Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Test Method for Determining Degree of Deacetylation in Chitosan Salts by Proton Nuclear Magnetic Resonance (1H NMR) Spectroscopy
Automaticky přeložený název:
Standardní testovací metoda pro stanovení Stupeň deacetylace chitosanu v solí Spektra protonové nukleární magnetické rezonance ( 1H NMR ) spektroskopie
NORMA vydána dne 10.4.2003
Označení normy: ASTM F2260-03
Poznámka: NEPLATNÁ
Datum vydání normy: 10.4.2003
Kód zboží: NS-53393
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
dacetylation, chitosan salts, proton, nuclear magnetic resonance, NMR, spectroscopy, ICS Number Code 11.120.20 (Wound dressings. Compresses), 71.040.50 (Physicochemical methods of analysis)
1. Scope | ||||||||
1.1 This test method covers the determination of the degree of deacetylation in chitosan and chitosan salts intended for use in biomedical and pharmaceutical applications as well as in Tissue Engineered Medical Products (TEMPs) by high-resolution proton NMR (1H NMR). A guide for the characterization of chitosan salts has been published as Guide F 2103. 1.2 The test method is applicable for determining the degree of deacetylation (% DA) of chitosan chloride and chitosan glutamate salts and is valid for % DA values from 50 up to and including 99. It is simple, rapid, and suitable for routine use. Knowledge of the degree of deacetylation is important for an understanding of the functionality of chitosan salts in TEMP formulations and applications. This test method will assist end users in choosing the correct chitosan for their particular application. Chitosan salts may have utility in drug delivery applications, as a scaffold or matrix material, and in cell and tissue encapsulation applications. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
||||||||
2. Referenced Documents | ||||||||
|
Poslední aktualizace: 27.09.2024 (Počet položek: 2 350 600)
© Copyright 2024 NORMSERVIS s.r.o.