一种具有立构复合结晶能力的聚乳酸材料及其制备方法
By introducing amide groups into the main chains of PLLA and PDLA, and utilizing hydrogen bonding interactions and carbon chain length adjustments, the problem of stereocomposite crystallization in high molecular weight PLLA/PDLA blends was solved, enabling the efficient preparation of fully bio-based PLA materials and improving the materials' heat resistance and resistance to hydrolytic degradation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN UNIV
- Filing Date
- 2026-04-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to achieve excellent stereocomposite crystallization of fully bio-based degradable PLA materials in high molecular weight PLLA/PDLA blends, and the addition of additives can damage the bio-based properties of the materials and bring about migration risks.
By introducing amide groups into the main chains of PLLA and PDLA, utilizing the hydrogen bonding interactions between amide groups, and appropriately adjusting the carbon chain length, stereocomposite crystallization of high molecular weight PLLA/PDLA blends was promoted, and PLLA/PDLA blends were prepared by solution blending.
It achieves 100% SC crystal formation in high molecular weight PLLA/PDLA blends, improves the material's heat resistance and resistance to hydrolytic degradation, maintains the material's fully bio-based and biodegradable characteristics, and avoids the potential risks of added additives.
Smart Images
Figure CN121975290B_ABST