Firdos Jahan

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Questions related from Firdos Jahan

In my uv graph,absorption value is decreasing with increasing crosslinking ratio comparing to pure blend/why?

for chitosan/pva(50-50) blend i am getting maximum absorption,but as i am increasing the crosslinking ratio the absorption value is decreasing in uv region.i am attaching the graph(black curve is...

05 October 2016 3,097 3 View

Ionically cross linked chitosan/pva blend film is not swelling in distilled water at room temp. Can you suggest me why it happened?

as i cross linked the blend film in ionic salt solution.but when this ionically cross linked film is dipped in distilled water it is dissolving in it completely not swelling..According to...

08 February 2016 2,426 10 View

What happens exactly if tensile strength of crosslinked chitosan blend is decreasing with increase in modulus of elasticity values?

for blend TS is high but while crosslinking it decreases...%elongation is increasing and also elasticity modulus increased.what should i confirmed from this results?

11 January 2016 5,135 2 View

Does potassium nitrate partially dissolve in ethanol?

i want potassium nitrate to be get crosslinked to biopolymer..so weather pot.nitrate will be partially dissolve in ethanol or not?if yes den weather crosslinking will be done in partially dissolve...

03 December 2015 2,195 7 View

Is chitosan with DA 88.1% soluble in 0.1M Hydrochloric acid solution?

I want to use hcl instead of acetic acid becouse acetic acid give bad irresistable smell..so is it possible that i can take hcl solution?is 2.5gm of chitosan will disslove in 500ml Hcl solution?

25 August 2015 4,728 3 View