**4. Conclusions**

The dynamic mechanical properties of coir and coconut husk particulate reinforced composites immersed in an acid solution over periods of 14 and 28 days

*Fillers - Synthesis, Characterization and Industrial Application*

**3.2 Loss modulus (E″)**

cause a decline in the ability of the composite to store energy.

to which the degradation in the fiber/filler/matrix interface can be ascribed, and subsequently allows tightly bound molecules to move with the applied force and

The results in **Figures 4**–**6** for control, 14P and 28P samples, respectively, show that upon frequency variation, the values of loss modulus (E″) decreased, but an exception was noticed in this trend for the 14P sample. Values of loss modulus recorded for the polymers at low temperatures where the molecules are still

**40**

**Figure 5.**

**Figure 4.**

*Loss modulus curves of 14P sample under varying frequencies.*

*Loss modulus curves of control sample under varying frequencies.*
