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2025 ; 15
(1
): 37174
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Development of hybrid fiber-reinforced vinyl ester composites for civil and
automotive applications
#MMPMID41131351
Vignesh V
; Karthik Babu NB
; Arun Mohan AM
; Sathees Kumar S
; Nagaprasad N
; Ayrilmis N
; Krishnaraj R
Sci Rep
2025[Oct]; 15
(1
): 37174
PMID41131351
show ga
Building and automotive sectors are accelerating the development of biodegradable
hybrid natural fiber composites due to their potential for lightweight structural
applications and their significant environmental benefits. This study focused on
improving the mechanical properties of vinyl ester polymer composites through the
hybridisation of natural fiber mats made from sisal, Indian mallow, roselle and
banana fibers. Tensile, flexural, impact and hardness properties, as well as the
thermal behaviour, of the hybrid biocomposites were investigated by producing
five different combinations of hybrid composite laminates and varying the
stacking arrangement of the natural fiber mats. The sisal/roselle fiber mat (SRM)
bio-composite sample exhibited optimum mechanical properties, with higher
tensile, flexural and impact strengths, as well as better thermal properties in
terms of heat deflection temperature, than the other samples of double-layer
sisal fiber mat (DSM), sisal/Indian mallow fiber mat (SIM) and sisal/banana fiber
mat (SBM) reinforced vinyl ester composites. The vinyl ester composite reinforced
with sisal/Indian mallow mat exhibited maximum impact strength and hardness
values of 213 kJ/m(2) and 72, respectively, compared to other composites. SEM
analysis of fractured samples confirmed good interfacial adhesion between the
hybrid sisal fiber and the vinyl ester matrix.