Songhan Plastic Technology Co.,Ltd.

Biomer P240 PHB Biodegradable Polymer

Category Polymer , Renewable/Recycled Polymer , Thermoplastic , Polyester, TP
Manufacturer Biomer
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Biomer P240 PHB Biodegradable Polymer.pdf
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Material Notes:
PHB is a isotactic, absolutely linear, thermoplastic homopolyester built of 3-hydroxy butyric acid. The formula of the subunit is -[O-CH(CH3)-CH2-CO]-. PHB is free from even traces of catalysts. PHB is waterproof and is highly crystalline (60 to 70%), providing excellent resistance to solvents.PHB is a biopolymer which is present in all living organisms. Many bacteria produce PHB in large quantities as storage material (instead of fat, oil, or starch). It is not toxic and it is totally biodegradable. Biomer produces PHB and processes it to pellets that can be handled on plastics machines the same way as classic plastics produced from oil.PHB is a biological storage material that is used by bacteria and fungi as feed source. The same is true for articles made of Biomer resins: they act as food supply to microorganisms and thus are biodegraded. PHB serves as nutrient only, when phosphates, nitrogen, salts, humidity, and heat allow the microorganisms to grow. Such conditions are present in composts and, in part, in the soil, but not under the conditions of typical use of injection molded or extruded articles. Therefore articles made of PHB stay unharmed for years.
Physical Properties Metric English Comments
Density 1.17 g/cc
0.0423 lb/in³
Moisture Absorption at Equilibrium 0.40 %
0.40 %
Linear Mold Shrinkage 0.013 cm/cm
0.013 in/in
Melt Flow 5.0 - 7.0 g/10 min
5.0 - 7.0 g/10 min
Deformation 6.5 %
6.5 %
at bending break
Mechanical Properties Metric English Comments
Hardness, Shore D 56
Tensile Strength, Ultimate 18.0 - 20.0 MPa
2610 - 2900 psi
Elongation at Break 10 - 17 %
10 - 17 %
Modulus of Elasticity 1.00 - 1.20 GPa
145 - 174 ksi
Flexural Strength 17.0 MPa
2470 psi
Flexural Yield Strength 17.0 MPa
2470 psi
at 3.5%
Charpy Impact Unnotched 8.00 J/cm²
38.1 ft-lb/in²
Charpy Impact, Notched 0.860 J/cm²
4.09 ft-lb/in²
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 120 °C
248 °F
Vicat Softening Point 53.0 °C
127 °F
Minimum Service Temperature, Air -30.0 °C
-22.0 °F
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