Characterization of Mechanical Property Change in Polymer Aerogels Depending on the Ligand Structure of Acrylate Monomer

Abstract

Abstract:In an effort to overcome the weakness of aerogel, polymer aerogels have been prepared by copolymerizing the different types of monomers through sol-gel process. Polymerizing the successive phase of a high internal phase emulsion, which has interconnected porous structure, porous polymer aerogel can be manufactured. In this paper, we use the styrene/divinylbenzene chain as a basic monomer structure, and additionally use 2-ethylhexyl methacrylate (2-EHMA) or 2-ethylhexyl acrylate (2-EHA) as monomers for distinguishing the visible mechanical properties of synthesized polymer aerogel. We can observe the different tendency of polymer aerogels by kinds of monomer or ratio. Flexibility and microstructure can be changed by the types of monomer. EHA polymer aerogel shows high flexibility and thin microstructure, and EHMA polymer aerogel shows high hardness and thick microstructure. EHA/EHMA polymer aerogel shows the intermediate nature between them. By utilizing the mechanical properties of three types of polymer aerogels to adequate situation or environment, polymer aerogels could be used as drug agent, ion exchange resin, oil filter and insulator, and so on.

Selective Separation of Europium from Lanthanum, Cerium, and Iron Using Porous and Functionalized Polymer

“…By the BET surface area analysis, the pore size and pore volume are measured and porosity using the mass and volume of polymer is calculated. Table shows the BET surface area, pore size, pore volume, and calculated porosity of polymer . Porosity of three kinds of polymer is sufficiently high and satisfies the condition as polymer.…”

“…Table 1 shows the BET surface area, pore size, pore volume, and calculated porosity of polymer. 15 Porosity of three kinds of polymer is sufficiently high and satisfies the condition as polymer. Small pore size and pore volume also prove that they can be utilized as other porous materials, and their surface area can be used in proper situation.…”

Superhydrophobic and Compressible Silica-polyHIPE Covalently Bonded Porous Networks via Emulsion Templating for Oil Spill Cleanup and Recovery

“…The textural properties of silica-polyHIPE covalently bonded aerogel materials were measured using Brunauer-Emmett-Teller (BET) analysis and the surface area values are shown in Table 2 . It is well known that, since polyHIPE (TPM0) has very low specific surface area (12 m 2 /g) though porosity is high due to it possess an open macro-porous morphology with pore size (10–20 µm) 25 . The adsorption and desorption isotherms for the samples TPM1, 2, 3, 4 and 5 are shown in Fig.…”