Mechanical and thermal properties of chemical treated kenaf fibres reinforced polyester composites

Abstract

Kenaf fibre reinforced polyester biocomposites fabricated by hand lay-up technique by using propionic and succinic anhydride-modified kenaf fibres. Chemical structure, mechanical, thermal and morphological properties of kenaf fibres reinforced polyester biocomposites evaluated. The Fourier transform infrared study of modified kenaf fibres carried out to look at changes in functional groups after modification. It confirmed from Fourier transform infrared spectroscopy the variation in positions of functional groups. The mechanical (tensile, flexural and impact) property results revealed that biocomposites with modified kenaf fibres exhibited better properties as compared to untreated kenaf fibres-reinforced polyester biocomposites. Morphological studies show that treated kenaf biocomposites show better fibre/matrix interaction. Thermal analysis results of modified biocomposites exhibited higher initial and final decomposition temperatures. Modified biocomposites display less char residue as compared with unmodified kenaf fibres reinforced polyester composites.

Isolation and Characterization of Cellulose Nanofibers fromGigantochloa scortechiniias a Reinforcement Material

“…Nanoscale cellulose fibers can be isolated from various cellulosic sources by a number of isolation methods, including various mechanical treatments which can be used in combination or independently. Researchers have combined mechanical processes such as refining [14] and cryocrushing [15] with pretreatment of cellulosic fiber by means of physical, chemical, or enzymatic hydrolysis [7,10,16,17] to improve the mechanical and barrier properties of extracted bamboo fiber-reinforced composites.…”

“…The utilization of bamboo fibers in composites has attracted interest because of its biodegradability and clean emissions [6,7]. The incorporation of bamboo fiber improves certain properties of the polymer composite matrix (i.e., fracture toughness and impact behavior); however, flexural strength of composites was not significantly affected [8][9][10]. It is believed that the poor compatibility between the cellulose and polymer matrix causes the low flexural strength in cellulose reinforced composite materials.…”

Nanoclay infused banana fiber and its effects on mechanical and thermal properties of composites

“…[1][2][3] The significances of using natural fiber reinforced polymer composites are multifold, with few being, environmental friendly, less health problem, low cost, and comparative thermal and mechanical properties when compared with synthetic fiber reinforced composites. Many natural fibers such as sisal, 4 kenaf, 5 coir, 6 and jute 7 fibers have proven valuable alternative to synthetic fibers. Over the past 10 years, the development of banana fiber reinforced composites has also attracted significant research interest.…”

A Review on the Kenaf/Glass Hybrid Composites with Limitations on Mechanical and Low Velocity Impact Properties

“…Kenaf fibre tends to absorb moisture because of its hydrophilic nature. Therefore, chemical treatment is applied to modify the fibre surface by removing the hydroxyl groups and impurities from the fibre [ 62 ]. A few chemical treatments can be performed to modify the kenaf fibre surface, such as alkaline treatment, silane treatment and a combination of alkaline and silane treatment [ 63 ].…”

“…Two different concentrations of NaOH solution, of 6% and 9%, had been used to treat kenaf fibre for 12 h. The impact strength of the composite comprising fibre treated with 6% NaOH concentration was 15.77 kJ/m 2 , while that of the composite with fibre treated with 9% NaOH concentration was 6.92 kJ/m 2 [ 49 ]. Kenaf fibre treated with propionic anhydride gave better impact strength results, of 7.7 kJ/m 2 , compared to kenaf fibre treated with succinic anhydride and untreated fibre, which recorded 7.3 and 5.4 kJ/m 2 , respectively [ 62 ]. A previous study compared the impact strength of untreated and treated woven kenaf-banana hybrid composites.…”