Mechanical performance, water absorption behavior and biodegradability of poly(methyl methacrylate)-modified starch/SBR biocomposites

2013 ◽  
Vol 21 (7) ◽  
pp. 793-800 ◽  
Author(s):  
Mei-Chun Li ◽  
Xin Ge ◽  
Ur Ryong Cho
Keyword(s):  
Methyl Methacrylate ◽  
Water Absorption ◽  
Mechanical Performance ◽  
Modified Starch ◽  
Poly Methyl Methacrylate

Micromechanical analysis of effective mechanical properties of graphene/ZrO2-hybrid poly (methyl methacrylate) nanocomposites

2021 ◽  
pp. 251659842110388
Author(s):  
Ankit Rathi ◽  
S. I. Kundalwal
Keyword(s):  
Methyl Methacrylate ◽  
Elastic Properties ◽  
Mechanical Performance ◽  
Volume Fraction ◽  
Element Model ◽  
Two Phase ◽  
Effective Elastic Properties ◽  
Poly Methyl Methacrylate ◽  
Three Phase ◽  
Effective Mechanical Properties

In this study, the tensile properties of two-phase and three-phase graphene/ZrO2-hybrid poly (methyl methacrylate) (PMMA) nanocomposites are investigated by developing finite element model using ANSYS. Primarily, the effective elastic properties of two- and three-phase graphene/ZrO2-hybrid PMMA nanocomposites (GRPCs) are estimated by developing mechanics of material (MOM) model. Results indicated that the effective elastic properties of GRPCs increase with an increase in the volume fraction of graphene. Also, the stiffness of GRPCs is increased by 78.12% with increasing in the volume fraction of graphene from 0.1 to 0.5 Vf. The incorporation of an additional ZrO2 interphase significantly improved the mechanical performance of resulting GRPCs.

Diffusion and solubility of commercial poly(methyl methacrylate) denture base material modified with dimethyl itaconate and di-n-butyl itaconate during water absorption/desorption cycles

2012 ◽  
Vol 61 (8) ◽  
pp. 1272-1278 ◽  
Author(s):  
Pavle Spasojević ◽  
Dragoslav Stamenković ◽  
Rada Pjanović ◽  
Nevenka Bošković-Vragolović ◽  
Jelena Dolić ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Water Absorption ◽  
Base Material ◽  
Denture Base ◽  
Poly Methyl Methacrylate ◽  
Dimethyl Itaconate

Novel Molecular Spectroscopic Multimethod Approach for Monitoring Water Absorption/Desorption Kinetics of CAD/CAM Poly(Methyl Methacrylate) Prosthodontics

2016 ◽  
Vol 71 (7) ◽  
pp. 1600-1612 ◽  
Author(s):  
Verena Wiedemair ◽  
Sophia Mayr ◽  
Daniel S. Wimmer ◽  
Eva Maria Köck ◽  
Simon Penner ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Water Absorption ◽  
Desorption Kinetics ◽  
Poly Methyl Methacrylate ◽  
Cad Cam ◽  
Multimethod Approach ◽  
Kinetics Of

Water Absorption and Mechanical Properties of Cements Based on Poly (Methyl Methacrylate) (PMMA) as Function of Hydroxyapatite (HA) Content

2008 ◽  
Vol 396-398 ◽  
pp. 493-496
Author(s):  
D. Ionita ◽  
G. Tihan ◽  
A.T. Marques
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Methyl Methacrylate ◽  
Water Absorption ◽  
Mechanical Characterization ◽  
Setting Time ◽  
Young Modulus ◽  
Point Of View ◽  
Maximum Strength ◽  
Poly Methyl Methacrylate

The purpose of this study is the obtaining of different orthopedic materials and chemical and mechanical characterization. The chemical tests used were setting time, water absorption and from the point of view of mechanical properties the Young modulus, compressive strength, and maximum strength. Also, the surface of orthopedic bioceramics materials was characterized by porosity test.

scholarly journals Chemical Modification of Cellulose Microfibres to Reinforce Poly(methyl methacrylate) Used for Dental Application

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3807 ◽  
Author(s):  
Joanna Taczała ◽  
Jacek Sawicki ◽  
Joanna Pietrasik
Keyword(s):  
Methyl Methacrylate ◽  
Mechanical Performance ◽  
Average Length ◽  
General Procedure ◽  
Dental Materials ◽  
Poly Methyl Methacrylate ◽  
Active Filler ◽  
The Matrix ◽  
Dental Acrylic ◽  
Good Potential

