International Journal of Polymer Science / 2017 / Article / Fig 1

Research Article

Characterization of Biobased Polyurethane Foams Employing Lignin Fractionated from Microwave Liquefied Switchgrass

Figure 1

SEM images of (a) pure polyol, (b) 5% lignin, (c) 10% lignin, and (d) 15% lignin content polyurethane foams.
(a)
(b)
(c)
(d)

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