releaf®
Quick Overview
releaf® is Avantium's brand name for PEF (polyethylene furanoate) — a 100% plant-based, recyclable polyester made from FDCA (furandicarboxylic acid) produced via Avantium's YXY® Technology. It offers superior barrier properties vs. PET and is a drop-in replacement for fossil-based polyester.
Overview
releaf® is the commercial brand for PEF (polyethylene furanoate) developed by Avantium N.V. — a 100% plant-based, recyclable polyester that serves as a high-performance, sustainable alternative to conventional PET (polyethylene terephthalate).
PEF is produced from FDCA (2,5-furandicarboxylic acid), which Avantium manufactures from plant-based sugars (fructose) using its proprietary YXY® Technology.
Chemical Structure & Properties
Comparison: PEF (releaf®) vs. PET
| Property | PEF (releaf®) | PET | Advantage |
|---|---|---|---|
| Oxygen barrier | ~10× better | Baseline | Extended shelf life |
| CO₂ barrier | ~2× better | Baseline | Carbonated beverages |
| Water vapor barrier | Comparable | Baseline | Equal moisture protection |
| Mechanical strength | Higher tensile | Baseline | Lightweighting potential |
| Thermal stability | Higher Tg (~86°C) | ~78°C | Better heat resistance |
| Glass transition (Tg) | ~86°C | ~78°C | Higher use temperature |
| Melting point (Tm) | ~215°C | ~250°C | Lower processing energy |
Molecular Structure
- PET: Terephthalic acid (benzene ring) + ethylene glycol
- PEF: Furandicarboxylic acid (furan ring) + ethylene glycol
- Key difference: Furan ring (bio-based, 5-membered) vs. benzene ring (fossil, 6-membered)
Sustainability Profile
Bio-based Content
- 100% plant-based when using bio-based MEG (monoethylene glycol)
- FDCA from renewable fructose (starch crops, agricultural residues)
- Future: 2nd-gen feedstocks (lignocellulosic sugars, waste)
Carbon Footprint
- ~50–70% lower GHG vs. fossil PET (cradle-to-gate)
- Biogenic carbon — CO₂ absorbed during plant growth
- LCA validated by independent third parties
End-of-Life
- Fully recyclable in existing PET recycling streams (mechanical)
- RecyClass approved — PEF/PET blends recyclable in PET stream
- Not biodegradable — designed for circular recycling, not composting
- No antimony catalyst — cleaner recycling output
Applications
Primary Markets
- Beverage bottles — CSD, water, juice (superior CO₂/O₂ barrier)
- Food packaging — Films, trays, containers (extended shelf life)
- Personal care — Cosmetics, detergent bottles
- Textiles — PEF fibers, blended with cotton/TENCEL™
- Electronics — Barrier films for displays, flexible electronics
Lightweighting Potential
Due to superior mechanical properties, PEF enables thinner walls — reducing material use by 10–30% vs. PET for equivalent performance.
Technology Platform: YXY®
Process Steps
- Dehydration — Fructose → HMF (5-hydroxymethylfurfural)
- Oxidation — HMF → FDCA (catalytic, high selectivity)
- Purification — FDCA isolation, polymerization grade
- Polycondensation — FDCA + MEG → PEF (standard equipment)
Commercial Status
- Pilot plant: Geleen, Netherlands (operational since 2011)
- FDCA flagship plant: Delfzijl, Netherlands — under construction/commissioning
- Capacity: Targeting 5,000 t/yr FDCA (expandable)
- Technology licensing: Available for partners
Commercial Partnerships
| Partner | Role | Project |
|---|---|---|
| Coca-Cola | Brand owner | PlantBottle™ development |
| Danone | Brand owner | Bottle trials |
| Carlsberg | Brand owner | Green Fiber Bottle |
| ALPLA | Converter | Bottle manufacturing |
| Amcor | Converter | Rigid packaging development |
| Hoogesteger | Juice producer | Capacity reservation |
| Gepack / Frubaça | Bottler/filler | PEF shot bottles (2026) |
Regulatory & Certification
- Food contact: EFSA, FDA compliance (monomer & polymer)
- Recyclability: RecyClass “Design for Recycling” — fully compatible with PET stream
- ISCC PLUS: Mass balance certification available
- REACH: FDCA registered, no SVHC
Market Position
| Metric | Status |
|---|---|
| First commercial PEF | World’s first |
| Polymer class | Novel polyester (not a PET copy) |
| IP portfolio | 200+ patents (YXY®, FDCA, PEF, applications) |
| Listing | Euronext Amsterdam/Brussels (AVTX) |
| Index | AScX component |
Related Glossary Entries
- PEF (if exists)
- FDCA
- YXY® Technology (if exists)
- Bio-based polyester
- PET (if exists)
- Chemical recycling
- Circular economy
- Mass balance approach
Resources
Last updated: July 10, 2026
Source: Avantium corporate communications, scientific publications, press releases