Title:	Effect of coconut oil on the properties of thermoplastic starch/montmorillonite nanoclay bionanocomposite.
Authors:	MILFONT, C. H. R. REINALDO, J. da S. MATTOS, A. L. A. SOUZA FILHO, M. de S. M. de ITO, E. N.
Affiliation:	CARLOS HENRIQUE RODRIGUES MILFONT, UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE; JUCIKLÉCIA DA SILVA REINALDO, UNIVERSIDADE DO ESTADO DO AMAZONAS; ADRIANO LINCOLN ALBUQUERQUE MATTOS, CNPAT; MEN DE SA MOREIRA DE SOUZA FILHO, CNPAT; EDSON NORIYUKI ITO, UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE.
Date Issued:	2025
Citation:	Materials Research, v. 28, e20250527, 2025.
Description:	This study aimed to develop cassava thermoplastic starch (TPS) biopolymers and polymer bionanocomposites with varying concentrations of montmorillonite (MMT) nanoclay and coconut oil (CO) by extrusion. X-ray diffraction indicated intercalated and partially exfoliated structure of nanoclay lamellae in the TPS, forming a polymer bionanocomposite. Colorimetric analyses showed that the color of the materials changed with variations in MMT and CO concentrations. The water absorption test revealed synergism between MMT and CO in reducing the hydrophilic character of the polymer bionanocomposite. Scanning electron microscopy (SEM) showed heterogeneities in the fracture surface morphologies of the biopolymer with CO droplets, absent in the TPS/MMT bionanocomposite. MMT addition destroyed CO droplets, favoring rougher and more uniform surfaces. Mechanical behavior under tensile test showed that MMT and CO improved these properties. TPS/MMT/CO bionanocomposites produced with sustainable materials showed potential for application in the production of films for packaging perishable fruits, such as strawberries, where the effect of reducing senescence and increasing the shelf life of the fruit was observed.
Thesagro:	Extrusão
NAL Thesaurus:	Coconut oil Extrusion
Keywords:	Bionanocompósitos poliméricos Amido termoplástico Óleo de coco Argila montmorilonita Polymer bionanocomposite Thermoplastic extrusion Thermoplastic starch Montmorillonite clay
ISSN:	1980-5373
DOI:	https://doi.org/10.1590/1980-5373-MR-2025-0527
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPAT)