Chitosan quaternary is a derivative of chitosan obtained through chemical modification (introduction of quaternary ammonium groups). It retains the biocompatibility and biodegradability of chitosan while significantly enhancing water solubility, antibacterial properties, and positive charge characteristics, enabling broad applications in medicine, daily chemicals, food, agriculture, and other fields.
With expertise as a chitosan quaternary manufacturer and supplier, Tianya Chemical excels in producing high-quality chitosan quaternary, delivering tailored solutions to address the diverse needs of these industries.
Structure and Characteristics of Chitosan Quaternary
Chitosan is a deacetylated product of chitin, containing abundant amino (-NH₂) and hydroxyl (-OH) groups. However, its poor water solubility limits its applications. Quaternization modification introduces quaternary ammonium groups (e.g., -N⁺(CH₃)₃) onto the chitosan molecular chain via chemical reactions, endowing it with the following properties:
High Water Solubility: Strongly positively charged quaternary ammonium groups disrupt intramolecular hydrogen bonds, allowing dissolution in neutral or even alkaline conditions, chitosan quaternary resolves the poor solubility of natural chitosan.
Strong Antibacterial Activity: Chitosan quaternary enhances electrostatic adsorption between positive charges and negatively charged bacterial cell membranes facilitates membrane penetration, disrupting cell structures and inhibiting metabolism. It exhibits a broader antibacterial spectrum.
Biocompatibility: Chitosan quaternary retains the biosafety of natural chitosan; non-cytotoxic and biodegradable into harmless products, making it eco-friendly.
Adhesion and Film-Forming Ability: Positive charges enhance adhesion to negatively charged biological tissues, and its film-forming properties create protective barriers against external stimuli.
Applications of Chitosan Quaternary
Leveraging its water solubility, antibacterial activity, and biocompatibility, chitosan quaternary demonstrates unique value across multiple sectors:
Medicine and Healthcare
Antibacterial Dressings: Chitosan quaternary is used in medical gauze, gels, and films for wound care. Positive charges adsorb and kill bacteria while forming a moisturizing film to accelerate healing and reduce infection risk.
Mucosal Drug Delivery Carrier: High solubility and mucosal adhesion improve drug retention and absorption efficiency—applied in oral ulcer gels, nasal vaccines, etc.
Antibacterial Coatings: Chitosan quaternary is coated on medical devices to inhibit bacterial colonization, reducing device-related infections.
Daily Chemicals and Personal Care
Antibacterial Skincare: Chitosan quaternary is added to cleansers, toners, and masks to inhibit Cutibacterium acnes while gently cleansing skin—suitable for sensitive skin.
Oral Care Products: Incorporated in toothpaste, mouthwash, and dental powder to suppress oral pathogens, preventing cavities and gingivitis without mucosal irritation.
Hair Care: Chitosan quaternary is added to shampoos/conditioners to adhere to negatively charged hair surfaces via positive charges, forming protective films that reduce cuticle damage and improve dryness/split ends.
Agriculture
Green Fungicide: Chitosan quaternary is used as botanical pesticide, adsorbs to plant surfaces and pathogens via positive charges, disrupting cell membranes and inhibiting reproduction to control crop diseases without phytotoxicity or environmental pollution.
Fertilizer Synergist: Compounded with fertilizers to adsorb nutrients via positive charges, reducing loss and improving utilization; simultaneously promotes beneficial soil microbes and improves soil structure.
Water Treatment
Flocculant: Strong positive charges adsorb negatively charged suspended particles, organics, and bacteria, forming flocs for sedimentation in wastewater treatment. More eco-friendly than traditional aluminum salt flocculants.
Advantages of Chitosan Quaternary
Highly Effective and Safe Antibacterial Activity: Chitosan quaternary is superior to natural chitosan against diverse microbes; non-toxic to human cells, plants, and animals—aligns with “green and eco-friendly” trends.
Dramatically Improved Water Solubility: Chitosan quaternary overcomes chitosan’s acid-solubility limitation, dissolving across a wide pH range for versatile processing into solutions, gels, films, etc.
Tunable Functionality: Adjusting the quaternization degree flexibly modifies water solubility, antibacterial strength, and charge density for diverse applications.
Renewable Raw Materials: Chitosan quaternary is sourced from natural waste, abundant and sustainable. Production is eco-friendly, supporting circular economy principles.
Tianya Chemical produces high-quality chitosan quaternary with advanced modification techniques, ensuring consistent quality. We offer flexible supply and technical support for tailored applications. Trust us for reliable, high-performance chitosan quaternary solutions.
Package & Storage
Package: 25 Kg fiber drum
Storage: Store in a cool, dry place, away from heat and light. The shelf life: 24 months.
Technical Documents
Chitosan Quaternary Specifications
