Unraveling of Poly(lactic acid) (PLA)/Natural Wax/Titanium Dioxide Nanoparticle Composites for Disposable Plastic Applications.

IF 4.7 3区工程技术 Q1 POLYMER SCIENCE

Polymers Pub Date : 2025-03-04 DOI:10.3390/polym17050685

Jacqueline Guadalupe Bocarando-Chacón, Iván Alziri Estrada-Moreno, Imelda Olivas-Armendáriz, Alejandro Vega-Rios, Mónica Elvira Mendoza-Duarte

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引用次数: 0

Abstract

The present research is a comprehensive study that developed poly(lactic acid) PLA/natural wax (Wx)/non-functionalized titanium dioxide nanoparticles (TiO₂-NF) and PLA/Wx/titanium dioxide nanoparticles functionalized with triethoxysilane (TiO₂-F) composites by melt blending. This research systematically investigated their hydrolytic degradation, antibacterial properties, oxygen permeability, and optical transparency. The TiO₂-NF or TiO₂-F (0.1, 0.5, or 1 wt%) were added to a PLA/Wx (85:15) blend using a Brabender internal mixer at 180 °C. Hydrolytic degradation was carried out in distilled water at 50 °C and an initial pH of 6.2 for 9 months. Changes in weight, morphology, and the rheological behavior of the blends were evaluated at different times during the hydrolytic degradation of the PLA/Wx/TiO₂-NF and PLA/Wx/TiO₂-F composites. The antibacterial properties of PLA/Wx, PLA/Wx/TiO₂-0.1-NF, and PLA/Wx/TiO₂-0.1-F were assessed by testing them against both E. coli (Gram-negative) and S. aureus (Gram-positive) bacteria. Their oxygen permeability and optical transparency are comparable to those of LDPE films. These composites, produced by melt blending, show potential for application as disposable plastics, which could significantly impact the fields of materials science and polymer engineering.

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来源期刊

Polymers POLYMER SCIENCE-

CiteScore

8.00

自引率

16.00%

发文量

4697

审稿时长

1.3 months

期刊介绍： Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.