1. Synthesis and characterization of N-succinyl-chitosan and its self-assembly of nanospheres;Aiping;Carbohydrate Polymers,2006
2. Standard practice for determination of number-average molecular weight of polymers by membrane osmometry;ASTM Standard D3750-79,1985
3. Standard test method for water absorption of plastics;ASTM Standard D570-98,2010
4. Standard practice for calibration of laboratory volumetric apparatus;ASTM Standard E542-01,2007
5. Standard test method for determining degree of deacetylation in chitosan salts by proton nuclear magnetic resonance (1H NMR) spectroscopy;ASTM Standard F2260-03,2008