Shape memory polymers
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Shape memory polymers are polymers that can be deformed from an original shape to a temporary shape when exposed to an external stimulus like heat or light, and then returned to their original shape upon removal of that stimulus. The document discusses the history and chemistry behind shape memory polymers, how they are activated by heat, light, electricity or other means, and their applications in areas like medical devices and textiles. It also notes limitations like transition limits and temperature ranges that need further research to expand shape memory polymer capabilities and applications.
Shape memory polymers
- 1. Shape Memory Polymers Introduction, Processing Characterization, Applications/Limitations
- 2. Introduction What is its history? Why it is called shape memory polymer? What is shape memory Effect?
- 3. Lets Think Technically!!! What Makes a Polymer “Shape Memory”? What is Thermodynamic Effect of Tg? Let’s illustrate with “Chemistry”
- 4. Switching Effect shape‐memory polymers showing the different hard and soft segments (a) Polyether urethane TFX (28), which is synthesized from methylene bis(p‐cyclohexyl isocyanate) (H12 MDI), 1,4‐butanediol (BD), and poly(tetramethylene glycol) (PTMG). (b) Multiblock copolymer PDC. PPDO, poly(p‐dioxanone); TMDI, 2,2(4),4‐trimethylhexanediisocyanate; PCL, poly(_‐caprolactone).
- 5. Ways of Activation of SMP’s Thermo responsive SMP’s Electrical induced SMP’s Light Induced SMP’s Magnetically Induced SMP’s Water Activated SMP’s
- 6. Applications: Medical usage (neuro surgery and veins blocking) Textile usage (wrinkle free clothes, stretchable fiber) Equipment's for disable people
- 7. Limitation and Future Outcomes Transition Limit Temperature Limitation Research Presently we have shape memory polymers which can remember one shape.Now people are trying to develop the shape memory polymers which can remember more than position . The polymer can shift between two positions . This could lead to artificial muscle.