Designing new eco-friendly fibers enable the creation of an alternative resource for many applications, specifically within the field of polymeric composites. This paper details the fabrication of hybrid epoxy composites comprising natural fiber, Phoenix Pusilla plant dry leaves which belong to the family of date palm and nanofillers made from the fish bones, which has been explored for the first time. ASTM standards provided the guidelines for the preparation of samples and mechanical measurements. The mechanical properties of the pure carbon fiber composites were compared with that of the hybrid composites containing carbon fiber, natural fiber and nanofiller. The results validate the potential of hybrid composites containing novel fibers. Adding the bio-nanofillers in hybrid polymer composites permits the enhancement of the tensile strength, flexural strength, and hardness by 22.5%, 200%, 100% and 15.2% respectively.

Polyethylene glycol-400 (PEG) based polyurethane (PU) and polyacrylonitrile (PAN) semi-interpenetrating polymer networks (SIPNs) (PU/PAN; 90/10, 70/30, 60/40, and 50/50) have been prepared by sequential polymerization method. The prepared SIPNs have been characterized by physicomechanical properties. The microcrystalline parameters such as crystal size (͗N͘), lattice disorder (g), surface (D s ) and volume (D v ) weighted crystal size of SIPNs have been estimated using wide angle X-ray scattering studies, and quantification of the polymer network has been carried out on the basis of these parameters. The microstructural parameters have been established using Exponential, Lognormal, and Reinhold asymmetric column length distribution functions and the results are compiled.

Natural fibre composites find wide range of applications and usage in the automobile and manufacturing industries. They find lack in desired properties, which are required for present applications. In current scenario, many developments in composite materials involve the synthesis of Hybrid composite materials to overcome some of the lacking properties. In this present investigation, two sandwich structured hybrid composite materials have been made by reinforcing Aloe Vera-Ceramic Fibre Wool-Glass fibre with Epoxy resin matrix and Sisal fibre-Ceramic Fibre Wool-Glass fibre with Epoxy resin matrix and its mechanical properties such as Tensile, Flexural and Impact are tested and analyzed. The test results from the two samples are compared and the results show that sisal fibre reinforced hybrid composite has better mechanical properties than aloe vera reinforced hybrid composite.

ABSTRACT:We have determined the crystallite size of Twaron fibers heat treated at various temperatures by analyzing the wide angle X-ray scattering (WAXS) data employing a profile analysis technique developed by us. This study indicates that the differential change of size with temperature is less than 1% of the mean value along both (110) and (200) directions. Hence, these fibers are thermally stable and thermal aging is negligible. We have also observed that the lattice strain variation with temperature is negligible. These studies demonstrate the thermal stability of fibers in terms of the changes in the microcrystalline parameters.

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The work presents the mechanical investigation of composite materials that are meant to perform under different temperature condition with the application of tensile loading. The composite under study is developed using reinforcement materials made out of basalt and S-glass fiber reinforced with polymer matrix composite (epoxy resin) by hand layup technique with different compositions by changing the fiber layer sequence starting with pure form to hybrid once (fiber architecture). The test results reveals, that the tensile properties of the hybrid composites with fiber architecture of 2/2 basalt mixed S-glass fiber reinforced with epoxy composites are at its optimal level in both normal and elevated temperature conditions. Basalt fiber being good temperature resistant and S-glass fiber having high strength, with this hybrid combination, the material has out played under tensile force being applied when compared with other samples under test.

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