Abstract
Chemically treated jute fabric (TJF)- and untreated jute fabric (UJF)-reinforced isotactic polypropylene (PP)-sandwiched composites, such as TJF composite (TC) and UJF composite (UC), with different JF contents (35–60 wt%) were fabricated by the compression molding technique. Then, PP, UC and TC were irradiated by γ–rays with various doses (0–7.5 kGy) to produce γPP, γUC and γTC, respectively. Water intake (WI), chemical texture, tensile strength (TS), flexural strength (FS), Young’s modulus (Y) and thermal degradation temperatures (T d) of the samples were examined. Activation energy (E a) during thermal degradation has been estimated by Broido’s theory. WI in TC, γUC and γTC is lower than that in UC, as accompanied by the change in interfacial textures between JF and PP. The TS, FS, Y, T d and E a values of UC, TC, γUC and γTC are found to lie in the ranges 52–61, 55–63, 440–710 MPa, 400–440 °C and 280–340 kJ/mol, respectively. A relative estimation of physical and chemical crosslinking densities/junctions in the composites has been performed and the values have been analyzed by the rubber elasticity and polymer gel theories. The observed changes in physico-mechanical and thermal properties of the composites have been explained on the basis of crosslinking/bonding between JF and PP. Fourier transform infrared spectroscopy confirms the fiber–matrix interactions. A significant increase in Y and T d values demonstrates a development of strong and thermally more stable JF-reinforced PP composites in the present study.
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The authors greatly acknowledge the Bangladesh University of Engineering and Technology (BUET) to provide financial support for this investigation. They are grateful to the Atomic Energy Research Establishment (AERE), and Bangladesh Council of Scientific and Industrial Research (BCSIR) to allow facilities for this research.
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Shohrawardy, M.H.S., Alam, M.K., Mina, M.F. et al. Fabrication of strong and thermally more stable jute fabric/polypropylene composites by compression molding along with γ-ray irradiation. Polym. Bull. 71, 1219–1239 (2014). https://doi.org/10.1007/s00289-014-1120-7
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DOI: https://doi.org/10.1007/s00289-014-1120-7