Cellulose Acetate
Cellulose acetate is reacted from cellulose and acetic anhydride, in condition of catalyst and other additives. With acetic acid as solvent, the process is basically heterogeneous.
Degree of substitution (DS): DAC (diacetate) DS 2.2–2.5, TAC (triacetate) DS >2.7. DS is an average number representing –OH substituted by –COCH₃.
✓ PUSH acetati can produce various grades with different viscosity/DP, DS, clarity to meet individual requirements.
The repeating unit of cellulose acetate – acetyl groups highlighted
Made with nature in mind
Cellulose acetate is an eco‑friendly material from well‑managed forests, conscientiously harvested and replanted. The process is optimized towards reducing environmental impact by recovering and reusing solvent, water and energy.
Biodegradability
Much more biodegradable than aromatic polyesters and polypropylene. Degradation in two steps:
- Removal of acetyl groups
- Breakdown of the remaining cellulosic structures
💧 Solubility of cellulose acetate
Solubility depends on DS and substituent distribution. Higher combined acetic acid → poorer solubility. Typical solvent for TAC is dichloromethane; for DAC is acetone.
Tab.1 Solubility of cellulose diacetate in different solvents
〇 soluble, Χ insoluble
Note: 〇 soluble, Χ insoluble
🧪 The application of cellulose acetate
From cigarette filters to LCD films, from tool handles to drug delivery — cellulose acetate is everywhere around us.
Why PUSH Acetati?
Italian Heritage
70+ years cellulose expertise
Full Portfolio
flakes, compounds, micropowders
Customization
DS, viscosity, transmittance
Certified
ISCC PLUS · FSC · PEFC
© 2026 PUSH Acetati · Leader of cellulose acetate producer in China
*Technical data subject to change; always refer to current TDS.