Properties of a novel carboxymethyl chitosan derived from silkworm pupa

In this study, a carboxymethyl chitosan derived from silkworm pupa (SP‐carboxymethyl chitosan) was prepared. The physical characteristics of the SP chitin, chitosan, and carboxymethyl chitosan were analyzed. The scanning electron microscopy results showed that the surfaces of the samples from SP were more uneven, with more surface fractures compared with those of the reference substance (RS). Thermal analysis, X‐ray photoelectron spectroscopy,...