Next Article in Journal
Comment on: Endogenous Ouabain and Related Genes in the Translation from Hypertension to Renal Diseases, Int. J. Mol. Sci. 2018, 19, 1948
Next Article in Special Issue
Thermal, Mechanical, and Rheological Properties of Biocomposites Made of Poly(lactic acid) and Potato Pulp Powder
Previous Article in Journal
Sensory Neuropeptides and their Receptors Participate in Mechano-Regulation of Murine Macrophages
Previous Article in Special Issue
Processability and Degradability of PHA-Based Composites in Terrestrial Environments
Article Menu
Issue 3 (February-1) cover image

Export Article

Open AccessArticle
Int. J. Mol. Sci. 2019, 20(3), 504; https://doi.org/10.3390/ijms20030504

Chitin Nanofibrils in Poly(Lactic Acid) (PLA) Nanocomposites: Dispersion and Thermo-Mechanical Properties

1
Department of Civil and Industrial Engineering, University of Pisa, Via Diotisalvi 2, 56122 Pisa, Italy
2
National InterUniversity Consortium of Materials Science and Technology (INSTM), Via Giusti 9, 50121 Florence, Italy
3
Skin Pharmacology and Dermatology Unit, Campania University “Luigi Vanvitelli”, 80100 Naples, Italy
4
MAVI SUD, Aprilia (LT), 04011 Aprilia, Italy
*
Authors to whom correspondence should be addressed.
Received: 14 December 2018 / Revised: 17 January 2019 / Accepted: 18 January 2019 / Published: 24 January 2019
(This article belongs to the Special Issue Synthesis and Applications of Biopolymer Composites)
  |  
PDF [9503 KB, uploaded 1 February 2019]
  |  

Abstract

Chitin-nanofibrils are obtained in water suspension at low concentration, as nanoparticles normally are, to avoid their aggregation. The addition of the fibrils in molten PLA during extrusion is thus difficult and disadvantageous. In the present paper, the use of poly(ethylene glycol) (PEG) is proposed to prepare a solid pre-composite by water evaporation. The pre-composite is then added to PLA in the extruder to obtain transparent nanocomposites. The amount of PEG and chitin nanofibrils was varied in the nanocomposites to compare the reinforcement due to nanofibrils and plasticization due to the presence of PEG, as well as for extrapolating, where possible, the properties of reinforcement due to chitin nanofibrils exclusively. Thermal and morphological properties of nanocomposites were also investigated. This study concluded that chitin nanofibrils, added as reinforcing filler up to 12% by weight, do not alter the properties of the PLA based material; hence, this additive can be used in bioplastic items mainly exploiting its intrinsic anti-microbial and skin regenerating properties. View Full-Text
Keywords: chitin nanofibrils; poly(lactic acid); nanocomposites chitin nanofibrils; poly(lactic acid); nanocomposites
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Coltelli, M.-B.; Cinelli, P.; Gigante, V.; Aliotta, L.; Morganti, P.; Panariello, L.; Lazzeri, A. Chitin Nanofibrils in Poly(Lactic Acid) (PLA) Nanocomposites: Dispersion and Thermo-Mechanical Properties. Int. J. Mol. Sci. 2019, 20, 504.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top