Water-assisted formation of honeycomb structured porous films

Wong, Kam Cheong; Hernández-Guerrero, M.; Granville, Anthony M.; Davis, Thomas P.; Barner‐Kowollik, Christopher; Stenzel, Martina H.

doi:10.1007/s10934-006-8007-4

Cited by 61 publications

(53 citation statements)

References 27 publications

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“…The mechanism might still be unknown, but the water templating process is now widely accepted as a way of preparing regular porous arrays. Deviations from this process such as the emulsion technique or casting on water 24 allow versatile applications for a range of polymers.…”

Section: Discussionmentioning

confidence: 99%

“…If the airflow rate is too high, the solution evaporates too rapidly, freezing in place a nonordered film, as water droplets condense onto the surface with insufficient time to arrange in a regular order. 24 The nonisothermal and nonequilibrium nature of the process means that the rate of evaporation varies during the evolution of the casting process. Starting with a polymer solution at room temperature, the solution cools rapidly with the onset of evaporation, altering the subsequent rate of evaporation (and consequently the rate of the temperature change).…”

Section: Casting and Quality Of Order: Film Analysismentioning

confidence: 99%

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Formation of honeycomb‐structured, porous films via breath figures with different polymer architectures

Stenzel

Barner‐Kowollik

Davis

2006

J. Polym. Sci. A Polym. Chem.

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295

272

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Honeycomb-structured, porous films with pore sizes ranging from 200 nm to 7 lm were prepared with breath figures. The regularity of the hexagonal array and the pore size was influenced by the polymer architecture and the casting conditions. A nanoscaled suborder next to the microarray was obtained with amphiphilic block copolymers. These films were shown to be suitable as surfaces for cell growth.

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Section: Discussionmentioning

confidence: 99%

Section: Casting and Quality Of Order: Film Analysismentioning

confidence: 99%

Formation of honeycomb‐structured, porous films via breath figures with different polymer architectures

Stenzel

Barner‐Kowollik

Davis

2006

J. Polym. Sci. A Polym. Chem.

Self Cite

295

272

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show abstract

“…Each emulsion was then cast onto a glass cover slip under ambient conditions and at 68% RH to produce the porous films. 157 Sun et al studied the particle-assisted fabrication of honeycomb structured hybrid films using silica, PS particles, and poly(N-isopropylacrylamide)-co-acrylic acid microgel particles in facilitating breath figure array preparation and it was concluded that inorganic particles, polymeric particles, and microgels can be used to serve as stabilizers in the breath figure method. The authors claimed that this particle assisted, bottom up surface patterning technique has great potential for the production of functional porous structures.…”

Section: Emulsification Technique In Breath Figures Patterning Methodsmentioning

confidence: 99%

Anticholinesterase furocoumarins from Heracleum platytaenium, an endemic species to Idea mountains

Dincel¹

2013

Turk J Chem

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Seven different nonlinear height (h)-diameter (d) models were developed and compared for brutian pine (Pinus brutia Ten.), black pine (Pinus nigra Arnold), and Taurus cedar (Cedrus libani A.Rich.) in southern Turkey. Residual analysis was conducted to identify the error structure. A weighting factor of w i =1/d was found to be appropriate for achieving the equal error variance assumption. The performance of the models was compared and evaluated based on 6 statistical criteria and residual analysis. Results suggested that the Gompertz model was superior to the other models in terms of its predictive ability. These tree species were located throughout the Mediterranean region, covering a wide range of topographic and climatic conditions. It is well known that height-diameter relationships depend heavily on local environmental conditions. Differences in the height-diameter relationship among and between ecoregions were tested using the nonlinear extra sum of squares method. Test results suggested that height-diameter models significantly differed between ecoregions, indicating that ecoregion-based height-diameter models are needed for prediction purposes. The ecoregion-based height-diameter models developed in this study may provide more accurate information for developing forest growth and yield models.

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“…Porous films in this study were cast according to the air-flow technique described elsewhere [28]. 12-20 mL of polymer solutions with a polymer concentration of 10 mg mL À1 , dispensed from a precision syringe pump, were introduced onto 5 mm diameter round glass cover slips within the Perspex box and allowed to evaporate to dry, to yield porous films.…”

Section: Methodsmentioning

confidence: 99%

Microwells with Patterned Proteins by a Self‐Assembly Process Using Honeycomb‐Structured Porous Films

2008

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Water-assisted formation of honeycomb structured porous films

Cited by 61 publications

References 27 publications

Formation of honeycomb‐structured, porous films via breath figures with different polymer architectures

Formation of honeycomb‐structured, porous films via breath figures with different polymer architectures

Anticholinesterase furocoumarins from Heracleum platytaenium, an endemic species to Idea mountains

Microwells with Patterned Proteins by a Self‐Assembly Process Using Honeycomb‐Structured Porous Films

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