Surface sulfation of crab chitin for anisotropicswelling and nanodispersion
Crab chitin was sulfated {under|below|beneath} heterogeneous {conditions|circumstances|situations} {using|utilizing|making use of|employing|working with|applying} sulfamic acid in N’N-dimethylformamide to selectively sulfate the microfibril surface. The degree of sulfation followed a {first|initial|very first|1st|initially} order…