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PBAT is a thermoplastic biodegradable plastic whose full name is Polybutylene Adipate Terephthalate (copolymer of polybutylene terephthalate and polybutylene adipate). This material combines the properties of polybutylene adipate (PBA) and polybutylene terephthalate (PBT), so it has good ductility and elongation at break, as well as good heat resistance and impact resistance.
The raw materials of PBAT include 1, 4-butanediol (BDO), adipic acid (AA), and terephthalic acid (PTA), which are produced by direct esterification or transesterification. This material has a semi-crystalline structure, a melting point of about 130 degrees Celsius, and excellent biodegradability. It can be decomposed by microorganisms under appropriate environmental conditions. PBAT is widely used in shopping bags, garbage bags, and food packaging to reduce environmental impact.
| Property Type | Standard | Value | Unit |
|---|---|---|---|
| Density | ISO 1183 | 1.21 | g/cm³ |
| Melt Index (190°C, 2.16kg) | ISO 1133 | 2.5~4.5 | g/10min |
| Moisture Content | - | 0.06 | % |
| Tensile Strength | ISO 527 | 25 | MPa |
| Elongation | ISO 527 | 400 | % |
| Vicat Softening Temp | ISO 306 | 80 | °C |
| Melting Temperature | ISO 11357 | 116~122 | °C |
Standard packaging is 25kg/bag (PP woven or PE plastic bag). Approximately 20 tons per 20" container.
