PBS — Polybutylene Succinate Biodegradable Resin Pellets Supplier China | Compostable Foam Mulch Coating
PBS (Polybutylene Succinate) is a bio-based, biodegradable aliphatic polyester produced by polycondensation of succinic acid with 1,4-butanediol. Modern PBS is made with bio-based succinic acid (fermented from sugars) and either bio-based or petrochemical BDO, giving 50–100% bio-based carbon content.
PBS is:
- Bio-based carbon content 50–100% — renewable route available
- Industrially compostable (EN 13432 / ASTM D6400)
- Home-compostable in some grades (TÜV OK Compost HOME)
- Soil-biodegradable
- Higher heat resistance than PLA — HDT ~100°C, Tg ~-15°C (more flexible)
- Good chemical resistance — useful for agricultural and packaging niches
Key Properties of PBS (TDS Summary)
| Property | Value |
|---|---|
| Full name | Polybutylene Succinate |
| Chemistry | Polycondensation of succinic acid + 1,4-butanediol |
| Bio-based carbon content | 50–100% (depending on succinic acid + BDO source) |
| Density | 1.25–1.26 g/cm³ |
| Tensile strength | 30–45 MPa |
| Elongation at break | 300–560% |
| Heat deflection temp (HDT, 0.45 MPa) | 90–110°C |
| Glass transition temp (Tg) | -30 to -15°C |
| Melting point (Tm) | 112–116°C |
| Melt flow index (MFI, 190°C/2.16 kg) | 5–25 g/10 min |
| Melt processing temp | 140–170°C |
| Drying requirement | 80°C / 4–6 h, desiccant dryer |
PBS Subdivisions Available
| Subdivision | Description | Application |
|---|---|---|
| PBS Film Grade | High MFI for blown & cast film | Compostable bags, mulch film |
| PBS Foam Grade | High melt strength, blowing-agent optimized | Compostable loose-fill foam, cushion |
| PBS Coating Grade | Low MFI for paper coating | Compostable paper cups & food containers |
| PBS + PLA Blend | Heat-stiffness modifier | PLA heat-up (improved HDT) |
| PBS + PBAT Blend | Higher heat than PBAT alone | Tea-bag fabric, coffee capsules |
| PBS Bio-based 100% | Bio-succinic acid + bio-BDO | USDA BioPreferred premium grades |
Applications of PBS
Compostable Foam Packaging
- Loose-fill chips (expanded PBS, replaces EPS peanuts)
- Cushion foam for e-commerce
- Compostable protective packaging
Agricultural Mulch Film
- Soil-biodegradable mulch (TÜV OK Soil)
- Higher heat resistance than PLA, useful in warm climates
Paper & Cardboard Coating
- Compostable cup stock (replaces PE coating)
- Compostable food packaging coating
Compostable Film & Bags
- PBS + PBAT blends for bags
- Tea-bag fabric, coffee capsules
Heat-Resistant PLA Modification
- 5–15% PBS blended with PLA raises HDT to 95–105°C
- Hot-drink lids, microwaveable trays
Compliance & Documentation
- EN 13432 — industrial compostability
- ASTM D6400 — US industrial compostability
- TÜV OK Compost HOME — home-compostable variants
- TÜV OK Soil — soil biodegradability
- FDA 21 CFR — food-contact clearance
- EU 10/2011 — European food-contact
- RoHS 2 / RoHS 3 — compliant
- REACH (EC) 1907/2006 — SVHC below 0.1%
- USDA BioPreferred — bio-based content verified (100% bio grades)
Packaging & Logistics
- Pellets: 25 kg / bag (industry standard)
- Storage: dry, sealed, <25°C
- Lead time: 7–14 days stock / 25–40 days custom compound
- MOQ: 25 kg (sample); 1 ton (production batch)
Contact — 24h Quote
Daishuming Lingli — Founder & Sales Director
Phone: +86-13922534393 | Email: [email protected]
Send: PBS grade (film / foam / coating / blend) + bio-based content requirement + quantity + application + destination. 24h reply with TDS, MSDS, COA, EN 13432, ASTM D6400, TÜV OK Compost HOME documentation, and FOB Shanghai or CIF pricing.
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Need PBS quote? 24h response.
Send: grade + quantity + application + destination. FOB Shanghai · CIF major ports. Free TDS · MSDS · EN 13432 · ASTM D6400 · TÜV OK Compost HOME documentation.
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