Properties enhancement of partially biodegradable polyamide/polylactide blends through compatibilization with novel polyalkenyl-poly-maleic-anhydride-amide/imide-based additives

Abstract

This work is dedicated to compatibilization process investigation between polyamide 6 and biodegradable polylactide. The process was conducted by newly developed polyalkenyl-poly-maleic-anhydride-imide/amide agents over a selected range of composition to identify morphologies and properties of these blends. The properties of resulted blends were studied by scanning electron microscopy, solvent extraction techniques, mechanical testing, Fourier transform infrared spectroscopy, and differential scanning calorimetry measurements. Results show that blending of the two polymers without compatibilizers produced multiphase blends. It was shown by scanning electron microscopy imaging that addition of prepared compatibilizers reduced a domain size of a dispersed phase and also changes in nearly co-continuous state occurred. Static and dynamic mechanical properties were improved, and especially impact strength and tensile strength were the most sensitive on the presence of compatibilizers.

Biodegradable Plastics Prepared from Poly(lactic acid), Poly(butylene succinate) and Microcrystalline Cellulose Extracted from Waste-Cotton Fabric with a Chain Extender

“…However, the T c of PBS in all the PLA/PBS/MCC composites was observed in the cooling run, suggesting that the MCC particles acted as nuclei for PBS crystallization. Moreover, the T cc of PBS in all composites was not found, indicating that all the PBS fractions crystallized during the cooling run [37].…”

A damage constitutive model for multi-scale polypropylene fiber concrete under compression and its numerical implementation

“…In terms of stress-strain curve-fitting figures of the specimens, (see Figures 7,8,9,10,11,12,13,14,15 and 16) the fitting degree in the declining stage was good and the curve shape did not change significantly. Therefore it can be simulated easily with the formula.…”

Biodegradable blends obtained via reactive blending of polylactide and polyamide-6

“…Previously, attempts were made to produce such materials via blending of PLA with polyamide-6 (PA-6) [9][10][11] through the introduction of a compitibilizing copolymer into the blend [12,13] and via blending of PLA with PA-11 and PA-12 [14,15]. Nevertheless, there were no macromolecular reactions between PLA (Bioflex ® ) and PA-6 in [9,10]; that is, the reactive compatibilization did not start, as evidenced by the selective extraction.…”

“…Nevertheless, there were no macromolecular reactions between PLA (Bioflex ® ) and PA-6 in [9,10]; that is, the reactive compatibilization did not start, as evidenced by the selective extraction. The replacement of copolyester with pure PLA and the introduction of compatibilizers made it possible to achieve partial compatibility of the polymers [13]. It is important that the presence of copolymers was confirmed by complex viscosity measurements and DSC studies.…”

“…(a-f)1 H NMR and (g-k)13 C NMR spectra of (a, g) 100 : 0, (b, h) 80 : 20, (c, i) 50 : 50, (d, j) 20 : 80, and (e, k) 0 : 100 samples and (f) the extract. The insert in panel b shows the enlarged image of the marked part.…”