# Bio-based Biodegradable Polymer Procurement Guide: PLA, PBAT, PBS Applications and Supplier Selection (2026 Edition)
## Introduction
With the global implementation of plastic bans and carbon neutrality targets, bio-based biodegradable polymers have become one of the fastest-growing sectors in the new materials industry. In 2026, China’s biodegradable plastics market is projected to exceed ¥80 billion, with PLA, PBAT, and PBS accounting for over 90% market share.
## 1. PLA (Polylactic Acid): First Choice for Transparent Packaging
### 1.1 Material Properties
– **Feedstock**: Corn starch, sugarcane (biomass fermentation to lactic acid)
– **Bio-carbon content**: 100% bio-based
– **Degradation**: Complete degradation in 180 days under industrial composting
– **Mechanical properties**: Tensile strength 50-70 MPa, comparable to PS
– **Transparency**: Light transmission >90%, superior to PET
– **Heat resistance**: Tg ~60°C, heat deflection temperature 55-60°C
### 1.2 Applications
| Application | Market Share | Technical Requirements |
|————-|————–|————————|
| Food packaging | 45% | Transparency, food-grade certification |
| Disposable tableware | 25% | Heat-resistant modification, injection molding |
| 3D printing materials | 15% | Flowability, dimensional stability |
| Medical implants | 10% | High purity, controllable degradation rate |
| Textile fibers | 5% | Spinning grade, dyeability |
### 1.3 Technical Challenges and Modification Solutions
**Main Issues**:
– Insufficient heat resistance (deforms above 60°C)
– Low toughness (brittle fracture)
– Slow crystallization rate (long molding cycle)
**Solutions**:
– **Heat resistance**: Add nucleating agents → Heat deflection temperature up to 100°C+
– **Toughening**: Blend with PBAT, PBS → Elongation at break increases from 5% to 300%+
– **Crystallization**: Add stereocomplex PLA → Crystallization rate 10× faster
### 1.4 Major Suppliers
**International**:
– NatureWorks (USA): Ingeo series, world’s largest PLA producer, 150 kta capacity
– Total Corbion (Netherlands): Luminy series, leading in heat-resistant PLA
– Novamont (Italy): Complete product range for injection molding and films
**China**:
– Hisun Biomaterials: Largest domestic producer, 50 kta capacity, Revode brand
– COFCO Technology: 30 kta, complete food-grade certifications
– BBCA Biochemical: Integrated corn processing, significant cost advantage
### 1.5 Procurement Recommendations
1. **Food packaging**: NatureWorks Ingeo 2003D, Hisun Revode 190
2. **Heat-resistant tableware**: Total Corbion Luminy LX175 or domestic heat-resistant grades
3. **3D printing**: High flow grades (MFR 15-25 g/10min)
4. **Cost-sensitive applications**: Domestic materials 15-20% cheaper, verify batch consistency
## 2. PBAT (Polybutylene Adipate Terephthalate): First Choice for Films
### 2.1 Material Properties
– **Feedstock**: Petrochemical (terephthalic acid, adipic acid, 1,4-butanediol)
– **Bio-carbon content**: 0% (petroleum-based), but fully biodegradable
– **Degradation**: 6-12 months in natural soil environment
– **Mechanical properties**: Elongation at break >500%, excellent flexibility
– **Processability**: Excellent blown film performance, similar to LDPE
### 2.2 Applications
| Application | Market Share | Technical Requirements |
|————-|————–|————————|
| Shopping/garbage bags | 60% | Film blowing performance, cost control |
| Agricultural mulch films | 20% | Degradation period matching crop cycle |
| Express packaging | 15% | Tear resistance, printability |
| Disposable gloves | 5% | Softness, puncture strength |
### 2.3 Technical Trends
**PLA/PBAT Blend Modification**:
– PLA provides rigidity, PBAT provides toughness
– Typical ratio: PLA 70% + PBAT 30%
– Compatibilizers: Epoxy-functionalized polymers (GMA)
– Balanced performance: Tensile strength 30-40 MPa + Elongation 200-300%
**Bio-based PBAT Development**:
– Bio-based terephthalic acid (BDO route)
– Bio-based adipic acid (glucose fermentation)
– Commercialization expected 2027, 20-30% cost premium
### 2.4 Major Suppliers
**International**:
– BASF (Germany): Ecoflex series, global technology leader, 150 kta capacity
– Novamont (Italy): Origo-Bi series, excellent film performance
– Far Eastern (Taiwan): Eastar Bio series
**China**:
– Xinjiang Bluesword Tunhe: Largest domestic, 120 kta capacity
– Kingfa Sci. & Tech: 80 kta, leading in modified materials
– Hengli Petrochemical: 60 kta, integrated cost advantage
– Tongkun Group: 50 kta, stable quality
### 2.5 Procurement Recommendations
1. **Pure PBAT films**: BASF Ecoflex F Blend B1, Bluesword Tunhe TH801
2. **PLA/PBAT blends**: Kingfa, Hengli modified materials offer good value
3. **Agricultural mulch**: Select degradation-period-adjustable formulations
4. **Cost strategy**: 2026 PBAT prices falling to ¥18,000-22,000/ton, domestic materials advantageous
## 3. PBS (Polybutylene Succinate): Breakthrough in Heat Resistance
### 3.1 Material Properties
– **Feedstock**: Succinic acid, 1,4-butanediol (petroleum or bio-based)
– **Degradation**: 6-12 months in natural environment
– **Heat resistance**: Heat deflection temperature 90-100°C, significantly higher than PLA and PBAT
– **Mechanical properties**: Balanced performance, better toughness than PLA
### 3.2 Applications
| Application | Technical Advantage |
|————-|———————|
| Heat-resistant tableware | Withstands 100°C hot food, superior to PLA |
| Electronic components | Meets electronics temperature requirements |
| Automotive interiors | Can replace PP, biodegradable |
| Premium packaging | Heat resistance + transparency |
### 3.3 Technical Breakthroughs
**Bio-based PBS Commercialization**:
– Bio-based succinic acid: Mature fermentation route
– Bio-based BDO: Low cost, sufficient capacity
– Full bio-based PBS carbon footprint reduced 60%
**PBSA (Polybutylene Succinate-co-Adipate)**:
– Added adipic acid improves flexibility
– Adjustable degradation rate
– Expanded film applications
### 3.4 Major Suppliers
**International**:
– Mitsubishi Chemical (Japan): GS Pla series, technology leader
– Showa Denko (Japan): Bionolle series
**China**:
– Hangzhou Xinfu: Largest domestic PBS producer
– Xinjiang Bluesword Tunhe: Full PBS/PBSA range
– Anhui Tianrun: Leading in bio-based PBS
### 3.5 Procurement Recommendations
1. **Heat-resistant tableware**: PBS is the best alternative to PLA
2. **Cost-sensitive scenarios**: PBS more expensive than PBAT, evaluate cost-performance
3. **Bio-based requirements**: Choose domestic bio-based PBS, significant carbon footprint advantage
## 4. Comparative Summary
| Metric | PLA | PBAT | PBS |
|——–|—–|——|—–|
| Bio-carbon Content | 100% | 0% | 0-100%* |
| Heat Resistance | ★★☆☆☆ | ★☆☆☆☆ | ★★★★☆ |
| Toughness | ★★☆☆☆ | ★★★★★ | ★★★★☆ |
| Transparency | ★★★★★ | ★★★☆☆ | ★★★★☆ |
| Degradation Speed | Medium | Fast | Medium |
| Processability | Injection excellent | Film excellent | Balanced |
| Maturity | ★★★★★ | ★★★★★ | ★★★☆☆ |
| Price (¥/ton) | 18,000-25,000 | 18,000-22,000 | 25,000-35,000 |
*PBS can use bio-based monomers for 0-100% bio-carbon content
## 5. Selection Decision Matrix
### 5.1 Application-Based Selection
| Application | Primary Choice | Alternative |
|————-|—————-|————-|
| Transparent food packaging | PLA | PBS |
| Shopping/garbage bags | PBAT | PLA/PBAT blend |
| Agricultural mulch | PBAT/PBS | PLA/PBAT |
| Heat-resistant tableware | PBS | Heat-modified PLA |
| 3D printing | PLA | – |
| Express packaging | PLA/PBAT blend | PBAT |
### 5.2 Cost Control Strategy
1. **High-volume applications**: Domestic PBAT offers best value
2. **Premium applications**: Imported PLA provides better quality consistency
3. **Blend modification**: PLA+PBAT achieves cost-performance balance
## 6. Market Trends 2026
### 6.1 Price Outlook
– PLA: Influenced by lactic acid prices, projected ¥18,000-25,000/ton
– PBAT: Capacity release, prices falling to ¥18,000-22,000/ton
– PBS: Capacity expansion, prices may drop below ¥25,000
### 6.2 Technology Trends
– Accelerated development of fully bio-based materials
– Breakthroughs in heat-resistant modification
– Precisely controllable degradation periods
– Marine-degradable materials R&D
### 6.3 Policy Environment
– Full implementation of plastic bans in 2026
– Continued subsidies for biodegradable materials
– Enhanced carbon footprint certification requirements
## Conclusion
Bio-based biodegradable polymer selection requires comprehensive consideration of applications, performance requirements, budgets, and regulatory compliance. In 2026, PLA leads in transparent packaging, PBAT dominates film applications, and PBS achieves breakthroughs in heat-resistant applications. Procurement decision-makers should establish multi-material supply chains, select flexibly based on end-use requirements, and monitor bio-based material technology advances and price trends.
—
**Keywords**: bio-based biodegradable polymer, PLA polylactic acid, PBAT film material, PBS heat-resistant plastic, biodegradable plastic procurement
**Published**: July 19, 2026
**Target Audience**: Packaging material procurement managers, plastics manufacturing technical leaders, biodegradable materials traders
Leave a Reply