Ionic Liquid-Nanostructured Poly(Methyl Methacrylate)

被引：15

作者：

Fedosse Zornio, Clarice ^{[1
]}

Livi, Sebastien ^{[1
]}

Duchet-Rumeau, Jannick ^{[1
]}

Gerard, Jean-Francois ^{[1
]}

机构：

[1] Univ Lyon, Ingn Mat Polymeres, CNRS, UMR 5223,INSA Lyon, F-69621 Villeurbanne, France

来源：

NANOMATERIALS | 2019年 / 9卷 / 10期

关键词：

ionic liquids; PMMA; plasticizer; mechanical behavior; crazing; thermal behavior; THERMAL-DEGRADATION; MECHANICAL-PROPERTIES; SILICA NANOPARTICLES; PHOSPHONIUM; PMMA; PLASTICIZERS; TEMPERATURE; ANION; NANOCOMPOSITES; REINFORCEMENT;

D O I：

10.3390/nano9101376

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页数：16

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