Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites

doi:https://doi.org/10.1002/app.41226

Title: Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites

Abstract

Electroactive shape memory polymer (SMP) composites capable of shape actuation via resistive heating are of interest for various biomedical applications. However, water uptake into SMPs will produce a depression of the glass transition temperature (T _g) resulting in shape recovery in vivo. While water actuated shape recovery may be useful, it is foreseen to be undesirable during early periods of surgical placement into the body. Silicone membranes have been previously reported to prevent release of conductive filler from an electroactive polymer composite in vivo. In this paper, a silicone membrane was used to inhibit water uptake into a thermoset SMP composite containing conductive filler. Thermoset polyurethane SMPs were loaded with either 5 wt % carbon black or 5 wt % carbon nanotubes, and subsequently coated with either an Al ₂O ₃- or silica-filled silicone membrane. It was observed that the silicone membranes, particularly the silica-filled membrane, reduced the rate of water absorption (37°C) and subsequent T _g depression versus uncoated composites. Finally, in turn, this led to a reduction in the rate of recovery of the permanent shape when exposed to water at 37°C.

Authors:

Yu, Ya-Jen ^[1]; Infanger, Stephen ^[1]; Grunlan, Melissa A. ^[2]; Maitland, Duncan J. ^[1]

Texas A&M Univ., College Station, TX (United States). Dept. of Biomedical Engineering
Texas A&M Univ., College Station, TX (United States). Dept. of Biomedical Engineering; Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering

Publication Date:: 2014-07-24

Research Org.:: Texas A&M Univ., College Station, TX (United States)

Sponsoring Org.:: USDOE; National Institutes of Health (NIH)

OSTI Identifier:: 1343094

Grant/Contract Number:: AC52-07NA27344; R01EB000462

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Journal of Applied Polymer Science

Additional Journal Information:: Journal Volume: 132; Journal Issue: 1; Journal ID: ISSN 0021-8995

Publisher:: Wiley

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 59 BASIC BIOLOGICAL SCIENCES; biomedical applications; conducting polymers; thermosets; polyurethanes

Citation Formats


                    Yu, Ya-Jen, Infanger, Stephen, Grunlan, Melissa A., and Maitland, Duncan J. Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites.  United States: N. p., 2014. 
        Web.  doi:10.1002/app.41226.

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                    Yu, Ya-Jen, Infanger, Stephen, Grunlan, Melissa A., & Maitland, Duncan J. Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites.  United States.  https://doi.org/10.1002/app.41226

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                    Yu, Ya-Jen, Infanger, Stephen, Grunlan, Melissa A., and Maitland, Duncan J. Thu .  
        "Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites".  United States.  https://doi.org/10.1002/app.41226.  https://www.osti.gov/servlets/purl/1343094.

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@article{osti_1343094,

  title        = {Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites},

  author       = {Yu, Ya-Jen and Infanger, Stephen and Grunlan, Melissa A. and Maitland, Duncan J.},

  abstractNote = {Electroactive shape memory polymer (SMP) composites capable of shape actuation via resistive heating are of interest for various biomedical applications. However, water uptake into SMPs will produce a depression of the glass transition temperature (Tg) resulting in shape recovery in vivo. While water actuated shape recovery may be useful, it is foreseen to be undesirable during early periods of surgical placement into the body. Silicone membranes have been previously reported to prevent release of conductive filler from an electroactive polymer composite in vivo. In this paper, a silicone membrane was used to inhibit water uptake into a thermoset SMP composite containing conductive filler. Thermoset polyurethane SMPs were loaded with either 5 wt % carbon black or 5 wt % carbon nanotubes, and subsequently coated with either an Al2O3- or silica-filled silicone membrane. It was observed that the silicone membranes, particularly the silica-filled membrane, reduced the rate of water absorption (37°C) and subsequent Tg depression versus uncoated composites. Finally, in turn, this led to a reduction in the rate of recovery of the permanent shape when exposed to water at 37°C.},

  doi          = {10.1002/app.41226},

  url          = {https://www.osti.gov/biblio/1343094},
  journal      = {Journal of Applied Polymer Science},

  issn         = {0021-8995},

  number       = 1,

  volume       = 132,

  place        = {United States},

  year         = {2014},

  month        = {7}

}

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Thermoset shape memory polymers and their composites
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Title: Silicone membranes to inhibit water uptake into thermoset polyurethane shape-memory polymer conductive composites

