Water‐assisted formation of honeycomb films of poly(<scp>L</scp>‐lactic‐<i>co</i>‐glycolic acid)

Tian, Ye; Ding, Huaiyu; Shi, Yanqiao; Jiao, Qingze; Wang, Xiaolin

doi:10.1002/app.22926

Cited by 27 publications

(15 citation statements)

References 55 publications

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“…Honeycomb microporous films prepared from PS have been studied by a lot of groups [3,20,26]. A few papers were focused on the preparation and application of honeycomb microporous films from PLA [41]. However, few attempts have been put to some commercial polymer materials, such as PMMA and PC [42,43].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of polymeric honeycomb microporous films: breath figures strategy and stabilization of water droplets by fluorinated diblock copolymer micelles

Qin

Yuan

et al. 2012

J Mater Sci

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Polymeric honeycomb microporous films were prepared from fluorinated diblock copolymers, poly(tert-butyl acrylate)-b-poly(2-[(perfluorononenyl)oxy]ethyl methacrylate) (PtBA-b-PFNEMAs), and four other commercial polymers, including polystyrene (PS), polycarbonate (PC), polylactic acid (PLA), and polymethylmethacrylate (PMMA) via breath figures method. The as-formed fluorinated diblock copolymer micelles in chloroform were not only utilized to stabilize the templated water droplets in bulk, but also introduced as the water droplets stabilizer in other polymeric materials. Our strategy was successfully achieved, as the micropores were decorated with the fluorinated diblock copolymer as directly shown in the SEM images and FT-IR/ ATR-FTIR. Polymer concentration and the solution casting volume effects were checked to tune the sizes of the micropores in diblock copolymer films. The ratio of the added fluorinated diblock copolymer as a novel factor to tune the sizes of the micropores was also investigated.

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Section: Resultsmentioning

confidence: 99%

Fabrication of polymeric honeycomb microporous films: breath figures strategy and stabilization of water droplets by fluorinated diblock copolymer micelles

Qin

Yuan

et al. 2012

J Mater Sci

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“…Simplicity and versatility enable this honeycomb-structured porous films formation method to become more attractive, and mono-or multi-layered polymeric thin films with various pore sizes were formed by tuning process variables including humidity, concentration, polymer type, molecular weight, and substrate type. [16][17][18][19][20][21][22][23] Generally, a moist gas flow or a closed humid environment is necessary, and ambient humidity control is an important factor for formation of porous films with regular pores. The moist airflow was produced by bubbling carrier gas flow through distilled water, 24,25 and the humid environment in a closed chamber was controlled by saturated aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Preparation of multi‐level honeycomb‐structured porous films by control of spraying atomized water droplets

Zhang

Chen

Zhang

2014

J of Applied Polymer Sci

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Honeycomb-structured porous films have been widely applied in various industrial areas such as chemical sensors, tissue engineering, and micro reactors. In this article, one novel self-assembly approach is proposed to fabricate well-ordered polyphenylene oxide honeycomb films by a facile control of spraying ultrasonic humidifier atomized water droplets. Proper spraying retention time is necessary for porous films formation with highly uniform pore size. The effect of atomized water droplets flux on the pore size and the regularity of the hexagonal arrays were experimentally investigated. The pore size became larger with increasing the solution concentration. Especially, honeycomb films with two-level pores were fabricated by spraying atomized water droplets two times and the influence of interval time on the two-level honeycomb films formation was investigated. Apart from analysis of structural characteristics, self-assembly mechanism was also discussed.

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“…In 1994, Francois et al [20] discovered that honeycomb-patterned films could be formed from the solution of star-shaped polystyrene (PS) dissolved in carbon disulphide under a flow of moist gas. This process is very convenient and is called breath figure method, water-assisted method, or water drop templating method [21][22][23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

Honeycomb-patterned films of polystyrene/poly(ethylene glycol): preparation, surface aggregation and protein adsorption

Wan

et al. 2009

Sci. China Ser. B-Chem.

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Highly ordered honeycomb-patterned polystyrene (PS)/poly(ethylene glycol) (PEG) films were prepared by a water-assisted method using an improved setup, which facilitated the formation of films with higher regularity, better reproducibility, and larger area of honeycomb structures. Surface aggregation of hydrophilic PEG and adsorption of bovine serum albumin (BSA) on the honeycomb-patterned films were investigated. Field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) were used to observe the surface morphologies of the films before and after being rinsed with water. As confirmed by the FESEM images and the AFM phase images, PEG was enriched in the pores and could be gradually removed by water. The adsorption of fluorescence-labeled BSA on the films was studied in visual form using laser scanning confocal microscopy. Results clearly demonstrated that the protein-resistant PEG was selectively enriched in the pores. This water-assisted method may be a latent tool to prepare honeycomb-patterned biofunctional surfaces.honeycomb-patterned film, water-assisted method, polystyrene, poly(ethylene glycol), surface aggregation

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Water‐assisted formation of honeycomb films of poly(L‐lactic‐co‐glycolic acid)

Cited by 27 publications

References 55 publications

Fabrication of polymeric honeycomb microporous films: breath figures strategy and stabilization of water droplets by fluorinated diblock copolymer micelles

Fabrication of polymeric honeycomb microporous films: breath figures strategy and stabilization of water droplets by fluorinated diblock copolymer micelles

Preparation of multi‐level honeycomb‐structured porous films by control of spraying atomized water droplets

Honeycomb-patterned films of polystyrene/poly(ethylene glycol): preparation, surface aggregation and protein adsorption

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