Cellulose acetate (CA) is a semi-synthetic polymer material produced through the acetylation reaction of natural cellulose, combining biodegradability with chemical stability. Its unique porous structure, non-toxic properties, and tunable physical characteristics make it an essential material for cigarette filters and a high-value excipient in the pharmaceutical industry. It can also be used to produce enteric coatings for pharmaceuticals, cellulose acetate filter membranes, and other applications. Additionally, it is utilized in the production of cellulose acetate plastics and cellulose acetate filter membranes.
Nombre químico :
Cellulose acetate (CA)Solicitud :
Mainly for Cigarette filter and medical filtrationModelo de producto :
CA-398-3, CA-398-10, CA-398-30Apariencia :
Colorful powdermarca :
KabasphCellulose acetate (CA) is a product formed through homogeneous/heterogeneous reactions between cellulose and acetic anhydride in the presence of a catalyst and other auxiliary reagents. Cellulose acetate (CA) can be classified into different products such as diacetate cellulose and triacetate cellulose (TAC) based on the degree of acetylation (also known as substitution degree, an average value indicating the extent to which the three hydroxyl groups on the cellulose unit are substituted). Among these, a substitution degree of 2.2–2.5 corresponds to diacetate cellulose, while a substitution degree greater than 2.7 corresponds to triacetate cellulose (TAC).
Diacetate cellulose can further be divided into spinning-grade cellulose acetate: Spinning-grade products are internationally recognized as non-toxic and harmless materials with no known alternatives. Their primary application is as filtration materials, particularly in cigarette filters, where they are used in very large quantities and serve as the core material for cigarette filters.
Competitive Advantage Analysis
CA for cigarette filters
|
Character |
CA |
Polypropylene (PP) |
Polylactic acid (PLA) |
|
Filtration efficiency |
★★★★★ |
★★☆☆☆ |
★★★☆☆ |
|
Biodegradability |
Partially degradable (2-5 years) |
Non-degradable |
Fully degradable |
|
Processing costs |
Medium |
Low |
High |
Advantage:
Technical Data:
|
Enterprise product standards |
CA-398-3 |
CA-398-10 |
CA-398-30 |
|
Combined acids(%) |
53.2%-55.2% |
53.2%-55.2% |
53.2%-55.2% |
|
Intrinsic Viscosity(dL/g) |
actual measured value |
actual measured value |
actual measured value |
|
Moisture(%) |
≦1.5% |
≦1.5% |
≦1.5% |
|
Free acids (ppm) |
≦70 |
≦70 |
≦70 |
|
Kinematic Viscosity |
10-30 |
32-55 |
90-145 |
|
Turbidity |
actual measured value |
actual measured value |
actual measured value |
|
Dissolution Time（min） |
≦60 |
≦60 |
≦60 |
Application
Cigarette industry
Cellulose acetate (CA) accounts for 80% of the market share in the tobacco industry, where it is mainly used to manufacture cigarette filters. This material effectively filters harmful substances in tobacco (such as nicotine and tar) and is flame retardant, reducing the release of harmful substances during combustion and improving cigarette safety.
Medical field
In the pharmaceutical field, cellulose acetate is widely used in drug controlled-release systems and Medical filtration equipment, such as the film material for sustained-release tablets and enteric coatings, to reduce side effects by controlling the release rate of drugs. In addition, its biocompatibility is also used in biomedical materials such as wound dressings and bone tissue scaffolds, which are both breathable and antibacterial.
Cellulose acetate (CA) is a high-performance material modified by acetylation of natural cellulose. With its excellent filtration properties, biocompatibility, and controllable physical and chemical properties, it occupies an important position in cigarette filters and the medical field. As a leading supplier of chemical raw materials, China AAB Group provides high-quality cellulose acetate to meet the needs of various industries.If you need more technical data,or free samples for testing, please feel free to contact us.
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