The mechanical properties of dental acrylic resins have to be improved in the case of a thin denture plate. This can be achieved by cellulose addition, playing the role of active filler. But to provide the excellent dispersion of cellulose microfibres within the hydrophobic polymer matrix, its surface has to be modified. Cellulose microfibres with average length from 8 to 30 μm were modified with octyltriethoxysilane and (3-methacryloxypropyl)methyldimethoxysilane. The latter also participated in the polymerisation reaction of methyl methacrylate. Dental composites were prepared following the general procedure provided by the supplier. The successful modification of the microfibres led to the improved compatibility of the cellulose and poly(methyl methacrylate). The fibres after modification were uniformly distributed within the matrix, resulting in the improved mechanical performance of obtained materials. Cellulose microfibres are good candidates for the dental materials to be used as the active filler. The simple and straightforward approach for the cellulose modifications with silanes provides good potential for its future practical application.

scholarly journals Effect of nano- and micro-alumina fillers on some properties of poly(methyl methacrylate) denture base composites

2018 ◽  
Vol 83 (1) ◽  
pp. 75-91 ◽  
Author(s):  
Fathie Kundie ◽  
Che Azhari ◽  
Zainal Ahmad
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Fracture Toughness ◽  
Methyl Methacrylate ◽  
Water Absorption ◽  
Nano Particles ◽  
Nano Composites ◽  
Al2o3 Nanoparticles ◽  
Denture Base ◽  
Poly Methyl Methacrylate

This research investigated the effects of alumina (Al2O3) micro- and nano-particles on poly(methyl methacrylate) (PMMA) denture base. Al2O3 was surface treated using (3-methacryloxypropyl)trimethoxysilane (?-MPS), added to methyl methacrylate (MMA), and mixed with PMMA powder. The filler volume fractions in the micro-composites were 0.5, 1, 2, 5 and 7 wt. %, whereas those in the nano-composites were 0.13, 0.25, 0.5, 1, 2 and 5 wt. %. The treated fillers were examined using Fourier transform infrared spectroscopy (FTIR). The influence of filler size and loading on mechanical properties was studied using fracture toughness and flexural tests. The thermal stability of the PMMA/Al2O3 composites was investigated using thermogravimetric analysis (TGA). In addition, the water absorption and solubility characteristic of the prepared composites was also investigated. The FTIR spectra showed new absorption bands, indicating the occurrence of surface modifications. Both micro- and nanoscale particles showed increased fracture toughness. The maximum value of 2.02 MPa?m1/2 was achieved with the addition of 0.5 wt. % nano-Al2O3, which accounts for a 39 % increase. In contrast to the flexural strength, the flexural modulus improved with increasing filler content. The micro-composites showed higher thermal stability than nano-composites. The water absorption and solubility of the prepared composites were slightly higher than those of the control. The use of low concentrations of Al2O3 nanoparticles may be of considerable interest in future studies to improve the mechanical properties of PMMA denture base.

Water Absorption of Poly(methyl methacrylate) Measured by Vertical Interference Microscopy

Langmuir ◽  
2012 ◽  
Vol 28 (31) ◽  
pp. 11609-11614 ◽  
Author(s):  
Mambaye N’Diaye ◽  
Florence Pascaretti-Grizon ◽  
Philippe Massin ◽  
Michel Felix Baslé ◽  
Daniel Chappard
Keyword(s):  
Methyl Methacrylate ◽  
Water Absorption ◽  
Interference Microscopy ◽  
Poly Methyl Methacrylate

Monitoring water absorption of medically used PMMA using NIR

NIR news ◽  
2017 ◽  
Vol 28 (4) ◽  
pp. 10-13
Author(s):  
Verena Wiedemair ◽  
Christian Wolfgang Huck
Keyword(s):  
Methyl Methacrylate ◽  
Water Absorption ◽  
Nir Spectroscopy ◽  
Computer Assisted ◽  
Calibration Model ◽  
Poly Methyl Methacrylate ◽  
Computer Assisted Design ◽  
Upper Jaw

Poly(methyl-methacrylate)-based full dentures for the upper jaw, which were produced using computer-assisted design/computer-assisted manufacturing, were analyzed toward water absorption using NIR spectroscopy. Spectra were recorded in the range between 10,000 and 4000 cm−1, however only the selected ranges from 5288–5100 and 5424–5352 cm−1 were used to successfully build a calibration model, as these regions showed the most variation. Furthermore, the calibration model was tested using validation samples. Those are unknown to the model and their respective value for absorbed water was predicted.

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