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

Table 3

The responses of the parameters used in central composite design.

Trial	Independent variables			Responses
	Cellulose loading (%)	Temperature (°C)	Time (min)	Tensile strength (MPa)	Impact strength (kJ/m^2)
1	25	165	15	40.735 ± 1.184	2.519 ± 0.510
2	25	165	25	33.318 ± 0.817	2.010 ± 0.122
3	25	175	15	39.762 ± 1.092	2.290 ± 0.310
4	25	175	25	28.707 ± 1.231	2.025 ± 0.248
5	35	165	15	48.010 ± 1.208	2.876 ± 0.356
6	35	165	25	47.556 ± 1.669	2.851 ± 0.227
7	35	175	15	40.174 ± 0.663	2.445 ± 0.131
8	35	175	25	36.800 ± 1.380	2.019 ± 0.538
9	21.6	170	20	33.615 ± 1.461	1.922 ± 0.171
10	38.4	170	20	46.114 ± 0.956	2.944 ± 0.341
11	30	161.6	20	41.067 ± 1.901	2.464 ± 0.297
12	30	178.4	20	31.662 ± 1.146	2.241 ± 0.540
13	30	170	11.6	35.793 ± 1.076	2.493 ± 0.196
14	30	170	28.4	31.984 ± 1.048	2.250 ± 0.289
15	30	170	20	29.920 ± 2.051	2.053 ± 0.210
16	30	170	20	30.658 ± 1.483	1.952 ± 0.252
17	30	170	20	31.150 ± 1.286	1.930 ± 0.250
18	30	170	20	30.549 ± 0.845	1.993 ± 0.165
19	30	170	20	29.666 ± 1.615	2.028 ± 0.153
20	30	170	20	31.192 ± 1.501	2.094 ± 0.203