Title of the Research Chemically modified Jute fabric reinforced novolac epoxy resin composite Introduction Besides the multiple advantages of environment friendly Jute as reinforcing elements in composite, the high moisture absorption and chemical incompatibility with the matrix limits the mechanical, optical and chemical properties of composite. A lot of research works have been performed all over the world on the use of cellulosic fibers as a reinforcing material for the preparation of various types of composites.
However, lack of good interfacial adhesion, chemical compatibility, and water ensitivity make the use of cellulosic fiber reinforced composites less attractive. Pre- treatments of the Jute fibers can modify the fiber surface, such as chemical functionalization stop the moisture absorption process, develop the desirable functionality and increase the surface roughness, which chemically and mechanically interlock Jute fiber with matrix . In this research, chemically modified Jute fabric would be used in Jute-novolac epoxy composite system for the better physical and chemical attachment of reinforcement and matrix phases.
Objectives: Due to the hydrophilic nature of Jute, the interfacial interaction with novolac epoxy resin is weak. The modification with appropriate monomers could provide better interfacial bonding between Jute and novolac epoxy resin which leads to improve mechanical and chemical properties of final composite compare to the unmodified fiber reinforced composite. Methodology: Jute fabric collected from the local market will be scoured by sodium carbonate and nonionic detergent and then bleached with hydrogen peroxide. The bleached Jute abric will be treated with Na104 to form oxy Jute and then grafted with PEGI 500.
The impregnation of the fabrics with aqueous formulations containing different specific doses of PEGI 500 will chemically modify the treated fabric. This treatment would transform the cellulosic chains of the substrate fibers to acetal or hemiacetal derivatives . Novolac resins will be prepared by reacting phenol with formaldehyde in a specific molar ratio with oxalic acid as catalyst which after reaction with epichlorohydrine gives novalac epoxy resin. Then composite will be fabricated y sandwiching Jute fabric in novolac epoxy beds.
Different characterization such as thermal properties, tensile properties, optical properties, hardness, flexibility etc would be performed to check the final properties of fabricated composite. Socio- economic Importance: Jute a lingo-cellulosic polymer is the most abundant renewable agricultural raw material which played a vital role in our economy and so called as the ‘Golden fibre of Bangladesh’. But now-a-days the highly durable, lustrous, attractive and cost effective synthetic counter products occupied the market of Jute products.
However, the non- biodegradability of synthetic product diminishes its advantages over Jute products. Biodegradability of Jute products would certainly give back its bright golden past if modification. Our attempt is to find out appropriate chemical modification, and afterword focusing the better application of Jute as composite materials that could replace the currently market dominating synthetic counter products. We believe, the success of the project might impose a positive sign in the national economy. Time frame: Serial No. Name of the milestone Duration
Activity-Ol Sample collection & literature survey. 2 months Activity-02 Chemical modification of Jute fabric Activity-03 Formation of novolac epoxy resin and composite 6 months Activity-04 Data analysis & thesis paper/report writing Conclusion Chemical modification of Jute can make it a very potential candidate in making of composites, especially for partial replacement of high-cost glass fibers for low load bearing applications. As such, commercial exploitation of Jute composites for non- structural applications promises excellent potential.
The abundant agricultural roduct could be valuable raw materials for the highly demanded furnished modern products. Beside the domestic usage, exporting the Jute-composite products could play a vital role in our economy. References 1. Vazqueza and D. Plackett, Natural polymer sources (Woodhead Publishing Ltd & CRC) press LLC, 2004) Chap. 7, pp. 123- 125. 2. X. Y. Liu and G. C. Dat, eXPRESS polymer Lett. 1(5), 299 (2007). 3. Ghosh P, Das D. J Applpolymsct 4. Hoareau, W. ; Oliveira, F. B. ; Grelier, S. , Siegmund, B. ; Frollini,E. ; Castellan, A. Macromol Mater Eng 2006, 291, 829