full_unstemmed Synthesis and characterization of polyesters from glycerol by-product of biodiesel production
title_sort synthesis and characterization of polyesters from glycerol by-product of biodiesel production
description Glycerol, a by-product from biodiesel production can react with di-carboxylic organic acids, resulting in polyesters, and can be used in the composition of urea/formaldehyde or phenol/formaldehyde resins to improve the qualities of adhesion and moisture resistance of them. In this work, six kinds of resins derived from glycerol, named as GAA (glycerol/adipic acid), GAAU (glycerol/adipic acid/urea), GAF (glycerol/phtalic acid), GU (glycerol/urea), GUF (glycerol/urea/formaldehyde) and GF (glycerol/formaldehyde), were synthesized. The resins derived from carboxylic acids had better thermal stability (up to 350 ºC) than those derived from formaldehyde (up to 200 ºC). The average molecular weights of the resins were determined by matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) and gel-permeation chromatography (GPC), and are in the range of 1800-2800 Da, being oligomers, and the polydispersity indexes are in the range of 1.3 to 1.8. The ¹H and 13C nuclear magnetic resonance (NMR) techniques were used to identify the structure of the resins.
publisher Sociedade Brasileira de Química
publishDate 2012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000700005
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