1H-NMR analysis of degree of substitution in N,O-carboxymethyl chitosans from various chitosan sources and types

• Main Authors: Jaidee A., Rachtanapun P., Luangkamin S.
• 格式: Conference or Workshop Item
• 語言: English
• 出版: 2014
• 在線閱讀: http://www.scopus.com/inward/record.url?eid=2-s2.0-84860831877&partnerID=40&md5=cffd088eed3a74e4594b09884aac47b7; http://cmuir.cmu.ac.th/handle/6653943832/648

N, O-Carboxymethyl chitosans were synthesized by the reaction between shrimp, crab and squid chitosans with monochloroacetic acid under basic conditions at 50°C. The mole ratio of reactants was obtained from various reaction conditions of shrimp chitosan polymer and oligomer types. The mole ratio 1:...