Next Article in Journal
Novel Biobased Polyamide 410/Polyamide 6/CNT Nanocomposites
Next Article in Special Issue
Highly Selective Enzymatic Recovery of Building Blocks from Wool-Cotton-Polyester Textile Waste Blends
Previous Article in Journal
Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
Previous Article in Special Issue
Microbial Conversion of Vegetable Oil to Hydroxy Fatty Acid and Its Application to Bio-Based Polyurethane Synthesis
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Polymers 2018, 10(9), 985;

Reinforcement of Thermoplastic Corn Starch with Crosslinked Starch/Chitosan Microparticles

LEPABE, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
IFIMUP and IN—Institute of Nanoscience and Nanotechnology, Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal
DEMad—Instituto Politécnico de Viseu, Campus Politécnico de Repeses 3504-510 Viseu, Portugal
Author to whom correspondence should be addressed.
Received: 25 July 2018 / Revised: 30 August 2018 / Accepted: 31 August 2018 / Published: 4 September 2018
(This article belongs to the Special Issue Recent Advances in Bioplastics)
Full-Text   |   PDF [2018 KB, uploaded 4 September 2018]   |  


Microparticles of corn starch and chitosan crosslinked with glutaraldehyde, produced by the solvent exchange technique, are studied as reinforcement fillers for thermoplastic corn starch plasticized with glycerol. The presence of 10% w/w chitosan in the microparticles is shown to be essential to guaranteeing effective crosslinking, as demonstrated by water solubility assays. Crosslinked chitosan forms an interpenetrating polymer network with starch chains, producing microparticles with a very low solubility. The thermal stability of the microparticles is in agreement with their polysaccharide composition. An XRD analysis showed that they have crystalline fraction of 32% with Va-type structure, and have no tendency to undergo retrogradation. The tensile strength, Young’s modulus, and toughness of thermoplastic starch increased by the incorporation of the crosslinked starch/chitosan microparticles by melt-mixing. Toughness increased 360% in relation to unfilled thermoplastic starch. View Full-Text
Keywords: thermoplastic starch; corn starch; chitosan; crosslinked microparticles thermoplastic starch; corn starch; chitosan; crosslinked microparticles

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).

Share & Cite This Article

MDPI and ACS Style

Paiva, D.; Pereira, A.M.; Pires, A.L.; Martins, J.; Carvalho, L.H.; Magalhães, F.D. Reinforcement of Thermoplastic Corn Starch with Crosslinked Starch/Chitosan Microparticles. Polymers 2018, 10, 985.

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



[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top