Porous polymer films cast from latex-glucose dispersions

Andrew Fogden

doi:10.1016/j.colsurfa.2009.08.003

Porous polymer films cast from latex-glucose dispersions

Andrew Fogden^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Macroporous films of glassy polymer are prepared from stable aqueous dispersions of latex with dissolved glucose, coated on a carrier substrate and dried at elevated temperature to a hybrid film, followed by water immersion to leach out the glucose and any redispersible latex. Temperature and time of drying must be tailored to facilitate local coalescence of latex particles by glucose expulsion while avoiding complete demixing of the two phases. The conditions for which mutual interpenetration of locally film-formed latex and glucose networks can be kinetically locked-in to maximize film yield and porosity are elucidated as a function of glucose/latex content. The porous films were analyzed gravimetrically and by UV-vis spectroscopy and scanning electron microscopy. They possess a disordered connected network of sub-micron pores graded in the film thickness direction, with accessibility decreasing from upper to lower surface due to upward transport of mobile glucose by capillarity and convection.

Original language	English
Pages (from-to)	102-109
Number of pages	8
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	349
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2009.08.003
Publication status	Published - 5 Oct 2009

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10.1016/j.colsurfa.2009.08.003

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title = "Porous polymer films cast from latex-glucose dispersions",

abstract = "Macroporous films of glassy polymer are prepared from stable aqueous dispersions of latex with dissolved glucose, coated on a carrier substrate and dried at elevated temperature to a hybrid film, followed by water immersion to leach out the glucose and any redispersible latex. Temperature and time of drying must be tailored to facilitate local coalescence of latex particles by glucose expulsion while avoiding complete demixing of the two phases. The conditions for which mutual interpenetration of locally film-formed latex and glucose networks can be kinetically locked-in to maximize film yield and porosity are elucidated as a function of glucose/latex content. The porous films were analyzed gravimetrically and by UV-vis spectroscopy and scanning electron microscopy. They possess a disordered connected network of sub-micron pores graded in the film thickness direction, with accessibility decreasing from upper to lower surface due to upward transport of mobile glucose by capillarity and convection.",

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journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

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T1 - Porous polymer films cast from latex-glucose dispersions

AU - Fogden, Andrew

PY - 2009/10/5

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N2 - Macroporous films of glassy polymer are prepared from stable aqueous dispersions of latex with dissolved glucose, coated on a carrier substrate and dried at elevated temperature to a hybrid film, followed by water immersion to leach out the glucose and any redispersible latex. Temperature and time of drying must be tailored to facilitate local coalescence of latex particles by glucose expulsion while avoiding complete demixing of the two phases. The conditions for which mutual interpenetration of locally film-formed latex and glucose networks can be kinetically locked-in to maximize film yield and porosity are elucidated as a function of glucose/latex content. The porous films were analyzed gravimetrically and by UV-vis spectroscopy and scanning electron microscopy. They possess a disordered connected network of sub-micron pores graded in the film thickness direction, with accessibility decreasing from upper to lower surface due to upward transport of mobile glucose by capillarity and convection.

AB - Macroporous films of glassy polymer are prepared from stable aqueous dispersions of latex with dissolved glucose, coated on a carrier substrate and dried at elevated temperature to a hybrid film, followed by water immersion to leach out the glucose and any redispersible latex. Temperature and time of drying must be tailored to facilitate local coalescence of latex particles by glucose expulsion while avoiding complete demixing of the two phases. The conditions for which mutual interpenetration of locally film-formed latex and glucose networks can be kinetically locked-in to maximize film yield and porosity are elucidated as a function of glucose/latex content. The porous films were analyzed gravimetrically and by UV-vis spectroscopy and scanning electron microscopy. They possess a disordered connected network of sub-micron pores graded in the film thickness direction, with accessibility decreasing from upper to lower surface due to upward transport of mobile glucose by capillarity and convection.

KW - Film formation

KW - Latex

KW - Pore forming agent

KW - Porous polymer

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JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

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ER -

Porous polymer films cast from latex-glucose dispersions

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