Cationic Starch
CAS Number: 65996-62-5
Cationic starch is a chemically modified starch with positively charged substituents, widely used as a dry strength additive and retention aid in papermaking. It adsorbs strongly onto negatively charged cellulose fibers, improving fiber bonding, filler retention, and drainage on the paper machine. Cationic starch also functions as a surface sizing agent to enhance paper strength and stiffness.
Technical Specifications
| appearance | White to off-white powder |
| pH (5% solution) | 5.0–7.0 |
| moisture content (%) | ≤ 14 |
| nitrogen content (%) | 0.2–0.4 |
| degree of substitution (DS) | 0.02–0.06 |
Applications
- Wet-end dry strength additive for paper and board
- Retention and drainage aid in fiber furnish
- Surface sizing agent for printing paper
- Coating binder for pigment coating
- Corrugated board starch adhesive component
Key Features
- Strong electrostatic adsorption onto cellulose fibers
- Improves tensile, burst, and internal bond strength
- Enhances filler and fine retention significantly
- Versatile: suitable for wet-end and surface application
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CAS Number
65996-62-5
Category
Paper / Pulp ChemicalsAvailability
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