Fig. 1From: Prediction of cellulose nanofibril (CNF) amount of CNF/polypropylene composite using near infrared spectroscopyThe raw near infrared (NIR) spectra of each calibration set of CNF/polypropylene (PP) composites: a Injection-A, b Injection-B, c Film-A. The details of sample conditions are shown in Table 1Back to article page