| abstract |
A shaped material is described having at least a surface layer which consists essentially of an acylated mixture of two or more kinds of chitin derivatives represented by the following formula (1): [(C6H8O3x(NH2)xx(NHCOCH3)yx(OR)b]n (1) wherein R represents a carboxyalkyl group with two to four carbon atoms, a hydroxyethyl group, a hydroxypropyl group, a dihydroxypropyl group or an alkyl group with one to three carbon atoms, x is a number of 0.1 to 1.0, y=1.0-x, a is a number of 0 to 1.0, and b=1.0-a, or a salt thereof. |