Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Figure 4

SEM image of (a) 0 hr, (b) 1 hr, (c) 6 hr, (d) 12 hr, and (e) 24 hr of 1% NaOH treated GCW.

(a)

(b)

(c)

(d)

(e)