Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly

Abstract Despite the need for sophisticated instrumentation, breath figure assembly (BFA) methods are restricted to produce macroporous films on a tiny scale so far. The current study narrates the fabrication of macroporous films in hollow fiber geometry which extends to adopt the method for continu...

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Autores principales:	Nazia Noor, Joachim Koll, Clarissa Abetz, Heiko Notzke, Volker Abetz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/56d695356a504c5bb0ea202f8be208df
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spelling	oai:doaj.org-article:56d695356a504c5bb0ea202f8be208df2021-12-02T12:30:12ZContinuous Production of Macroporous Films: an Alternative to Breath Figure Assembly10.1038/s41598-017-08027-52045-2322https://doaj.org/article/56d695356a504c5bb0ea202f8be208df2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08027-5https://doaj.org/toc/2045-2322Abstract Despite the need for sophisticated instrumentation, breath figure assembly (BFA) methods are restricted to produce macroporous films on a tiny scale so far. The current study narrates the fabrication of macroporous films in hollow fiber geometry which extends to adopt the method for continuous production of isoporous surfaces from commercially available low-priced polymer materials. The fabrication of the films in the hollow fiber geometry is carried out by a co-centric quadruple orifice spinneret through which four different liquids are co-extruded simultaneously: bore fluid (to fill the lumen of the fiber), support layer solution, glycerol, and an isoporous film forming solution through the outer most orifice. The extruded entities plunge into a coagulation bath after passing a definite air gap. The implementation of the concept of diffuse-in, droplet formation, and then condense-out behavior of glycerol in a co-extrusion method of hollow fiber spinning makes macroporous film formation possible in an interminable way sidestepping the use of breath figure assembly method. Moreover, the continuous film formation by the proposed mechanism is also authenticated in flat sheet geometry by employing two casting blades in a casting machine. The structure of the films is analyzed by scanning electron microscopy (SEM).Nazia NoorJoachim KollClarissa AbetzHeiko NotzkeVolker AbetzNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nazia Noor Joachim Koll Clarissa Abetz Heiko Notzke Volker Abetz Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly
description	Abstract Despite the need for sophisticated instrumentation, breath figure assembly (BFA) methods are restricted to produce macroporous films on a tiny scale so far. The current study narrates the fabrication of macroporous films in hollow fiber geometry which extends to adopt the method for continuous production of isoporous surfaces from commercially available low-priced polymer materials. The fabrication of the films in the hollow fiber geometry is carried out by a co-centric quadruple orifice spinneret through which four different liquids are co-extruded simultaneously: bore fluid (to fill the lumen of the fiber), support layer solution, glycerol, and an isoporous film forming solution through the outer most orifice. The extruded entities plunge into a coagulation bath after passing a definite air gap. The implementation of the concept of diffuse-in, droplet formation, and then condense-out behavior of glycerol in a co-extrusion method of hollow fiber spinning makes macroporous film formation possible in an interminable way sidestepping the use of breath figure assembly method. Moreover, the continuous film formation by the proposed mechanism is also authenticated in flat sheet geometry by employing two casting blades in a casting machine. The structure of the films is analyzed by scanning electron microscopy (SEM).
format	article
author	Nazia Noor Joachim Koll Clarissa Abetz Heiko Notzke Volker Abetz
author_facet	Nazia Noor Joachim Koll Clarissa Abetz Heiko Notzke Volker Abetz
author_sort	Nazia Noor
title	Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly
title_short	Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly
title_full	Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly
title_fullStr	Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly
title_full_unstemmed	Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly
title_sort	continuous production of macroporous films: an alternative to breath figure assembly
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/56d695356a504c5bb0ea202f8be208df
work_keys_str_mv	AT nazianoor continuousproductionofmacroporousfilmsanalternativetobreathfigureassembly AT joachimkoll continuousproductionofmacroporousfilmsanalternativetobreathfigureassembly AT clarissaabetz continuousproductionofmacroporousfilmsanalternativetobreathfigureassembly AT heikonotzke continuousproductionofmacroporousfilmsanalternativetobreathfigureassembly AT volkerabetz continuousproductionofmacroporousfilmsanalternativetobreathfigureassembly
_version_	1718394398471880704

Continuous Production of Macroporous Films: an Alternative to Breath Figure Assembly

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