Effect of Different Morphology of Nucleating Agents on the Crystallization Behavior of Poly Lactic Acid/Nanocellulose Composites
Vol. 58, No. 6, pp. 322-327,
Dec. 2021
10.12772/TSE.2021.58.322
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Abstract
In this study, two types of nanocellulose were introduced in poly lactic acid (PLA)
as nucleation agents, and the crystallization behavior of the composite was studied. Owing
to the different aspect ratio, the effect of cellulose nanocrystal (CNC) and cellulose nanofiber
(CNF) on the PLA behavior was significantly different. Rheological analysis revealed that
CNC did not affect the chain behavior whereas CNF interfered the chain movement of the
PLA. Both CNC and CNF played role as nucleation agents, but the crystallization behaviors
of the composites were different. DSC analysis confirmed that CNC helped to develop α
crystalline of PLA. On the other hand, CNF disturbed the compact crystalline formation and
resulted in δ crystalline structure development.
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