Visualization of the distribution of surface-active block copolymers in PDMS-based coatings

A. Camós Noguer, R. Latipov, F. B. Madsen, A. E. Daugaard, S. Hvilsted, S. M. Olsen, S. Kiil*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Poly(dimethylsiloxane) (PDMS) has been widely employed in the area of fouling-release coatings and other fields due to its unique combination of properties including low elastic modulus and low glass transition temperature. The drawback of PDMS in some applications is its hydrophobic surface, which results in non-specific protein adsorption and wettability issues. Poly(ethylene glycol)-based surface-active block copolymers and surfactants have been added to PDMS coatings and films to impart biofouling resistance and hydrophilicity to the PDMS surface with successful results. Information regarding the distribution and release of these block copolymers from PDMS-based coatings has been previously reported. However, the distribution and behaviour of these compounds in the bulk of the PDMS coating are not fully understood.
A novel fluorescent-labelled triblock PEG-b-PDMS-b-PEG copolymer was synthesized and added to a PDMS coating for visualization purposes. The surface-activity and biofouling resistance of the synthesized copolymer was confirmed by water contact angle measurements and seawater immersion experiments. Confocal laser scanning microscopy (CLSM) images showed that the triblock copolymer aggregates in spherical domains within the PDMS coating film. The size of these domains vary between 1 and 7 μm, with larger domains being present on the bulk of the film and smaller closer to the surface. The diffusion of the copolymer could be observed over time, with copolymer molecules diffusing from the bulk to the surfaces of the PDMS film. Finally, an overview of the possibilities provided by the presented methodology in the field of fouling-release coatings is discussed.
Original languageEnglish
JournalProgress in Organic Coatings
Volume120
Pages (from-to)179-189
ISSN0300-9440
DOIs
Publication statusPublished - 2018

Keywords

  • PDMS
  • Silicone
  • Fouling-release coatings
  • Diffusion
  • Block Copolymers

Cite this

Noguer, A. Camós ; Latipov, R. ; Madsen, F. B. ; Daugaard, A. E. ; Hvilsted, S. ; Olsen, S. M. ; Kiil, S. / Visualization of the distribution of surface-active block copolymers in PDMS-based coatings. In: Progress in Organic Coatings. 2018 ; Vol. 120. pp. 179-189.
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title = "Visualization of the distribution of surface-active block copolymers in PDMS-based coatings",
abstract = "Poly(dimethylsiloxane) (PDMS) has been widely employed in the area of fouling-release coatings and other fields due to its unique combination of properties including low elastic modulus and low glass transition temperature. The drawback of PDMS in some applications is its hydrophobic surface, which results in non-specific protein adsorption and wettability issues. Poly(ethylene glycol)-based surface-active block copolymers and surfactants have been added to PDMS coatings and films to impart biofouling resistance and hydrophilicity to the PDMS surface with successful results. Information regarding the distribution and release of these block copolymers from PDMS-based coatings has been previously reported. However, the distribution and behaviour of these compounds in the bulk of the PDMS coating are not fully understood.A novel fluorescent-labelled triblock PEG-b-PDMS-b-PEG copolymer was synthesized and added to a PDMS coating for visualization purposes. The surface-activity and biofouling resistance of the synthesized copolymer was confirmed by water contact angle measurements and seawater immersion experiments. Confocal laser scanning microscopy (CLSM) images showed that the triblock copolymer aggregates in spherical domains within the PDMS coating film. The size of these domains vary between 1 and 7 μm, with larger domains being present on the bulk of the film and smaller closer to the surface. The diffusion of the copolymer could be observed over time, with copolymer molecules diffusing from the bulk to the surfaces of the PDMS film. Finally, an overview of the possibilities provided by the presented methodology in the field of fouling-release coatings is discussed.",
keywords = "PDMS, Silicone, Fouling-release coatings, Diffusion, Block Copolymers",
author = "Noguer, {A. Cam{\'o}s} and R. Latipov and Madsen, {F. B.} and Daugaard, {A. E.} and S. Hvilsted and Olsen, {S. M.} and S. Kiil",
year = "2018",
doi = "10.1016/j.porgcoat.2018.03.011",
language = "English",
volume = "120",
pages = "179--189",
journal = "Progress in Organic Coatings",
issn = "0300-9440",
publisher = "Elsevier",

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Visualization of the distribution of surface-active block copolymers in PDMS-based coatings. / Noguer, A. Camós; Latipov, R. ; Madsen, F. B.; Daugaard, A. E. ; Hvilsted, S.; Olsen, S. M.; Kiil, S.

