Control of pore size and pore uniformity in films based on self-assembling block copolymers

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

Blends of self-assembling polystyrene-block-poly(4-vinyl pyridine) (PS-b-P4VP) diblock-copolymers and poly(4-vinyl pyridine) (P4VP) homopolymers were used to fabricate isoporous and nanoporous films. Block copolymers (BCP) self-assembled into a structure where the minority component forms very uniform cylinders, while homopolymers, resided in the core of the cylinders. Selective removal of the homopolymers by ethanol immersion led to the formation of well-ordered pores. In films without added homopolymer, just immersion in ethanol and subsequent swelling of the P4VP blocks was found to be sufficient to create pores. Pore sizes were tuned between 10 and 50 nm by simply varying the homopolymer content and the molecular weight of the block-copolymer. Uniformity was lost when the average pore size exceeded 30 nm because of macrophase separation. However, preparation of films from low MW diblock copolymers showed that it is possible to have excellent pore size control and a high porosity, while retaining a low pore size distribution
Original languageEnglish
Pages (from-to)1568-1579
JournalJournal of polymer science. Part B: Polymer physics
Volume52
Issue number23
DOIs
Publication statusPublished - 2014

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assembling
Homopolymerization
block copolymers
Block copolymers
Pore size
porosity
Pyridine
pyridines
Ethanol
submerging
copolymers
ethyl alcohol
Polystyrenes
Swelling
Porosity
Molecular weight
minorities
retaining
swelling
molecular weight

Keywords

  • METIS-310277
  • IR-95559

Cite this

@article{cbde8a4498e349da8cb389241500f657,
title = "Control of pore size and pore uniformity in films based on self-assembling block copolymers",
abstract = "Blends of self-assembling polystyrene-block-poly(4-vinyl pyridine) (PS-b-P4VP) diblock-copolymers and poly(4-vinyl pyridine) (P4VP) homopolymers were used to fabricate isoporous and nanoporous films. Block copolymers (BCP) self-assembled into a structure where the minority component forms very uniform cylinders, while homopolymers, resided in the core of the cylinders. Selective removal of the homopolymers by ethanol immersion led to the formation of well-ordered pores. In films without added homopolymer, just immersion in ethanol and subsequent swelling of the P4VP blocks was found to be sufficient to create pores. Pore sizes were tuned between 10 and 50 nm by simply varying the homopolymer content and the molecular weight of the block-copolymer. Uniformity was lost when the average pore size exceeded 30 nm because of macrophase separation. However, preparation of films from low MW diblock copolymers showed that it is possible to have excellent pore size control and a high porosity, while retaining a low pore size distribution",
keywords = "METIS-310277, IR-95559",
author = "Erik Vriezekolk and {de Weerd}, {Eddy L} and {de Vos}, {Wiebe Matthijs} and Nijmeijer, {Dorothea C.}",
year = "2014",
doi = "10.1002/polb.23600",
language = "English",
volume = "52",
pages = "1568--1579",
journal = "Journal of polymer science. Part B: Polymer physics",
issn = "0887-6266",
publisher = "Wiley",
number = "23",

}

Control of pore size and pore uniformity in films based on self-assembling block copolymers. / Vriezekolk, Erik; de Weerd, Eddy L; de Vos, Wiebe Matthijs; Nijmeijer, Dorothea C.

In: Journal of polymer science. Part B: Polymer physics, Vol. 52, No. 23, 2014, p. 1568-1579.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Control of pore size and pore uniformity in films based on self-assembling block copolymers

AU - Vriezekolk, Erik

AU - de Weerd, Eddy L

AU - de Vos, Wiebe Matthijs

AU - Nijmeijer, Dorothea C.

PY - 2014

Y1 - 2014

N2 - Blends of self-assembling polystyrene-block-poly(4-vinyl pyridine) (PS-b-P4VP) diblock-copolymers and poly(4-vinyl pyridine) (P4VP) homopolymers were used to fabricate isoporous and nanoporous films. Block copolymers (BCP) self-assembled into a structure where the minority component forms very uniform cylinders, while homopolymers, resided in the core of the cylinders. Selective removal of the homopolymers by ethanol immersion led to the formation of well-ordered pores. In films without added homopolymer, just immersion in ethanol and subsequent swelling of the P4VP blocks was found to be sufficient to create pores. Pore sizes were tuned between 10 and 50 nm by simply varying the homopolymer content and the molecular weight of the block-copolymer. Uniformity was lost when the average pore size exceeded 30 nm because of macrophase separation. However, preparation of films from low MW diblock copolymers showed that it is possible to have excellent pore size control and a high porosity, while retaining a low pore size distribution

AB - Blends of self-assembling polystyrene-block-poly(4-vinyl pyridine) (PS-b-P4VP) diblock-copolymers and poly(4-vinyl pyridine) (P4VP) homopolymers were used to fabricate isoporous and nanoporous films. Block copolymers (BCP) self-assembled into a structure where the minority component forms very uniform cylinders, while homopolymers, resided in the core of the cylinders. Selective removal of the homopolymers by ethanol immersion led to the formation of well-ordered pores. In films without added homopolymer, just immersion in ethanol and subsequent swelling of the P4VP blocks was found to be sufficient to create pores. Pore sizes were tuned between 10 and 50 nm by simply varying the homopolymer content and the molecular weight of the block-copolymer. Uniformity was lost when the average pore size exceeded 30 nm because of macrophase separation. However, preparation of films from low MW diblock copolymers showed that it is possible to have excellent pore size control and a high porosity, while retaining a low pore size distribution

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KW - IR-95559

U2 - 10.1002/polb.23600

DO - 10.1002/polb.23600

M3 - Article

VL - 52

SP - 1568

EP - 1579

JO - Journal of polymer science. Part B: Polymer physics

JF - Journal of polymer science. Part B: Polymer physics

SN - 0887-6266

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ER -