Regulation of polylactic acid using irradiation and preparation of PLA-SiO₂-ZnO melt-blown nonwovens for antibacterial and air filtration.

ABSTRACT: Since the COVID-19 pandemic, polypropylene melt-blown nonwovens (MBs) have been widely used in disposable medical surgical masks and medical protective clothing, seriously threatening the environment. As a bio-based biodegradable polymer, polylactic acid (PLA) has attracted great attention in fabricating MBs. However, there are still issues with the undesirable spinnability of PLA and the limited filtration and antibacterial performance of PLA MBs. Herein, a high-efficiency, low-resistance, and antibacterial PLA filter is fabricated by melt-blown spinning and electret postprocessing technology. The irradiation technique is used to tune PLA chain structure, improving its spinnability. Further, silica (SiO₂) nanoparticles are added to enhance the charge storage stability of PLA MB

SUBMITTER: Zhu Y 

PROVIDER: S-EPMC9996230 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature