Nanoporous polyimide film from poly(ethylene glycol-co-imide) using a one-step heat calcination process

Cho, Young-Woon; Kang, Kitaek; Jee, Chanhyuk; Kim, Jihyun; Jang, Dongju; Huh, PilHo

doi:10.1080/15421406.2016.1177905

Cited by 2 publications

(2 citation statements)

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“…Among these methods, self-assembly of block copolymers is a promising approach, by which the labile block is removed and an ordered porous structure forms in the remaining matrix. Generally, polypropylene oxide [ 12 ], polypropylene glycol [ 13 ], polyethylene glycol [ 14 ], polycaprolactone [ 15 ] and polymethylmethacrylate [ 16 ] have been used as the etchable block in this approach. It is known that block copolymers can self-assemble into various ordered nanostructures such as sphere, cylinder, gyroid, and lamellae [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Ordered Porous Polyimide Films Templated by (AB)m Type of Diblock Copolymer

Huo

Wang

2023

Polymers

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Ordered porous polyimide films were fabricated from (AB)m type of diblock copolymer polyimide-b-polystyrene (PI-b-PS). An increase in PS volume fraction (f VPS) is beneficial to decrease the relative dielectric constants and water contact angles of the obtained porous PI films: the relative dielectric constant decreases to 1.89 and water contact angle decreases to 43° when f VPS is 0.36, indicating porous PI films can be used as low-κ material and have good wettability. The solvent uptake of the porous PI films increases with increasing f VPS. A net-like morphology appears when f VPS reaches 0.36. The net-like porous PI film reaches equilibrium uptake of water within approximately 2.5 h, with a final equilibrium uptake ratio of 17.5%, and reaches equilibrium uptake of toluene within approximately 8 h, with a final equilibrium uptake ratio of 15.4%, displaying the highest and fastest solvent uptake compared with other microstructured porous PI films, which is ascribed to the specific characteristic of the interconnecting porous channels derived from the self-assembly of PI-b-PS with f VPS 0.36. Introducing thermally degradable segments to PI-based block copolymer is an effective method to prepare porous PI films and can enhance some of their properties.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Ordered Porous Polyimide Films Templated by (AB)m Type of Diblock Copolymer

Huo

Wang

2023

Polymers

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“…But after removal of the labile polymer in the A-PI-A type triblock copolymer, the obtained nanopores within the PI matrix exhibited a disordered structure. 26–29…”

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confidence: 99%

A convenient and large-scale fabrication of ordered micron-sized porous polyimide film

Huo,

Guo,

Wang

2023

New J. Chem.

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Nanoporous polyimide film from poly(ethylene glycol-co-imide) using a one-step heat calcination process

Cited by 2 publications

References 24 publications

Fabrication of Ordered Porous Polyimide Films Templated by (AB)m Type of Diblock Copolymer

Fabrication of Ordered Porous Polyimide Films Templated by (AB)m Type of Diblock Copolymer

A convenient and large-scale fabrication of ordered micron-sized porous polyimide film

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