Abstract

Citation Formats

Shape-memory polymers journal, April 2007

Effects of moisture on the glass transition temperature of polyurethane shape memory polymer filled with nano-carbon powder journal, May 2005

Electroactive shape memory performance of polyurethane composite having homogeneously dispersed and covalently crosslinked carbon nanotubes journal, April 2010

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A review of shape memory polymer composites and blends journal, November 2009

Challenges of shape memory polymers: A review of the progress toward overcoming SMP's limitations journal, November 2008

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Thermomechanics of shape memory polymer nanocomposites journal, October 2004

Shape-memory polymer networks with Fe 3 O 4 nanoparticles for remote activation journal, June 2009

Biomedical applications of thermally activated shape memory polymers journal, January 2010

Stimulus-responsive shape memory materials: A review journal, January 2012

Shape memory polymers based on uniform aliphatic urethane networks journal, January 2007

Ultra low density and highly crosslinked biocompatible shape memory polyurethane foams journal, March 2012

Vascular Dynamics of a Shape Memory Polymer Foam Aneurysm Treatment Technique journal, August 2007

Effects of moisture on the thermomechanical properties of a polyurethane shape memory polymer journal, February 2006

Nanomedicine journal, December 2010

Performance improvement of an ionic polymer–metal composite actuator by parylene thin film coating journal, September 2006

Biocompatible coatings for CMUTs in a harsh, aqueous environment journal, April 2007

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The protein resistance of silicones prepared with a PEO-silane amphiphile journal, January 2012

Implant infections and antibiotic-impregnated silicone rubber coating. journal, February 1989

Hydrophilisation of silicone rubber for medical applications journal, January 2003

Protein-Silicone Interactions journal, March 1999

Biostability of medical elastomers: a review journal, July 1984

Percolation and Conduction journal, October 1973

Review of sol-gel thin film formation journal, January 1992

Processing and properties of poly(methyl methacrylate)/carbon nano fiber composites journal, March 2004

Fluorinated epoxides as surface modifying agents of UV-curable systems journal, May 2003

Superhydrophobic Carbon Nanotube Forests journal, December 2003

Surface transformation of carbon nanotube powder into super-hydrophobic and measurement of wettability journal, August 2006

On the effects of moisture in a polyurethane shape memory polymer journal, December 2003

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Effects of moisture on the glass transition temperature of polyurethane shape memory polymer filled with nano-carbon powder
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Electroactive shape memory performance of polyurethane composite having homogeneously dispersed and covalently crosslinked carbon nanotubes
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Carbonaceous fillers for shape memory actuation of polyurethane composites by resistive heating
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Evaluation of nanoparticulate fillers for development of shape memory polyurethane nanocomposites
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A review of shape memory polymer composites and blends
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Challenges of shape memory polymers: A review of the progress toward overcoming SMP's limitations
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Significantly reducing electrical resistivity by forming conductive Ni chains in a polyurethane shape-memory polymer/carbon-black composite
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Thermomechanics of shape memory polymer nanocomposites
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Shape-memory polymer networks with Fe ₃ O ₄ nanoparticles for remote activation
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Biomedical applications of thermally activated shape memory polymers
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Ultra low density and highly crosslinked biocompatible shape memory polyurethane foams
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Effects of moisture on the thermomechanical properties of a polyurethane shape memory polymer
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Biostability of medical elastomers: a review
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Superhydrophobic Carbon Nanotube Forests
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On the effects of moisture in a polyurethane shape memory polymer
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