Cellulose Acetate Disk

Cellulose Acetate Disk is a versatile, transparent thermoplastic form of cellulose modified with acetyl groups, offering excellent optical clarity, dimensional stability, and resistance to moisture and many chemicals. Its machinability into precise circular shapes makes it suitable for applications requiring consistent geometry and optical performance. Industries such as biotechnology, microscopy, and optics rely on cellulose acetate disks for sample supports, membrane substrates, and optical calibration tools. Specific uses include acting as growth and resynthesis substrates for microorganisms and lichens, serving as stable carriers for histological sample preparation, and functioning as optically stable supports in liquid crystal and polarizing devices. In research, cellulose acetate disks provide a controlled, inert platform for studying cell behavior, photonic interactions, and biofilm formation. Their adaptability, biocompatibility, and stability under processing conditions make them indispensable in scientific experimentation and high-precision industrial optical technologies.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Disc

Thickness		±20%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Poor
Acids - dilute	Good-Poor
Alcohols	Fair-Poor
Alkalis	Poor
Aromatic hydrocarbons	Good-Poor
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Poor
Ketones	Poor

Electrical Properties

Element	Value
Dielectric constant @1MHz	~5
Dissipation factor @ 1kHz	0.06
Dielectric strength( kV mm⁻¹ )	11
Volume resistivity( Ohmcm )	5 x 10¹²

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Refractive index	1.49
Resistance to Ultra-violet	Fair
Limiting oxygen index( % )	19
Water absorption - over 24 hours( % )	1.9-7
Density( gcm⁻³ )	1.3

Mechanical Properties

Element	Value
Hardness - Rockwell	34-125
Tensile modulus( GPa )	01-Apr
Izod impact strength( J m⁻¹ )	100-450
Abrasive resistance - ASTM D1044( mg/1000 cycles )	65
Tensile strength( MPa )	12-110

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	52-105
Heat-deflection temperature - 1.8MPa( C )	48-86
Lower working temperature( C )	-20
Upper working temperature( C )	55-95
Specific heat( J K⁻¹ kg⁻¹ )	1200-1900
Thermal conductivity( W m⁻¹ K⁻¹ )	0.16-0.36@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	80-180