scholarly journals Glass transition and nonlinear mechanical behavior of poly (methyl methacrylate)/carbon nanotubes nanocomposites: A molecular dynamics study

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
◽  
◽  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Glass Transition ◽  
Methyl Methacrylate ◽  
Mechanical Behavior ◽  
Poly Methyl Methacrylate ◽  
Nonlinear Mechanical

Large Strain Mechanical Behavior of Poly(methyl methacrylate) (PMMA) Near the Glass Transition Temperature

2006 ◽  
Vol 128 (4) ◽  
pp. 559-563 ◽  
Author(s):  
G. Palm ◽  
R. B. Dupaix ◽  
J. Castro
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Methyl Methacrylate ◽  
Mechanical Behavior ◽  
Strain Hardening ◽  
Uniaxial Compression ◽  
Large Strain ◽  
Strain Rates ◽  
Poly Methyl Methacrylate

The mechanical behavior of amorphous thermoplastics, such as poly(methyl methacrylate) (PMMA), strongly depends on temperature and strain rate. Understanding these dependencies is critical for many polymer processing applications and, in particular, for those occurring near the glass transition temperature, such as hot embossing. In this study, the large strain mechanical behavior of PMMA is investigated using uniaxial compression tests at varying temperatures and strain rates. In this study we capture the temperature and rate of deformation dependence of PMMA, and results correlate well to previous experimental work found in the literature for similar temperatures and strain rates. A three-dimensional constitutive model previously used to describe the mechanical behavior of another amorphous polymer, poly(ethylene terephthalate)-glycol (PETG), is applied to model the observed behavior of PMMA. A comparison with the experimental results reveals that the model is able to successfully capture the observed stress-strain behavior of PMMA, including the initial elastic modulus, flow stress, initial strain hardening, and final dramatic strain hardening behavior in uniaxial compression near the glass transition temperature.

Amorphous and Semicrystalline Blends of Poly(vinylidene fluoride) and Poly(methyl methacrylate): Characterization and Modeling of the Mechanical Behavior

2011 ◽  
Vol 134 (1) ◽  
Author(s):  
J. L. Halary ◽  
J. Jarray ◽  
M. Fatnassi ◽  
F. Ben Cheikh Larbi
Keyword(s):  
Glass Transition ◽  
Methyl Methacrylate ◽  
Mechanical Behavior ◽  
Vinylidene Fluoride ◽  
Degree Of Crystallinity ◽  
Poly Methyl Methacrylate ◽  
Strain Behavior ◽  
Blend Composition ◽  
Poly Vinylidene Fluoride ◽  
Reported Data

After extensive studies starting in the 1970s in relation to miscibility and piezoelectric properties, the blends of poly(vinylidene fluoride) (PVDF) and poly(methyl methacrylate) (PMMA) have been revisited with the aim of assessing their mechanical behavior. Depending on the amount of PVDF, either amorphous or semicrystalline blends are produced. Typically, the blends remain amorphous when their PVDF content does not exceed 40 wt. %. Blend composition influence on the values of the glass transition temperature, Tg, and on its mechanical expression, Tα, is extensively discussed. Then, emphasis is put on the stress-strain behavior in tension and compression over the low deformation range covering the elastic, anelastic, and viscoplastic response. The reported data depend, as expected, on temperature and strain rate and also, markedly, on blend composition and degree of crystallinity. Molecular arguments, based on the contribution of the glass transition motions are proposed to account for the observed behavior. Thanks to the understanding of phenomena at the molecular level, accurate models can be selected in the view of mechanical modeling.

Glass transition and crystallization of poly(vinyl alcohol)-g-poly(methyl methacrylate) graft copolymers

Polymer ◽  
1994 ◽  
Vol 35 (14) ◽  
pp. 3122-3126 ◽  
Author(s):  
Yingming Yao ◽  
Lizhi Liu ◽  
Hong Li ◽  
Tianru Fang ◽  
Enle Zhou
Keyword(s):  
Glass Transition ◽  
Methyl Methacrylate ◽  
Vinyl Alcohol ◽  
Graft Copolymers ◽  
Poly Vinyl Alcohol ◽  
Poly Methyl Methacrylate

Effect of Concentration on the Glass Transition and Viscoelastic Properties of Poly(methyl methacrylate)/Ionic Liquid Solutions

2011 ◽  
Vol 44 (4) ◽  
pp. 1016-1025 ◽  
Author(s):  
Michelle M. Mok ◽  
Xingcheng Liu ◽  
Zhifeng Bai ◽  
Yu Lei ◽  
Timothy P. Lodge
Keyword(s):  
Ionic Liquid ◽  
Glass Transition ◽  
Methyl Methacrylate ◽  
Viscoelastic Properties ◽  
Poly Methyl Methacrylate ◽  
Liquid Solutions

Thermal properties of single walled carbon nanotubes composites of polyamide 6/poly(methyl methacrylate) blend system

2013 ◽  
Vol 115 (1) ◽  
pp. 345-354 ◽  
Author(s):  
Katakam Madhukar ◽  
Annadanam V. Sesha Sainath ◽  
Nampally Bikshamaiah ◽  
Yekkala Srinivas ◽  
Nandru M. Babu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Methyl Methacrylate ◽  
Single Walled Carbon Nanotubes ◽  
Polyamide 6 ◽  
Poly Methyl Methacrylate ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Mechanical behavior of poly(methyl methacrylate)-based ionogels

Soft Matter ◽  
2014 ◽  
Vol 10 (40) ◽  
pp. 7993-8000 ◽  
Author(s):  
Mingyu Li ◽  
Jianyu Li ◽  
Hui Na ◽  
Joost J. Vlassak
Keyword(s):  
Methyl Methacrylate ◽  
Mechanical Behavior ◽  
Fracture Energy ◽  
Cross Link ◽  
Poly Methyl Methacrylate ◽  
Link Density ◽  
Cross Link Density ◽  
The Cross ◽  
The Ideal

We demonstrate that the fracture energy of ionogels correlates inversely with the cross-link density. The behavior of ionogels is well captured by the ideal elastomeric gel model.

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