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Composites (50 wt% fiber) of jute fiber reinforced polyvinyl chloride (PVC) matrix and E-glass fiber reinforced PVC matrix were prepared by compression molding. Mechanical properties such as tensile strength (TS), tensile modulus (TM), bending strength (BS), bending modulus (BM) and impact strength (IS) of both types of composites was evaluated and compared. Values of TS, TM, BS, BM and IS of jute fiber/PVC composites were found to be 45 MPa, 802 MPa, 46 MPa, 850 MPa and 24 kJ/m2, respectively. It was observed that TS, TM, BS, BM and IS of E-glass fiber/PVC composites were found to increase by 44, 80, 47, 92 and 37.5%, respectively. Thermal properties of the composites were also carried out, which revealed that thermal stability of E-glass fiber/PVC system was higher. The interfacial adhesion between the fibers (jute and E-glass) and matrix was studied by means of critical fiber length and interfacial shear strength that were measured by single fiber fragmentation test. Fracture sides after flexural testing of both types of the composites were investigated by Scanning Electron Microscopy. [ABSTRACT FROM AUTHOR]

A composite based on gelatin fiber-reinforced linear low-density polyethylene (LLDPE) matrix was fabricated using compression molding. Two layers of gelatin fibers were sandwiched with three layers of LLDPE sheets. Gelatin fiber was prepared from 20% gelatin-based aqueous solution by extrusion method. Composites with varying percentages of gelatin fiber (1-10%) were made. The mechanical properties such as tensile strength (TS), bending strength (BS), elongation at break (Eb), tensile modulus (TM), bending modulus (BM,) and hardness were taken. TS, TM, Eb (%), TM, BM, and hardness of the composite (10% fiber) were found to be 1.67 MPa, 1.14 MPa, 96%, 25.8 MPa, 507.6 MPa, and 92 shore A, respectively. The density of the composite with 10% gelatin fiber was found to be 0.66 g/cm³, which was less than the density of gelatin (1.58 g/cm³) and LLDPE (0.905 g/cm³). The water uptake capacity of the composite with 10% gelatin fiber was found to be 16.65% after 60 min. [ABSTRACT FROM AUTHOR]

Jute fiber mat (hessian cloth) reinforced PET-based composites (50% fiber by weight) and E-glass fiber matreinforced PET based composites (50% fiber by weight) were fabricated by compression molding and the mechanical properties tensile strength (TS), tensile modulus (TM), elongation at break (%), bending strength (BS), bending modulus (BM), impact strength (IS) and hardness (Shore-A) of the composites were evaluated and compared. The interfacial properties of the both composites were also compared. Water uptake test and soil degradation test were also investigated. [ABSTRACT FROM AUTHOR]

There is a growing interest in the use of composite materials. Silk fiber/gelatin biocomposites were fabricated using compression molding. The fiber content in the composite varied from 10-30 wt%. Composite containing 30 wt% silk showed the best mechanical properties. Tensile strength, tensile modulus, bending strength, bending modulus and impact strength, hardness of the 30% silk content composites were found 54 MPa, 0.95 GPa, 75 MPa and 0.43 GPa and 5.4 kJ/m2, 95.5 Shore A, respectively. Water uptake properties at room temperature, accelerated weathering aging, irradiation, thermomechanical analysis, and degradation in soil were carried out in this experiment. [ABSTRACT FROM AUTHOR]

Linear low density polyethylene (LLDPE) matrix calcium alginate fiber reinforced unidirectional composites (10% fiber by weight) were fabricated by compression molding. Tensile strength, tensile modulus, bending strength, bending modulus and impact strength were found to be 19 MPa, 696 MPa, 32 MPa, 1150 MPa and 18 kJ/m2, respectively. Degradation tests of composites were performed for twelve weeks in soil and it was found that composites retained almost 70% of its original strength. The interfacial shear strength (IFSS) of the composites was also measured by single fiber fragmentation test (SFFT). [ABSTRACT FROM AUTHOR]

Jute fiber (hessian cloth)-reinforced polypropylene matrix composites (50wt% fiber) were fabricated by compression molding. Tensile strength, tensile modulus, bending strength, bending modulus, and impact strength of the composites were found to be 48 MPa, 2.5 GPa, 56 MPa, 4.5 GPa, and 18 kJ/m², respectively. Then E-glass fiber (woven)-reinforced polypropylenebased composites (50 wt% fiber) were fabricated and the mechanical properties were compared with those of the jute-based composites. It was revealed that E-glass fiber-based composites had almost double the mechanical properties as compared to jute composites. The interfacial shear strength of the jute and E-glass fiber-based systems was investigated and found to be 2.13 and 4.66 MPa, respectively, measured using the single-fiber fragmentation test. Fracture sides after flexural testing of both types of the composites were studied by scanning electron microscope and the results revealed poor fiber matrix adhesion for jute-based composites when compared to that of the E-glass fiber composites. [ABSTRACT FROM AUTHOR]

Jute yarn reinforced polypropylene (PP) composites were prepared by compression molding. To prepare the composites, jute yarns were treated with 1-5% aqueous starch solution (w/w) varying different soaking time (1-5 mins). The yarn content in the composite was about 50% by weight. Starch treated jute composites showed higher mechanical properties than that of the untreated jute composites. Composites prepared with 3% starch treated yarns (for 3 mins soaking time) demonstrated the highest mechanical properties (optimized), i.e., tensile strength 52 MPa, tensile modulus 700 MPa, bending strength 50 MPa and bending modulus 1406 MPa. Optimized composite was then treated with gamma radiation (Co-60) at a dose of 500 krad and found further improvement of the mechanical properties. Water uptake of the composites at room temperature (25°C) was measured and found that starch treated samples showed higher water uptake properties than the control sample. After 500 hrs of simulating weathering testing, optimized composites retained its 75% TS and 93% TM. [ABSTRACT FROM AUTHOR]