Polymeric Foams

1997 ◽  
Keyword(s):  
Polymeric Foams

scholarly journals Biodegradable Polymeric Foams Based on Modified Castor Oil, Styrene, and Isobornyl Methacrylate

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1872
Author(s):  
James Anthony Dicks ◽  
Chris Woolard
Keyword(s):  
Young’S Modulus ◽  
Castor Oil ◽  
Young's Modulus ◽  
Attenuated Total Reflection ◽  
Infrared Spectrometry ◽  
Cell Diameter ◽  
Polymeric Foams ◽  
Reactive Diluent ◽  
Structure Property ◽  
Aerobic Soil

The environmental issues of petroleum-derived polymeric foams have necessitated seeking renewable alternatives. This work aims to prepare renewable free-radically polymerized polymeric foams with the ability to biodegrade. Furthermore, this work attempted to incorporate a bio-based reactive diluent, which has not been reported in the literature. The synthesis of maleated castor oil glycerides was performed with products analyzed by Fourier transform infrared spectrometry using attenuated total reflection (ATR-FTIR) and 1H nuclear magnetic resonance (1H NMR) spectroscopy. Polymeric foams were prepared using maleated castor oil glycerides via free radical copolymerization with styrene and isobornyl methacrylate as reactive diluents. Scanning electron microscopy (SEM) was used to determine anisotropic macrocellular morphology, with log-normal cell diameter distributions. The compressive mechanical and energy absorption properties were investigated; the polymeric foams displayed Young’s modulus up to 26.85 ± 1.07 MPa and strength up to 1.11 ± 0.021 MPa using styrene as the reactive diluent, and Young’s modulus up to 1.38 ± 0.055 MPa and strength up to 0.088 MPa when incorporating isobornyl methacrylate. Furthermore, a thorough analysis of the cellular structure–property relationships was performed, indicating relationships to cell diameter, cell wall thickness and apparent density. The polymeric foams displayed rapid mass loss in an aerobic soil environment with multiple erosion sites revealed by SEM. In conclusion, renewable polymeric foams with excellent compressive properties were achieved using styrene as reactive diluent, but the incorporation of isobornyl methacrylate decreased strength-related properties.

scholarly journals Mechanical response and fracture dynamics of polymeric foams

2009 ◽  
Vol 42 (21) ◽  
pp. 214001 ◽  
Author(s):  
S Deschanel ◽  
L Vanel ◽  
N Godin ◽  
E Maire ◽  
G Vigier ◽  
...  
Keyword(s):  
Mechanical Response ◽  
Polymeric Foams ◽  
Fracture Dynamics

Acid–Base Polymeric Foams for the Adsorption of Micro-oil Droplets from Industrial Effluents

2017 ◽  
Vol 51 (15) ◽  
pp. 8552-8560 ◽  
Author(s):  
Pavani Cherukupally ◽  
Edgar J. Acosta ◽  
Juan P. Hinestroza ◽  
Amy M. Bilton ◽  
Chul B. Park
Keyword(s):  
Industrial Effluents ◽  
Polymeric Foams ◽  
Acid Base ◽  
Oil Droplets

Thermal and Mechanical Characterization of Polymeric Foams with Controlled Porosity Using Hollow Thermoplastic Spheres

2018 ◽  
Vol 18 (2) ◽  
pp. 936-942 ◽  
Author(s):  
Yu Bian ◽  
The Thien Ho ◽  
Younghwan Kwon ◽  
Jin Seuk Kim
Keyword(s):  
Mechanical Characterization ◽  
Polymeric Foams ◽  
Controlled Porosity

Characterization of open-cellular polymeric foams using micro-computed tomography

Polymer ◽  
2020 ◽  
Vol 202 ◽  
pp. 122628
Author(s):  
Cristofaro Timpano ◽  
Hossein Abdoli ◽  
Siu Ning Leung ◽  
Garrett W. Melenka
Keyword(s):  
Computed Tomography ◽  
Polymeric Foams ◽  
Micro Computed Tomography

Polymeric Foams

2017 ◽  
pp. 85-94
Keyword(s):  
Polymeric Foams

Microcellular Polymeric Foams (MPFs) Generated Continuously in Supercritical Carbon Dioxide

2000 ◽  
Vol 629 ◽  
Author(s):  
Srinivas Siripurapu ◽  
Yvon J. Gay ◽  
Joseph R. Royer ◽  
Joseph M. DeSimone ◽  
Saad A. Khan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Vinylidene Fluoride ◽  
Amorphous Polymer ◽  
Extrusion Process ◽  
Operating Conditions ◽  
Polymeric Foams ◽  
Poly Vinylidene Fluoride ◽  
Cell Densities ◽  
Supercritical Carbon

ABSTRACTMicrocellular polymeric foams (MPFs) hold tremendous promise for engineering applications as substitutes to their solid analogs in light of reduced manufacturing/materials costs and improved properties. We present a two-part study addressing the generation of such materials in the presence of supercritical carbon dioxide (scCO2). The first part describes the production of polystyrene MPFs in a continuous extrusion process, as well as the effect of operating conditions such as temperature and CO2 concentration on foam morphology. The second part discusses microcellular foaming of poly (vinylidene fluoride) (PVDF), a semicrystalline polymer, via blending with the amorphous polymer poly (methyl methacrylate) PMMA. Foams of pure PVDF possess ill-defined morphologies, whereas those of PVDF-PMMA blends show an improvement with cell sizes on the order of 10 mm or less and cell densities in excess of 109 cells/cm3.

MULTIPLE COMPRESSIVE LOADING AND UNLOADING BEHAVIOR OF POLYMERIC FOAMS

2007 ◽  
Vol 27 (8) ◽  
Author(s):  
Umud E. Ozturk ◽  
Gunay Anlas
Keyword(s):  
Compressive Loading ◽  
Polymeric Foams ◽  
Loading And Unloading
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