Abstract:A series of polycarbonate (PC), reinforced with short glass fiber (SGF) in different weight ratios viz., 10, 20 and 30%, has been fabricated by melt mixing with the aid of a twin screw extruder, in order to study the influence of glass fiber reinforcement on PC. The test specimens were fabricated as per ASTM standards and evaluated for their physico-mechanical properties. Incorporation of short glass fiber to PC enhances the tensile behavior of the composites significantly. The morphological behavior of PC com… Show more
“…From the overall observations, the impregnation of fiber content in the polymer influences the properties of the composites. 32 In this study, flexural strength of the hybrid composite increases with increase in fiber content reaches the maximum value for 12 wt% basalt fiber. In injection molded composites it is difficult to determine the fiber orientation factor because it is function of the geometry, processing conditions and material composition.…”
This paper focuses on the mechanical behavior of Polylatic acid reinforced Basalt and Bagasse fibers. The most important aspect in formulating this hybrid composite with better mechanical properties is the optimization of interfacial bonding between the reinforcing bagasse fiber and basalt fiber and polymer matrix. The composite of different weight proportion of the materials is compounded using twin screw extruder. The specimens were prepared by injection molding and subjected to various mechanical testing under tensile, flexural, and impact loads. It was found that 84 wt% of polylactic acid, 12 wt% of Basalt fiber and 4 wt% of Bagasse fiber composite exhibits better mechanical properties compared to other composites taken for study in this research. The better tensile, flexural, and impact strength of 52.8 MPa, 82.2 MPa, and 3.39 KJ/m2 were observed. The results show that the fiber content in weight percentage is playing a major than the fiber length on the improvement of tensile, flexural, and impact properties. The mechanical behavior obtained through experiments witnessed that Bagasse/Basalt fiber reinforcement in polylactic acid composites can be used as medium-load applications because of its low cost and ease of decomposability. The scanning electron microscope photography of the tested specimens shows better interfacial bonding between matrix and fibers. Also, the water absorption test indicates increase in fiber content increases the water absorption rate, reveals good degradation property of the composite. Additionally, the use of Bagasse fiber promotes the degradation of the material after its life time.
“…From the overall observations, the impregnation of fiber content in the polymer influences the properties of the composites. 32 In this study, flexural strength of the hybrid composite increases with increase in fiber content reaches the maximum value for 12 wt% basalt fiber. In injection molded composites it is difficult to determine the fiber orientation factor because it is function of the geometry, processing conditions and material composition.…”
This paper focuses on the mechanical behavior of Polylatic acid reinforced Basalt and Bagasse fibers. The most important aspect in formulating this hybrid composite with better mechanical properties is the optimization of interfacial bonding between the reinforcing bagasse fiber and basalt fiber and polymer matrix. The composite of different weight proportion of the materials is compounded using twin screw extruder. The specimens were prepared by injection molding and subjected to various mechanical testing under tensile, flexural, and impact loads. It was found that 84 wt% of polylactic acid, 12 wt% of Basalt fiber and 4 wt% of Bagasse fiber composite exhibits better mechanical properties compared to other composites taken for study in this research. The better tensile, flexural, and impact strength of 52.8 MPa, 82.2 MPa, and 3.39 KJ/m2 were observed. The results show that the fiber content in weight percentage is playing a major than the fiber length on the improvement of tensile, flexural, and impact properties. The mechanical behavior obtained through experiments witnessed that Bagasse/Basalt fiber reinforcement in polylactic acid composites can be used as medium-load applications because of its low cost and ease of decomposability. The scanning electron microscope photography of the tested specimens shows better interfacial bonding between matrix and fibers. Also, the water absorption test indicates increase in fiber content increases the water absorption rate, reveals good degradation property of the composite. Additionally, the use of Bagasse fiber promotes the degradation of the material after its life time.
