Interfacial Properties of Bamboo Fiber-Reinforced High-Density Polyethylene Composites by Different Methods for Adding Nano Calcium Carbonate

Abstract

Abstract:The focus of this study was to observe the effect of nano calcium carbonate (CaCO 3 ) modification methods on bamboo fiber (BF) used in BF-reinforced high-density polyethylene (HDPE) composites manufactured by extrusion molding. Two methods were used to introduce the nano CaCO 3 into the BF for modification; the first was blending modification (BM) and the second was impregnation modification (IM). In order to determine the effects of the modification methods, the water absorption, surface free energy and interfacial properties of the unmodified composites were compared to those of the composites made from the two modification methods. The results revealed that the percentage increase in the weight of the composite treated by nano CaCO 3 decreased and that of the IMBF/HDPE composite was the lowest over the seven months of time. The results obtained by the acid-base model according to the Lewis and Owens-Wendt-Rabel-Kaelble (OWRK) equations indicated that the surface energy of the composites was between 40 and 50 mJ/m 2 . When compared to the control sample, the maximum storage modulus (E max ) of the BMBF/HDPE and IMBF/HDPE composites increased 1.43-and 1.53-fold, respectively. The values of the phase-to-phase interaction parameter B and the k value of the modified composites were higher than those of the unmodified composites, while the apparent activation energy Ea and interface parameter A were lower in the modified composites. It can be concluded that nano CaCO 3 had an effect on the interfacial properties of BF-reinforced HDPE composites, and the interface bonding between IMBF and HDPE was greatest among the composites.

The reinforcing mechanism of mechanical properties of bamboo fiber bundle‐reinforced composites

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Mussel-Inspired Polydopamine as a Green, Efficient, and Stable Platform to Functionalize Bamboo Fiber with Amino-Terminated Alkyl for High Performance Poly(butylene succinate) Composites

“…Reinforcements with lower surface energy promotes the wettability of the as-reinforced low polar polymer and significantly enhances the interfacial properties [27]. The surface free energies of the BF samples were calculated according to Young’s equation, as shown in Equation (4) [26]:γS=γLcosθ + γSL, where γ S , γ L , and γ SL represent the surface tension of the solid, liquid, and solid–liquid interfaces, respectively. θ represents the initial contact angle between the solid ( S ) and the liquid ( L ) interfaces.…”

Combination of Magnetic Lignocellulosic Particles, High-Density Polyethylene, and Carbon Black for the Construction of Composites with Tunable Functionalities

“…However, there was no clear interface between magnetic lignocellulosic particles and HDPE. The improvement in interface compatibility was due to the surface effect of nanoparticles [ 34 , 35 ]. The fracture surface of the matrix in the original biocomposite was smoother than that in the magnetic biocomposites ( Figure 5 c,d).…”