Table 2: Taguchi orthogonal array of designed experiments (coded units).

Experiment numberFactors
Base material, A Binder, B Plasticizer, C

1−1−1−1
2−1−1+1
3−1+1−1
4−1+1+1
5+1−1−1
6+1−1+1
7+1+1−1
8+1+1+1