2.2.1. Microfibrillar Angle (MFA)

The microfibril angle (MFA) was determined in association with the cellulose peak (0 0 2), according to the methodology described by Cave [33]. Cave's methodology is the most accurate method for calculating the MFA. Based on XRD, it suggests that the estimation of MFA occurs from the relationship between three curves obtained from the peak associated with the highest intensity, and namely it is Gaussian along with the firstorder and second-order derivatives. Through this analysis, a "*T*" parameter is obtained and applied in the following polynomial Equation (5).

$$\text{MFA} = -12.19 \ast T^3 + 113.67 \ast T^2 - 348.40 \ast T + 358.09 \tag{5}$$
