Farhan Ansari

3 Questions 11 Answers 0 Followers

Questions related from Farhan Ansari

What is the best way to determine the 'fracture toughness' of thin films (polymer composites)?

The conventional methods for determining K(IC) values cannot be applied to thin films as the plane strain conditions are not met. What is the next best way to characterize the stress intensity...

30 May 2014 5,375 1 View

Solution casting vs extrusion - which leads to stronger materials?

Why do properties of some polymers depend on the way in which the specimens are prepared. For ex, the extruded Polyvinyl Acetate sheets are much stronger (at least an order of magnitude) than the...

26 January 2014 6,681 9 View

How do 'interfacial characteristics' affect the ageing of an amorphous polymer (PVAc)?

PVAc (M WT 80000 Da), composite with nanocellulose fibrils prepared by solvent casting. I observe a drastic decrease in the Tg of nanocomposites, 1 day after they are prepared; after which the Tg...

07 January 2014 5,278 4 View