In: Progress in Organic Coatings, Vol. 120, 2018, p. 179-189.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Visualization of the distribution of surface-active block copolymers in PDMS-based coatings

AU - Noguer, A. Camós

AU - Latipov, R.

AU - Madsen, F. B.

AU - Daugaard, A. E.

AU - Hvilsted, S.

AU - Olsen, S. M.

AU - Kiil, S.

PY - 2018

Y1 - 2018

N2 - Poly(dimethylsiloxane) (PDMS) has been widely employed in the area of fouling-release coatings and other fields due to its unique combination of properties including low elastic modulus and low glass transition temperature. The drawback of PDMS in some applications is its hydrophobic surface, which results in non-specific protein adsorption and wettability issues. Poly(ethylene glycol)-based surface-active block copolymers and surfactants have been added to PDMS coatings and films to impart biofouling resistance and hydrophilicity to the PDMS surface with successful results. Information regarding the distribution and release of these block copolymers from PDMS-based coatings has been previously reported. However, the distribution and behaviour of these compounds in the bulk of the PDMS coating are not fully understood.A novel fluorescent-labelled triblock PEG-b-PDMS-b-PEG copolymer was synthesized and added to a PDMS coating for visualization purposes. The surface-activity and biofouling resistance of the synthesized copolymer was confirmed by water contact angle measurements and seawater immersion experiments. Confocal laser scanning microscopy (CLSM) images showed that the triblock copolymer aggregates in spherical domains within the PDMS coating film. The size of these domains vary between 1 and 7 μm, with larger domains being present on the bulk of the film and smaller closer to the surface. The diffusion of the copolymer could be observed over time, with copolymer molecules diffusing from the bulk to the surfaces of the PDMS film. Finally, an overview of the possibilities provided by the presented methodology in the field of fouling-release coatings is discussed.

AB - Poly(dimethylsiloxane) (PDMS) has been widely employed in the area of fouling-release coatings and other fields due to its unique combination of properties including low elastic modulus and low glass transition temperature. The drawback of PDMS in some applications is its hydrophobic surface, which results in non-specific protein adsorption and wettability issues. Poly(ethylene glycol)-based surface-active block copolymers and surfactants have been added to PDMS coatings and films to impart biofouling resistance and hydrophilicity to the PDMS surface with successful results. Information regarding the distribution and release of these block copolymers from PDMS-based coatings has been previously reported. However, the distribution and behaviour of these compounds in the bulk of the PDMS coating are not fully understood.A novel fluorescent-labelled triblock PEG-b-PDMS-b-PEG copolymer was synthesized and added to a PDMS coating for visualization purposes. The surface-activity and biofouling resistance of the synthesized copolymer was confirmed by water contact angle measurements and seawater immersion experiments. Confocal laser scanning microscopy (CLSM) images showed that the triblock copolymer aggregates in spherical domains within the PDMS coating film. The size of these domains vary between 1 and 7 μm, with larger domains being present on the bulk of the film and smaller closer to the surface. The diffusion of the copolymer could be observed over time, with copolymer molecules diffusing from the bulk to the surfaces of the PDMS film. Finally, an overview of the possibilities provided by the presented methodology in the field of fouling-release coatings is discussed.

KW - PDMS

KW - Silicone

KW - Fouling-release coatings

KW - Diffusion

KW - Block Copolymers

U2 - 10.1016/j.porgcoat.2018.03.011

DO - 10.1016/j.porgcoat.2018.03.011

M3 - Journal article

VL - 120

SP - 179

EP - 189

JO - Progress in Organic Coatings

JF - Progress in Organic Coatings

SN - 0300-9440

ER -