一种竹纤维薄膜生物降解材料
By modifying bamboo fiber with acetylated tannic acid and using a fully bio-based composite matrix, combined with solid-phase pre-crosslinking and biaxial stretching processes, the problem of poor compatibility between bamboo fiber and polyester matrix was solved, and a high-strength, biodegradable bamboo fiber film was prepared, which is suitable for multiple fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUJIAN DELV NEW MATERIAL TECH CO LTD
- Filing Date
- 2026-04-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing bamboo fiber has poor compatibility with biodegradable polyester matrix, making it difficult to balance the mechanical and degradation properties of composite materials. It also relies on petroleum-based additives, has poor processability and molding properties, and cannot meet the needs of continuous industrial production.
Bamboo fiber was treated with an acetylation-tannic acid composite modification process to build a stable interfacial bond. A bamboo fiber film was prepared by using a fully bio-based polybutylene succinate and polyhydroxy fatty acid ester composite matrix, combined with epoxidized linseed oil, polyethylene glycol, bacterial cellulose nanocrystals and carnauba wax, through a solid-phase pre-crosslinking-twin-screw melt blending-biaxial stretching film forming process.
It achieves high interfacial bonding between bamboo fiber and polyester matrix, improves the tensile strength, tear strength and biodegradability of the material, broadens the processing and molding window, and the material is completely biodegradable after use with no environmental residue. It has good water vapor barrier properties and is suitable for food packaging, agricultural mulch film and disposable daily necessities.