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Cellulose propionate (CP) is derived from cellulose when it is reacted with propanoic acid (the reagent). CP is an organic ester with the following R group: H or -(C=O)CH2CH3. It is a thermoplastic type polymer.
- Relatively lower plasticizer migration than cellulose acetate or cellulose acetate butyrate
- Stiffer than cellulose acetate or cellulose acetate butyrate
- Transparent and glossy with better low-temperature impact properties than cellulose acetate or cellulose acetate butyrate
- Lower weathering resistance than cellulose acetate or cellulose acetate butyrate
- More expensive than cellulose acetate or cellulose acetate butyrate
- Attacked by acids and alkalis
- Woolen by chlorinated and aromatic hydrocarbons, alcohols and ketones
|Tensile Strength (MPa)
|Flexural Modulus (GPa)
|Notched Izod (kJ/M)
|Linear Expansion (/°C x 10-5)
|Elongation at Break (%)
|Strain at Yield (%)
|Maximum Operating Temperature (°C)
|Water Absorption (%)
|Oxygen Index (%)
|Volume Resistivity (log ohm.cm)
|Dielectric Strength (MV/m)
|Dissipation Factor 1kHz
|Dielectric Constant 1kHz
|HDT @ 0.45 MPa (°C)
|HDT @ 1.80 MPa (°C)
|Material Drying hrs @ (°C)
||2 @ 70
|Melting Temperature Range (°C)
||180 - 250
|Mould Temperature Range (°C)
||40 - 50
- Spectacle frames - injected around the hinges of the frame. Used for its low weight and superior optical properties compared to other commonly used polymers.
- Goggles - dual-layers in visors with other polymers. Used due to its excellent optical properties.
- Tool handles. As it is lightweight, it can help to reduce the weight of the tool.
- Covers for television screens. It gives the screen suitable protection from impact.
- Cutlery handles. It has high chemical resistance for contact with acidic food products.
This article was updated on 29th January, 2020.