Tota Rajasekhar

7 Questions 18 Answers 0 Followers

Questions related from Tota Rajasekhar

Please translate in to English of the procedure (selective deprotection of ester) which is in chinese language. please find the attached file. if ?

main the selective deprotection procedure you can translate no need to translate the big chemical names of starting compounds.

01 January 2015 4,141 0 View

What is the importance of side chain functional polymers compared to the main chain polymers?

Actually, in literature, so many groups are concentrating on side chain liquid crystalline polymers than main chain LC polymers. What are the main advantages of side chain LC and functional...

12 December 2014 5,563 5 View

What is the reason for smectic LC textures are focal conic and nematic textures are threaded?

we know the position and orientation order in smectic phases and only positional order of the mesogens in nematic. Is these orders differences causes different pattern of the textures. But why...

12 December 2014 7,484 2 View

Is liquid crystalline transition a 1st order or 2nd order transition?

Particularly in LC polymers, rubbery state to smectic, smc to nematic and LC to isotropic are always gives as peak type transitions in DSC (means that some enthalpy change takes place) accordingly...

12 December 2014 1,466 6 View

How can we distinguish the 1st and 2nd order phase transitions from DSC analysis?

Tg of the polymer material is a second order transition because it takes place some temperature range. But LC transitions like rubbery to smectic, smectic to nematic and nematic to isotropic...

12 December 2014 8,856 11 View

How to we can distinguish the smectic A,B and C LC phases by SAXS analysis in interdigitation type LC moleules/polymers in their smectic layer?

Actually in smectic A the layer spacing is equal to molecular length of the LC molecule, if the spacing is less than that we can give smectic X which is due to tilting of the molecule. At this...

12 December 2014 1,323 0 View

Which is better slolvent system for solution polymerization of acid group containing monomers?

I have tried with excess DMSO, DMF& THF+DMF GETget the poor yields.........how to i will get good yields

02 February 2012 6,750 1 View