Ionic Liquid-Nanostructured Poly(Methyl Methacrylate).
PMMA
crazing
ionic liquids
mechanical behavior
plasticizer
thermal behavior
Journal
Nanomaterials (Basel, Switzerland)
ISSN: 2079-4991
Titre abrégé: Nanomaterials (Basel)
Pays: Switzerland
ID NLM: 101610216
Informations de publication
Date de publication:
26 Sep 2019
26 Sep 2019
Historique:
received:
04
09
2019
revised:
20
09
2019
accepted:
21
09
2019
entrez:
29
9
2019
pubmed:
29
9
2019
medline:
29
9
2019
Statut:
epublish
Résumé
Here, ionic liquids (ILs) based on imidazolium and ammonium cations were used as modifying agents for poly(methyl methacrylate) (PMMA) by extrusion. The effects of the chemical nature of the cation and/or counter anion on the resulting properties of IL-modified PMMA blends were analyzed. It was found that the use of low amounts of ILs (2 wt.%) improved the thermal stability. A plasticizing effect of ILs is evidenced by a decrease in glass transition temperature Tg of the modified PMMA, allowing to get large strains at break (i.e., up to 280% or 400%) compared to neat PMMA. The deformation and fracture mechanisms of PMMA under uniaxial tensile stress (i.e., crazing) reveal that the presence of IL delayed the strain during the initiation step of crazing.
Identifiants
pubmed: 31561407
pii: nano9101376
doi: 10.3390/nano9101376
pmc: PMC6835392
pii:
doi:
Types de publication
Journal Article
Langues
eng
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