Response Surface Methodology for the Optimization of Preparation of Biocomposites Based on Poly(lactic acid) and Durian Peel Cellulose

Table 5

Analysis of variance for the quadratic model of impact strength.

Source	Sum of squares	DF	Mean squares	value	Prob
Model	1.84	9	0.20	10.13	0.0006 significant
Residual	0.20	10	0.020
Lack-of-fit	0.18	5	0.037	9.49	0.0137 significant
Pure error	0.019	5
Total	2.04	19

Std. dev. = 0.14, mean = 2.27, -square = 0.9012, adeq. precision = 9.415.