2.3.5. Water Absorption Test

The molded samples (size 10 × 10 × 0.5 mm) were immersed in distilled water for a different interval of time at room temperature. For each interval, the samples were gently wiped with soft tissue paper to remove the excess water on the surface. The water absorption (%) was calculated using Equation (2):

$$\text{Water absorption (\%)} = \frac{\mathcal{W}\_f - \mathcal{W}\_i}{\mathcal{W}\_f} \tag{2}$$

where *w<sup>f</sup>* is the weight of the sample after immersion and *w<sup>i</sup>* is the sample weight before immersion.
