The chitosan are classified in different specifications and grades. This enables you a precise selection and products with constant and reproducible properties.The main indicators of chitosan affecting product application are: degree of deacetylation, viscosity and molecular weight.
DEGREE OF DEACETYLATION
The degree of deacetylation describes the amount of free amino groups of the molecule.
The higher the degree of deacetylation, the more active is the molecule.
VISCOSITY
Chitosan viscosity depends on the molecular weight of the polymer and deacetylation degree and decreases as the molecular weight of chitosan is reduced.The viscosity of chitosan is influenced by its molecular weight.
Ex: viscosity: 800-2000 Cps, 1 wt. % in 1% acetic acid(25 °C, Brookfield)
Chitosan Molecular weight (MW)
Molecular weight (M.W) is the mass of one mole of a substance, decides not only the basic properties of molecules such as conformation , solubility, viscosity and cytotoxicity , but also the formations and strengths of their hydrogels of the molecules.