Effect of a novel treatment fiber on mechanical properties, thermal stability and crystallization behaviors of epoxy soybean oil toughened jute fiber/polypropylene composites

Abstract

In this work, a novel fiber treatment method is introduced in the preparation of epoxy soybean oil (ESO) toughened jute fiber/polypropylene (PP) matrix composites. The jute fibers are pre‐treated by r‐valerolactone (GVL), and the ESO/jute fiber/PP composites are fabricated by melt blending. The microstructure of the treated fiber, the mechanical properties, thermal stability, and crystallization behaviors of the composites are investigated and discussed in detail. The results show that the surface of GVL treated fiber becomes rough and the aspect ratio increases. It is found by scanning electron microscopy (SEM) that the interface between the fiber and matrix debones seriously without the addition of ESO. With increasing the content of ESO, the toughness and thermal stability of the composites are gradually improved. The tensile strength of the composites containing 5% ESO reaches 42.2 MPa. In addition, the impact strength and elongation at break are higher than pure PP and PP/jute composites. Moreover, GVL treated fibers can improve the thermal stability of PP/jute fiber composites. In addition, the crystallinity of PP in the PP composites increases first and then decreases, while the crystallization temperature of the composites decreases. At the same time, the complex viscosity of the composites also increases.

Biopolyethylene/macaíba shell (Acrocomia intumescens) composites compatibilized with PE‐g‐MA and PE‐g‐AA: Influence of macaíba oil on processing

“…The same behavior has been observed in the literature for various systems. [ 54–57 ] Among the composites developed, the BioPE/PE‐g‐MA/MS system showed the highest elastic modulus, suggesting that the PE‐g‐MA compatibilizer generated a higher level of interaction, corroborating the torque rheometry. Apparently, the PE‐g‐AA compatibilizer was not effective in improving the elastic modulus of the BioPE/PE‐g‐AA/MS composite, since it was below the result of the BioPE/MS system.…”

Utilization of discarded Cymbopogon flexuosus root waste as a novel lignocellulosic fiber for lightweight polymer composite application

“…Numerous health-related troubles such as allergy, cancer, living cell damage, and skin disease were caused by long-term exposure to glass fibers. [2,3] The above issues encourage researchers to look for feasible natural fibers in polymer reinforcement. Recent studies on the characterization of natural fibers carried out by various researchers for determining its feasibility in polymer composite reinforcing were illustrated in Table 1.…”

Bio‐based compatibiliser enhancing the interface properties of CaCO3/recycled high‐density polyethylene composites

“…4B present better interfacial properties, with an interfacial gap between the CaCO 3 particles and reHDPE matrix significantly reduced may be due to the interaction between the flexible chain of ESO-G-OA and molecular chain of reHDPE. [22,23] F I G U R E 3 TGA (A) and DTG curves (B) of ESO, ESO-G, and ESO-G-OA.…”