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A novel double-walled microsphere composed of chitosan, sodium cellulose sulfate (NaCS) and sodium tripolyphosphate (TPP) was prepared. TPP was used as ionic crosslinker. The morphology of the microspheres was observed by microscope and SEM, and the results showed that the double-walled microsphere was smooth outside, with rough interior surface. FTIR spectra analysis was performed to investigate...
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