Manufacture of Cationic Starch

Starch is a kind of polymer material, its molecular formula is (C₆H₁₀O₅)_n, which can be used in food, textile, medical and other industries. However, natural starch has not played an ideal role in the industry because of its properties. Modified starch can improve the properties of the original starch and expand its application range. Modification methods mainly include Physical, chemical, and Biological Methods. The preparation of modified starch by cationization is also a common method in Chemical Modification. Cationic starch is a starch derivative formed by the reaction of starch with a cationic etherifying agent under certain conditions. The key to the practicability of cationic starch lies in its affinity for materials with a negative charge, which can be widely used in papermaking, printing, textile, daily chemical industry, oil field, adhesive, sewage treatment, mining, and other industries.

Fig.1 The cationization process of starch. (Bismark, et al., 2016)

Our Services

There are many ways to prepare cationic starch. At CD BioGlyco, we provide different methods to prepare cationic starch. At the same time, we also provide the structure and properties of modified starch testing services.

• Cationic starch production service

The methods of producing cationic starch by CD BioGlyco are mainly divided into wet method, dry method, semi-dry method, one-pot method, and extrusion method.

• Wet method: The specific operation is to prepare modified starch by oxidation, acidification, esterification, etherification, cross-linking, and other modification reactions between raw starch and chemical reagents at medium temperature, which is simple and mild.
• Dry method, semi-dry method, and one-pot method: Higher and more environmentally friendly.
• Extrusion method: More suitable for film forming process.
• Cationic starch detection and analysis service

According to the difference in cationic functional groups, it can be divided into four types of cationic starch: primary, secondary, tertiary, and quaternary amine.

• Infrared (IR) spectrum and nuclear magnetic resonance (NMR) spectrum: Testing the functional groups of cationic starch.
• Degree of substitution (DS): Characterize the average number of cationic groups connected by ether or ester bonds on each glucose unit on the starch.
• Gel permeation chromatography (GPC), high performance size-exclusion chromatography-multi-angle light scattering（HPSEC-MALLS), scanning electron microscope (SEM), X-light scattering, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC): Characterize the structure and properties of cationic starch.

Fig.2 Cationic starch-based production, detection and analysis services. (CD BioGlyco)

Applications

• Cationized starch can be used as crosslinking agents in the paper and printing industries.
• In the light industry, cationized starch can be applied to the production of purifying agents.

Advantages

• Our starch cationization modification services can help in expanding the range of starch applications.
• Our production starch cationization service helps in exploring the technology of modifying carbohydrates.
• Our production and characterization One-Stop Service can greatly improve the efficiency of modified starch production.

CD BioGlyco is devoted to the study of starch and starch derivatives. Based on a professional research team, we provide comprehensive solutions for the production, structural characterization, and performance analysis of cationic starch. If you need technical support, please contact us directly and we will try our best to provide you with the best solution.

• Etherification
• Cross-linking
• Grafting
• Condensing Reaction
• Phosphorylation
• Carboxymethylation
• Acid Hydrolysis
• Transesterification
• Citrate Derivatization