“…As shown in Figure 6(a), compared with untreated samples, the impact strength increased greatly to nearly 80 kJ/m 2 by 700% when press temperature was between 20°C and 90°C, compressed at 5 mm/s. Interestingly, this pure PC was excellent due to its maximum strength reaching or even surpassing the properties of some PC composites 3,13 . However, the value of strength began to decrease to 60 kJ/m 2 as temperature ascended to 120°C.…”
Section: Resultsmentioning
confidence: 94%
“…Considerable studies demonstrated the approach of adding fillers, which combine PC with other fibers or particles to obtain high strength 1,13,14 . Jawali et al 13 prepared a series of PCs reinforced by short glass fibers through melt processing of a twin screw extruder. The results indicated that the tensile strength, elastic modulus and bearing capacity of composites improved significantly.…”
Through a uniaxial hot compression method, polycarbonate (PC) plates were self-reinforced effectively by press-induced deformation. Relationships between macroscopic mechanical properties including tensile, impact as well as viscoelastic properties, and microscopic status such as morphologies and orientation were obtained in deformed PC plates. Results showed that PC plates which were compressed at appropriate temperatures (20 C-120 C) obtained simultaneous enhancements in tensile strength (28%), elastic modulus (38%) and impact strength (700%), compared with the original plate. The impact fracture morphologies of deformed PC plates revealed evident ductile breakage. Wide-angle X-ray diffraction investigations were conducted to attribute mechanical behavior to molecular segment orientation, which was more sensitive to temperature. Self-reinforced mechanism was proposed to analyze the high correlation between various orientations of molecular segments and corresponding mechanical performance, explained by storage and loss moduli in dynamic mechanical analysis as supplemental verification. Press-induced deformation was proved to be a potentially effective method for the self-reinforcement treatment for PC transparent products.
“…The optimum weight percentage of BF and CQ was found to be 12% and 0.5% respectively that augmented the mechanical properties of the composites. 38 Thus, PBCQ 2 shows high mechanical effective mechanical properties compared to less filled silane-treated basalt fibers and CQ fibers PBCQ 1 and PBCQ 3 composites. 41 Figure 9.SEM image of (a) fractured PBCQ 1 impact specimens; (b) fractured PBCQ 2 impact specimens; (c) fractured PBCQ 3 impact specimens.…”
Section: Discussion On Experimental Resultsmentioning
confidence: 95%
“…37 In this study, it is clearly identified that the increase in the BF content (12 wt%) in PLA in the polymer composite with 0.5 wt% of CQ exhibits better flexural strength. 38…”
Section: Discussion On Experimental Resultsmentioning
In today's scenario, most of the research works are carried out on the replacement of synthetic fibers using eco-friendly materials called natural fibers. Although there are many research findings in connection with natural fibers, in this work, a new combination of natural fiber having high biomedical potential is reinforced in the polymer composite. Three different weight fractions of polylactic acid, basalt, and Cissus quadrangularis fibers were melt mixed using twin-screw extruder named as PBCQ 1, PBCQ 2, and PBCQ 3. The mechanical, physical, and thermomechanical properties were studied by testing tensile, flexural, impact, hardness, water absorption, Fourier-transform infrared spectroscopy, and dynamic mechanical analysis of the injection-molded biomedical composite specimens prepared as per ASTM standards. It was noticed that the PBCQ 2 composite has the maximum elongation strength, bending strength, shear strength, and shore D hardness compared to other composites taken in this study. Water absorption of PBCQ 1 and PBCQ 2 composites are relatively less than PBCQ 3. The scanning electron microscopy micrograph of PBCQ composites shows tight bonding between the matrix and fibers. The adhesion of matrix and fibers was confirmed by Fourier-transform infrared spectroscopy graph, which indicates the stretching of molecular structure for the occurrence of O–H, C=O, and C–H links. The dynamic mechanical analysis curve of the PBCQ 2 composite indicates high storage modulus and less loss modulus compared to PBCQ 1 and PBCQ 3 due to the low weight percentage of basalt fiber in these composites.
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