Preparation and characterization of wood‐fiber‐reinforced polyamide 6–polypropylene blend composites

Abstract

In this study, we used lithium chloride (LiCl) as a modifier to decrease the melting temperature (T m) of polyamide 6 (PA6), and then, we fabricated wood‐fiber‐reinforced PA6–polypropylene (PP) blend composites via hot pressing. From crystallization analysis, the composites exhibited a lower T m and a lower processing temperature compared to PA6. Color and Fourier transform infrared analyses showed that severe thermal degradation and discoloration of the composites could be prevented by the incorporation of LiCl. LiCl had positive effects on the mechanical properties of the final product and the interfacial compatibility among PA6, PP, and wood fiber. The flexural strength increased by 8.5%. In addition, both maleic anhydride grafted PP and wood fiber improved the mechanical properties. The flexural strengths increased by 7.9 and 40%, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47413.

Wood Plastic Composites: Their Properties and Applications

“…The addition of 2 wt%-2.5 wt% LiCl to the MA-g-PE polymer matrix led to a maximum flexural strength, flexural modulus, and impact strength of the PE-based WPC that exceeded 100 MPa, 6000 MPa, and 12 kJ/m 2 , respectively. Similarly, the maximum flexural strength, flexural modulus, and impact strength of the PP-based WPC with 1 wt% LiCl were 115 MPa, 6500 MPa, and 10 kJ/m 2 , respectively [33].…”

Preparation of stiffer ternary blends of polypropylene/polyamide 6/biodegradable polymers with improved interfacial adhesion

“…Even being incompatible with PP, PA6 has been used to address the PPs deficiencies, expanding its applications. [6][7][8][9] Multicomponent polymeric mixtures are usually prepared by melt mixing of two or more miscible or immiscible polymers. The blending of polymer is a powerful route for obtaining new materials combining existing desired properties in specific neat polymers, adapting them to satisfy a wide range of uses.…”

“…Still, it has some limitations such as low‐impact resistance at low temperatures, swelling in hydrocarbon solvents, and relatively low‐gas barrier property. Even being incompatible with PP, PA6 has been used to address the PPs deficiencies, expanding its applications 6–9 …”