Preparation of Large-Diameter “Molded” Porous Polymer Monoliths and the Control of Pore Structure Homogeneity

1997 ◽  
Vol 9 (8) ◽  
pp. 1898-1902 ◽  
Author(s):  
Eric C. Peters ◽  
Frantisek Svec ◽  
Jean M. J. Fréchet
Keyword(s):  
Pore Structure ◽  
Large Diameter ◽  
Porous Polymer ◽  
Polymer Monoliths

Porogens and porogen selection in the preparation of porous polymer monoliths

2019 ◽  
Vol 43 (1) ◽  
pp. 56-69
Author(s):  
Fotouh R. Mansour ◽  
Sidra Waheed ◽  
Brett Paull ◽  
Fernando Maya
Keyword(s):  
Porous Polymer ◽  
Polymer Monoliths

scholarly journals Hierarchically Porous Polymer Monoliths by Combining Controlled Macro- and Microphase Separation

2015 ◽  
Vol 137 (28) ◽  
pp. 8896-8899 ◽  
Author(s):  
Stacey A. Saba ◽  
Maral P. S. Mousavi ◽  
Philippe Bühlmann ◽  
Marc A. Hillmyer
Keyword(s):  
Microphase Separation ◽  
Porous Polymer ◽  
Polymer Monoliths ◽  
Hierarchically Porous

Control of Porous Properties and Surface Chemistry in “Molded” Porous Polymer Monoliths Prepared by Polymerization in the Presence of TEMPO

1999 ◽  
Vol 32 (19) ◽  
pp. 6377-6379 ◽  
Author(s):  
Eric C. Peters ◽  
Frantisek Svec ◽  
Jean M. J. Fréchet ◽  
Camilla Viklund ◽  
Knut Irgum
Keyword(s):  
Surface Chemistry ◽  
Porous Polymer ◽  
Polymer Monoliths ◽  
Porous Properties

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.

Micro pore structure of porous polymer columns

1967 ◽  
Vol 31 ◽  
pp. 547-549 ◽  
Author(s):  
Julian F. Johnson ◽  
Edward M. Barrall
Keyword(s):  
Pore Structure ◽  
Porous Polymer
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