聚乳酸基生物可降解熔喷非织造材料的研究进展与展望

聚乳酸(PLA)基熔喷非织造材料存在柔韧性不足、驻极耐久性差、功能性单一等问题,限制了其作为高性能吸附与过滤材料的应用和发展,本文全面总结了PLA基熔喷材料在原料设计、加工成形及应用方面的研究进展。介绍了PLA基熔喷材料的加工成形方法及其改性,主要包括母粒改性(共聚/嵌段、增强增韧、功能性改性等)和后整理改性(静电驻极整理和功能整理);阐述了PLA基熔喷材料在空气过滤、医疗防护、卫生保健、组织工程、清洁擦拭、吸油、保暖领域的典型应用。最后,对PLA基熔喷材料的纤维微纳化、多组分化、复合化、耐静电驻极化、功能和智能化发展方向进行了展望,为PLA基熔喷材料的高质化和高值化发展提供理论和技术参考。

Research progress and prospect on biodegradable polylactic acid-based melt-blown nonwovens

Polylactic acid-based(PLA-based)melt-blown nonwovens have drawbacks such as insufficient flexibility,low heat-resistant temperature,poor electret durability,and single functionality,which limit their development and applications as high-performance adsorption and filtration materials.This paper comprehensively reviewed the research progress of PLA-based melt-blown nonwovens focusing on raw material design,processing and applications.It introduced the processing and molding methods of PLA-based melt-blown nonwovens,explored the modification of PLA-based melt-blown materials,including masterbatch modification(copolymerization/block,enhanced toughening,functional modification,etc.)and finishing modification(durable electret and functional finishing).The typical applications of PLA-based melt-blown nonwovens in the fields of air filtration,medical protection,health care,tissue engineering,cleaning and wiping,oil absorption and warmth are explained.The development trends of PLA-based micro-nano scale melt-blown fiber,multi-component,composites,durable electret,function and intelligence are prospected,so as to provide theoretical and technical reference for development of PLA-based melt-blown nonwovens with high quality and high value.