Starch ester films for moisture barrier applications
Innovative starch ester films offer low water absorption, providing an effective moisture barrier. Developed by Fraunhofer IAP, these films can be processed as dispersions or thermoplastics for diverse applications, with ongoing validation efforts.
Overview
Fraunhofer IAP is developing starch ester films that serve as efficient moisture barriers due to their low water absorption properties. These films, created from hydrophobic long-chain starch esters or mixed esters, can be processed as dispersions or thermoplastic materials. This innovation holds potential for applications in packaging, coatings, and other industries where moisture control is critical.
Technical specifications
Key features:
- Hydrophobic long-chain starch esters and mixed esters
- Low water adsorption, providing effective moisture barrier capabilities
- Can be processed both as dispersions and thermoplastic films
- Potential for coating applications and thermoplastic film formations
Technology readiness level
This technology is currently at TRL 4, with ongoing validation efforts including the synthesis of various starch esters, coating of paper with starch ester suspensions, and thermoplastic film formation. Testing for moisture barrier properties and scale-up of promising formulations are planned.
About Fraunhofer Institute
Fraunhofer is a large, multi-site applied research organization based in Germany, operating a nationwide network of institutes and research units with a strong industry-facing mission. Its contract-research model aligns work to real manufacturing and deployment needs, with pilot lines, test labs, and demonstration facilities for validation and scale-up. Many institutes are integrated with nearby universities and regional industry clusters, enabling joint appointments, shared infrastructure, and fast talent pipelines. Research is supported by competitive European programs alongside German federal and state funding, complemented by extensive contract revenue from private-sector collaborations. A dedicated technology transfer function manages IP, licensing, and startup formation.
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