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Preparation of PLA/MMT/CNW-CS hybrid nanocomposites film

The PLA/MMT/CNW-CS hybrid nanocomposites were prepared by mixing 10 g of PLA pellets with 5 phr of MMT and different contents of CNW-CS (1, 3, 5, 7, and 9 phr), as described in our previous publication (Arjmandi et al., 2015b). The CNW-CS filler was in water suspension form. Solvent exchange was then carried out via centrifugation using a Universal 32 Hettich centrifuge (Newport Pagnell, England). Water was then exchanged with acetone and acetone exchanged with chloroform. The CNW-CS filler was then sonicated using an ultrasonic bath (Branson 2510) for 5 min to ensure a homogenous dispersion inside the chloroform. After that, the dispersed CNW-CS was transferred into a reaction flask containing PLA pellets and 5 phr of MMT. Subsequently, the various PLA/MMT/CNW-CS mixtures were placed in 64 mL of chloroform and stirred with vigorous agitation for 2 h at 60°C until the PLA pellets were dissolved. The dissolved PLA containing MMT/CNW-CS was then sonicated for another 5 min. Finally, the solution was immediately cast onto a clean glass plate to obtain nanocomposite films that were approximately 100 qm thick. The hybrid nanocomposites were designated as P/MT5/CW-CS1, P/MT5/CW-CS3, P/MT5/CW-CS5, P/MT5/CW-CS7, and P/MT5/ CW-CS9 (Table 7.1).

Preparation of PLA/MMT/CNW-AH hybrid nanocomposites film

The PLA/MMT/CNW-AH hybrid nanocomposites were prepared by mixing 10 g of PLA pellets with 5 phr of MMT and different content of CNW-AH (1,3, 5, 7, and 9 phr), as reported by Arjmandi et al. (2016). The preparation method of PLA/MMT/ CNW-AH hybrid nanocomposites is the same as PLA/MMT/CNW-CS hybrid nanocomposites, as described above. The hybrid nanocomposites were designated as P/ MT5/CW-AH1, P/MT5/CW-AH3, P/MT5/CW-AH5, P/MT5/CW-AH7, and P/MT5/ CW-AH9 (Table 7.1).

 
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