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Questions related from Arif Shahul Hameed
can any suggest a suitable solvent or mixture of solvent for the precipitation of Bisphenol -A based polymer.I tried many solvent and combination of solvent but I couldn't precipitate it
08 May 2024 2,718 6 View
can any one suggest a solvent for the precipitation of polymer (polycondensation of Bisphenol A and dimethylamino benzaldehyde) from DMSO? I tried water,cold water,alcohol,diethyl ether,ethyl...
26 March 2024 5,451 0 View
Can any one suggest a solvent for the precipitation of polymer (copolymerised vinyl pyridine and vinyl imidazole) from DMSO.
18 March 2024 715 5 View
can anyone suggest a suitable solvent for precipitating the polymer which is prepared by quartenising a basic polymeric(copolymerised vinyl pyridine and vinyl carbazole) backbone with benzyl chloride
28 February 2024 7,074 4 View
Alkali-resistant poly (vinyl benzyl chloride) based anion ex... (Alkali-resistant poly (vinyl benzyl chloride) based anion ex...
28 February 2024 494 0 View
I have tried several time for casting a membrane polymer in NMP solvent over hot air oven and hot plate for making membrane thin film but every time I failed to make it,it form a sticky gel like...
26 February 2024 1,426 4 View
I have dissolved 20mm mole of vinyl pyridine and 20mm mole of vinyl imidazole in 50 ml of NMP solvent for polymerisation in stochiometric ratio 1:1.Now what is the mm mole of polymer formed in 50...
15 February 2024 2,609 1 View
I casted a polymeric film on hot plate but unable to detach it without damage,can any one suggest a remedy for this
12 February 2024 345 4 View
What solvent should be used to precipitate out the copolymer of vinyl pyridine and vinyl carbazole in NMP.I tried deionised water,ethyl acetate everything but unfortunately it doesnt get settle down.
09 February 2024 4,680 4 View
