Fabrication of mesoporous polymer monolith: a template-free approach

Okada, Keisuke; Nandi, Mahasweta; Maruyama, Jun; Oka, Tomonori; Tsujimoto, Takashi; Kondoh, Katsuyoshi; Uyama, Hiroshi

doi:10.1039/c1cc12402a

Cited by 131 publications

(96 citation statements)

References 30 publications

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“…Figure 2 shows FE-SEM images of the CNT-coated PAN monolith with different magnifications. In our previous study, 7 the nitrogen adsorption/desorption isotherms recorded on the monolith as well as the FE-SEM observations confirmed that it had both macropores and mesopores inside. The fibrous CNTs were observed to adsorb on the macropore surface of the monolith uniformly.…”

Section: Cnt-coated Monolithmentioning

confidence: 89%

“…1. 7 Both diameter and height of the columnar monolith were about 10 mm. The porosity and average pore size were ca.…”

Section: Methodsmentioning

confidence: 99%

“…This thermally induced phase separation technique represents a very simple and straightforward approach to the formation of a monolith having a uniform mesoporosity without the assistance of any template. 7 A concrete procedure is described as follows: Polyacrylonitrile (PAN) is first dissolved in a mixture of solvent and non-solvent with heating. This is then cooled to room temperature.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Electrochemical Capacitive Behaviors of a Carbon Nanotube-Coated Polymer Monolith

2013

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A poly(acrylonitrile) monolith having a three-dimensionally developed, continuous porous structure was uniformly coated with carbon nanotubes (CNTs) just by dipping the monolith in an aqueous dispersion of CNTs. This simple procedure successfully realized the modification of the monolith surface with the electron-conductive material. Cyclic voltammetry showed that electrochemical capacitance was indeed imparted to the CNT-coated monolith.

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Section: Cnt-coated Monolithmentioning

confidence: 89%

“…1. 7 Both diameter and height of the columnar monolith were about 10 mm. The porosity and average pore size were ca.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication and Electrochemical Capacitive Behaviors of a Carbon Nanotube-Coated Polymer Monolith

2013

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“…Recently, we have developed a new method to fabricate polymeric monoliths from the corresponding polymer solutions by thermally induced phase separation (TIPS) or non-solvent induced phase separation. These methods are very convenient to prepare monoliths with interconnected porous structure without any templates [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Reactive poly(ethylene-co-vinyl alcohol) monoliths with tunable pore morphology for enzyme immobilization

Wang

Uyama

2015

Colloid Polym Sci

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Poly(ethylene-co-vinyl alcohol) (EVOH) monoliths were fabricated from two kinds of EVOH with different ethylene contents by thermally induced phase separation (TIPS) technique using a mixed solvent of isopropanol (IPA) and water. The pore and skeleton sizes could be controlled by changing the fabrication parameters such as the concentration of the polymer, the ratio of IPA and water, and the cooling temperature. The EVOH monoliths possessed relatively high specific surface area and uniform mesopore structure. Furthermore, the monolith was applied for a support matrix of enzyme immobilization. The monolith was successfully activated by carbonyldiimidazole and subsequently reacted with urease. The good reusability of the urease-immobilized monolith was demonstrated. The present EVOH monoliths have good hydrophilicity and reactive hydroxyl groups; therefore, it possesses large potential for various bio-related applications such as enzyme immobilization and protein purification.

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“…The resultant porous structure is disordered in shape, and it is accompanied by difficulties in the precise control of the porous structural parameters such as pore and skeleton size. Recently, we have reported the fabrication of polymer monolith by thermally induced phase separation (TIPS) [32,33]. This method is an excellent way to prepare microcellular foams and membranes with controlled morphologies.…”

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confidence: 99%