Effect of initial imbibed moisture content on flexural fatigue behavior of polyamide 66/hectorite nanocomposites at laboratory condition

▶ Imbibed moisture content reduces the cyclic softening of nanocomposites (PA66CN). ▶ Imbibed moisture content increases the fatigue life of PA66CN. ▶ PA66CN retains its enhanced fatigue resistance in moisture conditioned state. ▶ Enhancement in fatigue resistance decreases as imbibed moisture content increases. ▶ The rubbery behavior is related to difference between specimen temperature and Tg.