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Influence of Concentrations of Alkali Treatment on Mechanical and Dynamic Mechanical Properties of Hemp/Polyester Composite

Manoj Kumar Gupta, R. K. Gond


In present work, hemp fibres were subjected to alkali treatments at various concentrations (5, 10 & 15 wt.%) to prepare its polyester based composites.  Hemp fibre reinforced polyester composites were prepared by hand lay-up technique followed by static compression keeping constant 25 wt.% of fibres content in order to study influence of alkali treatment concentrations on its mechanical and dynamic mechanical properties. Mechanical properties of prepared composites were  studied in terms of tensile strength and modulus, and flexural strength and modulus whereas dynamic mechanical properties were studied in terms of storage modulus (), damping (), glass transition temperature (Tg) and effectiveness constant of reinforcement ().  The results indicated that mechanical and dynamic mechanical properties were found to increase  due to alkali treatment up to 5%  concentration and then decrease.



Alkali treatment; Dynamic Mechanical Properties; Hemp composite; Mechanical properties

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Bisaria H, Gupta M K, Sandilya P, Srivastava R K. Effect of fibre length on mechanical properties of randomly oriented short jute fibre reinforced epoxy composite. Mater Today. 2015, 2:1193-1199

Gupta M K, Srivastava R K. Properties of sisal fibre reinforced epoxy composite. Indian J Fib Text Res. 2016, 41:235-241

Mourya Hariom, Gupta M K, Srivastava R K, Singh H. Study on the mechanical properties of epoxy composite using short sisal fibre. Mater Today. 2015, 2:1347-1355

Gupta M K, Srivastava R K. Tensile and flexural properties of sisal fibre reinforced epoxy composite: A comparison between unidirectional and mat form of fibres. Procedia Mater Sci. 2014, 5:2434-2439

Gupta M K, Srivastava R K. Mechanical, thermal and water absorption Properties of hybrid sisal/jute fibre reinforced polymer composite. Indian J Engg Mater Sci. 2016, 23; 231-238.

Alawar A. Hamed A M, Al-Kaabi K. Characterization of treated date palm tree fibre as composite reinforcement. Comp: Part B. 2009, 40:601-606

Gupta M K, Srivastava R K. Effect of sisal fibre loading on wear and friction properties of jute fibre reinforced epoxy composite. American J Polym Sci Eng. 2015, 3:198-207

Gupta M K, Srivastava R K. Thermal and moisture absorption property of hybrid sisal and jute epoxy composite. Adv Polym Sci Technol: An Int J. 2015, 5:51-54

Gupta M K, Srivastava R K. Mechanical properties of hybrid fibres reinforced polymer composite: A Review. Polym Plast Technol Eng. 2016, 55:626-642

Gupta M K, Srivastava R K, Bisaria H. Potential of jute fibre reinforced polymer composites: A review. Int J Fib Text Res. 2015, 5:30-38

Ahmed K S, Vijayarangan S. Tensile, flexural and interlaminar shear properties of woven jute and jute-glass fabric reinforced polyester composite. J Mater Process Technol. 2008, 207:330-335

Gupta M K, Srivastava R K, Kumar S, Gupta S, Nahak B. Mechanical and water absorption properties of hybrid sisal/glass fibre reinforced epoxy composite. American J Polym Sci Eng. 2015, 3; 208-219.

Kabir M M, Wang H, Lau K T, Cardona F. Chemical treatments on plant based natural fiber reinforced polymer composites: an overview. Comp: Part B. 2012, 43:2883-2892.

Shanmugam D, Thiruchitrambalam M. Static and dynamic mechanical properties of alkali treated unidirectional continuous Palmyra Palm Leaf Stalk Fibre/jute Fibre reinforced hybrid polyester composites. Mater Des. 2013, 50:533-542

Gupta M K, Srivastava R K. Tribological and dynamic mechanical analysis of epoxy based hybrid sisal/jute composite. Indian J Engg Mater Sci. 2016, 23:37-44

Govardhan G, Rao R N. Effect of fibre content and alkali treatment on mechanical properties of Roystonea regia reinforced epoxy partially biodegradable composites. Bull Mater Sci. 2011, 34:1575-1581

Rout J, Misra M, Tripathy S S, Nayak S K, Moahnthy A K. The influence of fibre treatment on the performance of coir polyester composites. Compos Sci Technol. 2001, 61:1303-1310

El-Abbassi F E, Assarar M, Ayad R, Lamdouar N. Effect of alkali treatment on Alfa fibre as reinforcement for polypropylene based eco-composites: mechanical behaviour and water ageing. Comp Struct. 2015, 133:451-457

Shahzad A. Hemp fibre and its composites – A Review. J Comp Mater. 2011, 46:973-986

Li X, Tabil L G, Panigrahi S. Chemical Treatments of Natural Fibre for Use in Natural Fibre-Reinforced Composites: A Review. J Polym Environ. 2007, 15:25-33

Gupta M K, Srivastava R K. Effect of sisal fibre loading on dynamic mechanical analysis and water absorption behaviour of jute fibre epoxy composite. Mater Today: Proceed. 2015, 2:2909-2917

Gupta M K. Dynamic mechanical and thermal analysis hybrid jute/sisal fibre reinforced epoxy composite. J Mater Des Appl, Part-L, DOI:10.1177/1464420716646398


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