A Switchable Liquid Crystal Impregnated Porous Polymer Device

Mason, Ian; Guy, S.; Sage, IC; McDonnell, DG; Cameron, Neil R.; Sherrington, D. C.

doi:10.1080/10587259508033617

Cited by 2 publications

(1 citation statement)

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“…Porous polymer materials can be designed to possess advantageous properties including compressibility − and elasticity, − which when combined with their internal porosity enable these materials to be used in applications such as acoustic waveguiding, − size/chemical exclusion filtration, and cell proliferation . One method to synthesize porous polymers is through using an emulsion templating approach .…”

Section: Introductionmentioning

confidence: 99%

Stearic Acid-Infused PDMS PolyMIPEs Exhibiting Shape Memory Behavior

Smith,

Brown,

Newman

et al. 2024

Macromolecules

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Emulsion-templated polymerizations are an attractive route to prepare porous materials that possess broad tunability by controlling the features of the emulsion template. Emulsiontemplated polymer materials possessing shape memory behavior have also been reported, usually using (meth)acrylate monomers. However, achieving shape memory properties in emulsiontemplated materials with polymers that do not possess accessible thermal transitions, including polydimethylsiloxane (PDMS), remains challenging. Here, porous PDMS materials have been prepared with stearic acid within the continuous phase of the emulsion template. The inclusion of stearic acid imparts the material with a transition temperature of ∼70 °C, and the porous materials in this work obtained fixity >90% and recovery >95% over multiple shape memory cycles. These results demonstrate how low glass-transition temperature emulsion-templated polymer materials can easily be given shape memory properties. This work should be a starting point for studies of elastomeric emulsion-templated polymer materials in applications, including in soft robotics.

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