A new method for producing porous polymer materials using carbon dioxide and a piston

2018 ◽  
Vol 133 ◽  
pp. 38-41 ◽  
Author(s):  
Takafumi Aizawa
Keyword(s):  
Carbon Dioxide ◽  
Porous Polymer ◽  
Polymer Materials ◽  
New Method

scholarly journals Preparation of Porous Biodegradable Polymer and Its Nanocomposites by Supercritical CO2Foaming for Tissue Engineering

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Xia Liao ◽  
Haichen Zhang ◽  
Ting He
Keyword(s):  
Carbon Dioxide ◽  
Tissue Engineering ◽  
Polymer Nanocomposites ◽  
Biodegradable Polymer ◽  
Processing Parameters ◽  
Porous Polymer ◽  
Polymer Materials ◽  
Biodegradable Materials ◽  
High Level ◽  
Foaming Technology

Using supercritical carbon dioxide (scCO2) as an alternative to conventional methods in the preparation of porous biodegradable polymer and polymer/nanocomposites for tissue engineering has attracted increasing interest in recent years due to the absence of using organic solvents and the ability to incorporate thermosensitive biologicals without loss of bioactivity. Additionally, scCO2can exert a high level of control over porosity and morphology of scaffolds by tuning the processing parameters. This paper describes the newly achievements on the preparation of porous polymer materials using scCO2foaming technology with focus on the porous biodegradable materials and its nanocomposites relevant to tissue engineering.

Engineered Nanocomposites for Capturing and Converting Carbon Dioxide into Useful Chemicals

2012 ◽  
Vol 1441 ◽  
Author(s):  
Michael Ashley ◽  
Punnamchandar Ramidi ◽  
Timothy Bontrager ◽  
Charles Magiera ◽  
Anindya Ghosh ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Oxide ◽  
Metal Oxide Nanoparticles ◽  
Ruthenium Oxide ◽  
Porous Polymer ◽  
Polymer Materials ◽  
Oxide Nanoparticles ◽  
Material System ◽  
Catalytic Function ◽  
Catalytically Active

ABSTRACTWe describe a simple drop-cast processing method to synthesize multicomponent polymer-based nanocomposites for carbon dioxide (CO2) capture and conversion into stable carbonates. These multicomponent nanocomposites are made of combination of different metal oxide nanoparticles and catalysts in a porous polymer matrix. The formulation includes the combination of titanium dioxide and magnesium oxide, ruthenium oxide, and iron oxide where each metal oxide exhibits its own catalytic function of trapping carbon dioxide. Such a material system provides numerous localized catalytically active hot reaction spots generated by the dispersed multifunctional oxide nanoparticles that react with CO2 when exposed to the gas stream and instantaneously convert the captured carbon into carbonates. Finally, we discuss our ongoing work on the possibility of converting captured-carbon-formed-carbonate into useful products/commodities such as methane, methanol and formic acid. The integration of polymer materials with catalytically active nanomaterials shows a promising strategy for CO2 capture and conversion into useful products towards achieving a sustainable energy future.

Cryostructuration as a tool for preparing highly porous polymer materials

2011 ◽  
Vol 2 (5) ◽  
pp. 1059 ◽  
Author(s):  
Harald Kirsebom ◽  
Bo Mattiasson
Keyword(s):  
Porous Polymer ◽  
Polymer Materials ◽  
Highly Porous

Carbon dioxide capture in the presence of water by an amine-based crosslinked porous polymer

2018 ◽  
Vol 6 (15) ◽  
pp. 6455-6462 ◽  
Author(s):  
Mahmoud M. Abdelnaby ◽  
Ahmed M. Alloush ◽  
Naef A. A. Qasem ◽  
Bassem A. Al-Maythalony ◽  
Rached B. Mansour ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Organic Materials ◽  
Carbon Dioxide Capture ◽  
Porous Polymer ◽  
Gas Mixture

A new cross-linked porous polymer was synthesized and its performance in the capture of carbon dioxide from a ternary gas mixture was demonstrated, and properties retained for over 45 cycles. This report represents one of the top performing porous organic materials for carbon capture.

Large Deformation Behavior of Porous Polymer Materials With 3D Random Pore Structure: Experimental Investigation and FEM Modeling

2019 ◽  
Author(s):  
Kanako Emori ◽  
Tatsuma Miura ◽  
Akio Yonezu
Keyword(s):  
Plastic Deformation ◽  
Pore Structure ◽  
Creep Deformation ◽  
Deformation Behavior ◽  
Superposition Principle ◽  
Critical Role ◽  
Test Sample ◽  
Porous Polymer ◽  
Polymer Materials ◽  
Polymeric Membrane

Abstract This study investigates the deformation behavior of porous polymer materials with 3D random pore structure. The test sample has sub-micron-sized pores with an open cellular structure, which plays a critical role for water purification. The base polymer is PVDF (polyvinylidene difluoride). First, the surface and cross section of the sample are observed using FESEM to investigate the microstructure (cell size and geometry of the cell ligament, etc). Next, uni-axial tensile loading is carried out for polymeric membrane and it is found that the membranes underwent elasto-plastic deformation. In order to establish a numerical model, finite element metod (FEM) is employed. Using a software of Surface Evolver, 3D random pore structure is created in the representative volume element (RVE). The established computational model can predict both elastic deformation and plastic deformation. Furthermore, viscoplastic deformation behavior (i.e. time-dependent deformation and creep deformation) is investigated, experimentally and numerically. In particular, creep compliance is measured, and we investigate the effect of applied loading on creep deformation behavior. Using the time–temperature–stress superposition principle (TTSSP), we obtain a new master curve, which covers higher stress level, and successfully establish an FEM model of creep deformation of the test sample. The present model enables the prediction of the macroscopic and microscopic deformation behavior of the porous materials, by taking into account of 3D random pore structure.

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