Patent ID: 11970790
Assignee: NINGBO INSTITUTE OF MATERIALS TECHNOLOGY & ENGINEERING CHINESE ACADEMY OF SCIENCES
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D  C  Y | IPC C  D

Claim 5:
6. A membrane of poly (lactic acid) (PLA), the membrane having:
an average thickness between 5 μm and 55 μm;
an average porosity between 75% and 85%;
an average pore size between 0.1 μm and 1 μm; and,
consisting of PLA nanofibers with an average diameter between 50 nm and 200 nm,
wherein said nanofibers contain a crystal phase with a volume fraction between 45% and 85% and the crystal phase contains PLA stereocomplex crystals with a volume fraction between 85% and 95%.