Decomposition Behavior of Stereocomplex PLA Melt-Blown Fine Fiber Mats in Water and in Compost

• DOI: 10.1007/s10924-022-02694-w
• Publication Date: 2022-11-28T09:08:54Z
• Authors: Yahya Kara; Kolos Molnár
• Keywords: Original Paper; 02 engineering and technology; 0210 nano-technology; TJ Mechanical engineering and machinery / gépészmérnöki tudományok

This study introduces systematic and comparative investigations of various PLA fine fiber mats prepared by melt blowing. A series PLLA PDLA melt-blown fibers from L D enantiomers blends were produced. Their morphological, mechanical, thermal properties studied, their decomposition in water compost was investigated. It found that the 1:1 ratio blend with stereocomplex crystals had an 80% lower average diameter, 60% higher specific strength better stability than mats. In case composting, crystalline peak melting temperature, crystallinity, thermogravimetric temperatures marginally decreased after 14 days. The high surface played a crucial role fast decomposition, as they entirely disintegrated less only 40 water, homocrystalline domains more susceptible to hydrolysis ones. All underwent extensive disintegration for 70 days water. Hydrolysis reduced amorphous fraction via bulk erosion, while stereocomplex-crystalline-rich mainly exhibited erosion. Findings revealed porosity area undergo water.The online version contains supplementary material available at 10.1007/s10924-022-02694-w.