Standard Number | GB/T 43012-2023 |
---|---|
Organization | Standardization Administration of China |
Level | National |
Category | Test Method | Characterization | Measurement |
Status |
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This document describes the laboratory determination of fibers by inductively coupled plasma optical emission spectroscopy (ICP-OES) and conductometric titration, respectively. Steps to determine the content of elemental sulfur and sulfate half-ester in plain nanocrystals (CNCs).
This document applies to the following types of cellulose nanocrystals:
a) With monovalent counterions (especially hydronium ions and sodium ions);
b) Dispersions that have not been dried or are redispersed from a dry state;
c) It is obtained by hydrolyzing cellulose raw materials in nature through sulfuric acid or hydrolyzing and then acidifying with sulfuric acid.