Author, as appears in the article.: Shiravand F., Hutchinson J., Calventus Y., Ferrando F.

Department: Enginyeria Mecànica

e-ISSN: 1996-1944

URV's Author/s: Ferrando Piera, Francesc

Keywords: Pre-conditioning Nanostructure Nanocomposite Montmorillonite Mechanical properties Layered silicate Homopolymerisation Exfoliation Epoxy Differential scanning calorimetry nanostructure nanocomposite montmorillonite mechanical properties layered silicate homopolymerisation exfoliation epoxy differential scanning calorimetry

Abstract: Three different protocols for the preparation of polymer layered silicate nanocomposites based upon a tri-functional epoxy resin, triglycidyl para-amino phenol (TGAP), have been compared in respect of the cure kinetics, the nanostructure and their mechanical properties. The three preparation procedures involve 2 wt% and 5 wt% of organically modified montmorillonite (MMT), and are: isothermal cure at selected temperatures; pre-conditioning of the resin-clay mixture before isothermal cure; incorporation of an initiator of cationic homopolymerisation, a boron tri-fluoride methyl amine complex, BF3·MEA, within the clay galleries. It was found that features of the cure kinetics and of the nanostructure correlate with the measured impact strength of the cured nanocomposites, which increases as the degree of exfoliation of the MMT is improved. The best protocol for toughening the TGAP/MMT nanocomposites is by the incorporation of 1 wt% BF3·MEA into the clay galleries of nanocomposites containing 2 wt% MMT. © 2014 by the authors.

Thematic Areas: Química Odontología Medicina veterinaria Medicina i Materials science, multidisciplinary Materiais Interdisciplinar General materials science Engenharias iv Engenharias iii Engenharias ii Engenharias i Condensed matter physics Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Astronomia / física Arquitetura, urbanismo e design

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 19961944

Author's mail: f.ferrando@urv.cat

Author identifier: 0000-0003-4450-2734

Last page: 4223

Record's date: 2023-03-05

Journal volume: 7

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/1996-1944/7/6/4196

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Materials. 7 (6): 4196-4223

APA: Shiravand F., Hutchinson J., Calventus Y., Ferrando F. (2014). Comparison of the nanostructure and mechanical performance of highly exfoliated epoxy-clay nanocomposites prepared by three different protocols. Materials, 7(6), 4196-4223. DOI: 10.3390/ma7064196

Article's DOI: 10.3390/ma7064196

Entity: Universitat Rovira i Virgili

Journal publication year: 2014

First page: 4196

Publication Type: Journal Publications