Smart Polymers future as biomaterials• Polymer that change inresponse to environmentalchanges are called smartpolymers• Piezoelectric Materials• ThermoresponsiveMaterials• Shape Memory Alloys• Polychromic,Chromogenic orHalochromic Materials
Piezoelectric Materials• The piezoelectric effect is generally thought to act as a biological force sensor.• Piezoelectric materials either produce a voltage when stressed or alter shape under the influence of an electric charge.• Piezoelectric materials are used in electromechanical devices.
Thermoresponsive Materials• Change shape under influence of temperature• materials alter their shape under the influence of the ambient temperature• Used in cancer therapy to identify tumours.• Used in drug delivery and killing of tumour by MNP(MICROGEL NANOPARTICLES)
Magnetic Shape Memory Alloys• Changes in shape due to change in magnetic field• Regains original shape when heat is applied• Mainly used to reconstruct broken bones• Aircraft ,pipelines ,magic shows (shape shifting) _, robots ,surgery , medicine etc.,
Polychromic, Chromogenic or Halochromic Materials• Change color based on external stimuli .i.e., pH, temp. light ,electricity.• Light-photochromic ,• Temp-thermochromic• pH-halochromic
Applications• Specifically targeted drug delivery in surgery by forming a micelle with hydrophobic and hydrophilic substances.• Plasters (band aids) that lose their stickiness when you want to take them off so don’t rip your skin off.
• Biodegradable plastic bags.• non-stick chewing gum (Rev 7)• Even biological uses like detecting bloodglucose• Levels triggering the release of insulin.• Smart polymers are used to change colour inlight widely used in sunglasses and computers
• Used as screen in touch phones.• Used as PZT in heart to generate energy• Used to prepare a shirt• Piezo electric products materials for actuator, oscillator and sputtering target.• Used in seed coatings