Piezoelectric Nanoparticle–Polymer Composite Foams
Piezoelectric polymer composite foams are synthesized using different sugar-templating strategies. By incorporating sugar grains directly into polydimethylsiloxane mixtures containing barium titanate nanoparticles and carbon nanotubes, followed by removal of the sugar after polymer curing, highly co...
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| Veröffentlicht in: | ACS applied materials & interfaces 2014-11, Vol.6 (22), p.19504-19509 |
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| container_title | ACS applied materials & interfaces |
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| creator | McCall, William R Kim, Kanguk Heath, Cory La Pierre, Gina Sirbuly, Donald J |
| description | Piezoelectric polymer composite foams are synthesized using different sugar-templating strategies. By incorporating sugar grains directly into polydimethylsiloxane mixtures containing barium titanate nanoparticles and carbon nanotubes, followed by removal of the sugar after polymer curing, highly compliant materials with excellent piezoelectric properties can be fabricated. Porosities and elasticity are tuned by simply adjusting the sugar/polymer mass ratio which gave an upper bound on the porosity of 73% and a lower bound on the elastic coefficient of 32 kPa. The electrical performance of the foams showed a direct relationship between porosity and the piezoelectric outputs, giving piezoelectric coefficient values of ∼112 pC/N and a power output of ∼18 mW/cm3 under a load of 10 N for the highest porosity samples. These novel materials should find exciting use in a variety of applications including energy scavenging platforms, biosensors, and acoustic actuators. |
| doi_str_mv | 10.1021/am506415y |
| format | Article |
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By incorporating sugar grains directly into polydimethylsiloxane mixtures containing barium titanate nanoparticles and carbon nanotubes, followed by removal of the sugar after polymer curing, highly compliant materials with excellent piezoelectric properties can be fabricated. Porosities and elasticity are tuned by simply adjusting the sugar/polymer mass ratio which gave an upper bound on the porosity of 73% and a lower bound on the elastic coefficient of 32 kPa. The electrical performance of the foams showed a direct relationship between porosity and the piezoelectric outputs, giving piezoelectric coefficient values of ∼112 pC/N and a power output of ∼18 mW/cm3 under a load of 10 N for the highest porosity samples. 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| source | MEDLINE; American Chemical Society Web Editions |
| subjects | Barium Compounds - chemistry Biosensing Techniques Carbohydrates - chemistry Nanoparticles - chemistry Polymers - chemistry Porosity Titanium - chemistry |
| title | Piezoelectric Nanoparticle–Polymer Composite Foams |
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