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Table 3 Effects of PET content on composite properties

From: Flat-pressed wood plastic composites from sawdust and recycled polyethylene terephthalate (PET): physical and mechanical properties

Items Regression equation Regression coefficient (R2)
Density (Kg/m 3 ) y = 6.321x +662.1 0.82
MC (%) y = −0.40x + 3.367 0.865
WA (%) at 25°C y = −0.518x + 43.67 0.926
WA (%) at 50°C y = −0.488x +49.81 0.824
WA (%) at 75°C y = −0.547x + 56.53 0.693
TS (%) at 25°C y = −0.129x + 13.81 0.821
TS (%) at 50°C y = −0.141x + 15.24 0.854
TS (%) at 75°C y = −0.161x + 16.98 0.908
MOE (N/mm 2 ) y = 18.86x + 917.4 0.863
MOR (N/mm 2 ) y = 0.545x - 5.469 0.751
  1. Significance level α = 0.05; y = Properties of SD-PET composites, x = PET content.