1. NANOPARTICLES Their application in probing Glass Transition Temperature of Polymers. By RATAN KISHORE PUTLA Mechanical & Aerospace Engineering Oklahoma State University

2. QUICK OVERVIEW  FEW DEFINITIONS  MY RESEARCH  CONCLUSION

3. DEFINITIONS  NANOPARTICLES  1 Nanometer (nm) = 10 -9 Meter  Particles whose dimensions are of the order of ‘nm’  GLASS TRANSITION TEMPERATURE (T g )

4. MY FIELD OF RESEARCH  PROBING THE GLASS TRANSITION TEMPERATURE OF A POLYMER BY EMBEDDING METAL NANOPARTICLES  IMPORTANT THINGS INVOLVED  POLYMER  NANOPARTICLE  RAMAN SPECTROSCOPY

5. NANOPARTICLES  GOLD NANOPARTICLES (Au)

6. POLYMER USED  THIN FILM OF POLYSTYRENE  PREPARED BY SPIN COATING

7. RAMAN SPECTROSCOPY THE RAMAN SPECTROMETER

8. CALCULATION OF “Tg”  Intensity Vs Wave number  Peak shift  Peak values Vs Temperature

9. CONCLUSION  NANOPARTICLES HELPS IN FINDING THE GLASS TRANSITION TEMPERATURE OF POLYSTYRENE.

10. REFERENCES  Macromolecules - V.Zaporojtchenko et al.  Direct Imaging of Nanoparticle Embedding to probe viscoelasticity of polymer surfaces – J.H.Teichroeb et al.  Investigation of Surface Glass Transition Temperature by embedding of Noble Metal Nanoclusters into Monodisperse Polystyrenes – Jorn Erichsen et al.  Nanosphere Embedding into Polymer Surfaces : A Viscoelastic Contact Mechanics Analysis – Hutcheson et al.  Tuinstra, F. & Koenig, J. L. 1970. Raman Spectrum of Graphite. Journal of Chemical Physics 53(3), 1126-1130.

11. ANY QUESTIONS PLEASE ?

12. THANK YOU VERY MUCH…. RATAN KISHORE PUTLA.