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Luzi, F., Dominici, F., Armentano, I., Fortunati, E., Burgos, N., Fiori, S. and Torre, L. (2019) Combined Effect of Cellulose Nanocrystals, Carvacrol and Oligomeric Lactic Acid in PLA_PHB Polymeric Films. Carbohydrate Polymers, 223, Article ID: 115131.
https://doi.org/10.1016/j.carbpol.2019.115131

has been cited by the following article:

• TITLE: Thermal and Crystallization Behavior of PLA/PLLA-Grafting Cellulose Nanocrystal

  AUTHORS: Erika M. Inácio, Diego H. S. Souza, Marcos L. Dias

  KEYWORDS: Nanocrystals, Cellulose, Poly(Lactic Acid), Grafting, Crystallizations

  JOURNAL NAME: Materials Sciences and Applications, Vol.11 No.1, January 8, 2020

  ABSTRACT: PLLA-modified cellulose nanocrystals (CNC) were produced from commercial CNC by tin-catalyzed polymerization of lactide in presence of CNC. FTIR spectroscopy demonstrated that the result of the reaction produced the grafting of PLLA chains onto CNC surface (CNC-g-PLLA). Films of poly(lactic acid) (PLA) and PLA/CNC nanocomposites (with non-modified CNC and CNC-g-PLLA) containing 0.5% and 5% (w/w) of the nanofillers were prepared by casting in chloroform solution and the crystallization behavior and thermal properties investigated. All nano-composites had similar thermal stability when analyzed by TGA analyses under an inert nitrogen atmosphere. Addition of both types of CNC influenced crystallization, the higher crystallization rate being observed for 5% (w/w) CNC. Nanocomposites with 5% (w/w) CNC-g-PLLA had the strain resistance of PLA improved in the rubbery state. PLLA-modification of CNC surface increased the crystallization of PLA in PLA/CNC nanocomposites and improved the rigidity at temperatures above the glass transition, properties which are desirable for hot drinking application.