PLA/PHA-Biodegradable Blends for Pneumothermic Fabrication of Nonwovens

Abstract

This study presents the results of research concerning fabrication of nonwovens from biodegradable polymer blends using the melt-blown method. The experiments performed within the framework of the research confirmed the possibility of obtaining polymer composites based on polylactide (PLA) with poly(hydroxyalkanoates) (PHA) and another aliphatic-aromatic copolyester. The obtained products were subjected to the analyses of chemical structure using the Fourier Transform Infrared Spectroscopy(FTIR) Attenuated Total Reflectance(ATR) method. The physical and mechanical properties of the fabricated nonwoven layers were also tested, which confirmed a wide spectrum of their applicability, depending on the polymer composition used in production.

Microbial Degradation Behavior in Seawater of Polyester Blends Containing Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx)

“…In these cases, the sheet forms (entries 4 and 6) also showed less biodegradability in comparison with those in powder forms. In the previous paper, the PLA/PHA biodegradable blends for pneumothermic fablication of nonwoven was reported [ 18 ]. However, there is no information on the morphology of PHA and PLA blends.…”

Structural changes during 3D printing of bioderived and synthetic thermoplastic materials

“…To overcome the relatively poor mechanical properties of the 3D printed polymers, a relatively wide selection of commercial filaments are already available or under development, which make use of several types of polymer blends (PLA/PHA, PC/ABS, PU/PLA, and so on) and composite formulations (polymer–carbon nanotubes, polymer–ceramic, polymer–metal). Further introduction of additives into the filament recipe (coupling agents, plasticizers, stabilizers, and so on) can fine‐tune the stability and mechanical response to several degradative factors of the final 3D printed polymer, as well as improve the stability of the polymer melt during extrusion .…”

“…Further introduction of additives into the filament recipe (coupling agents, plasticizers, stabilizers, and so on) can fine‐tune the stability and mechanical response to several degradative factors of the final 3D printed polymer, as well as improve the stability of the polymer melt during extrusion . To minimize the environmental footprint of the 3D printing process, biodegradable polymer formulations [based on aliphatic polyesters such as PLA or PHA and polyols (PEG)] or composite formulations filled with plant‐derived materials are already available …”

Biofunctionalization of Textile Materials. 2. Antimicrobial Modification of Poly(lactide) (PLA) Nonwoven Fabricsby Fosfomycin

“…Scanning electron microscopy (SEM) presents the routine technique for morphological investigations of polylactide nonwovens, both electrospin PLA [66][67][68][69][70][71] as well as melt-blown PLA [72][73][74][75][76][77][78][79][80][81] fibers. Scanning electron microscopy spectra of polylactide nonwoven and polylactide nonwoven coated with Fosfomycin modifier are presented in Figures 2 and 3, respectively.…”