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Volume 16
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10.3390/polym16142024
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Article

Enhancing Sustainability in PLA Membrane Preparation through the Use of Biobased Solvents

by
Giovanna Gomez d’Ayala
1,
Tiziana Marino
1,*,
Yêda Medeiros Bastos de Almeida
2,
Anna Raffaela de Matos Costa
3,
Larissa Bezerra da Silva
4,
Pietro Argurio
5 and
Paola Laurienzo
1
1
Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Via Campi Flegrei, 34, 80078 Pozzuoli, NA, Italy
2
Department of Chemical Engineering, Federal University of Pernambuco, Recife 50740-520, PE, Brazil
3
CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
4
Postgraduate Program in Materials Science and Engineering, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil
5
Department of Environmental Engineering, DIAm, University of Calabria, Via Pietro Bucci CUBO 44/A, 87036 Rende, CS, Italy
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(14), 2024; https://doi.org/10.3390/polym16142024
Submission received: 11 June 2024 / Revised: 3 July 2024 / Accepted: 12 July 2024 / Published: 16 July 2024
(This article belongs to the Special Issue Biopolymers for Food Packaging and Agricultural Applications)
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Abstract

For the first time, ultrafiltration (UF) green membranes were prepared through a sustainable route by using PLA as a biopolymer and dihydrolevoclucosenone, whose trade name is Cyrene™ (Cyr), dimethyl isosorbide (DMI), and ethyl lactate (EL) as biobased solvents. The influence of physical-chemical properties of the solvent on the final membrane morphology and performance was evaluated. The variation of polymer concentration in the casting solution, as well as the presence of Pluronic® (Plu) as a pore former agent, were assessed as well. The obtained results highlighted that the final morphology of a membrane was strictly connected with the interplaying of thermodynamic factors as well as kinetic ones, primarily dope solution viscosity. The pore size of the resulting PLA membranes ranged from 0.02 to 0.09 μm. Membrane thickness and porosity varied in the range of 0.090–0.133 mm of 75–87%, respectively, and DMI led to the most porous membranes. The addition of Plu to the casting solution showed a beneficial effect on the membrane contact angle, allowing the formation of hydrophilic membranes (contact angle < 90°), and promoted the increase of pore size as well as the reduction of membrane crystallinity. PLA membranes were tested for pure water permeability (10–390 L/m2 h bar).
Keywords: polylactic acid; biopolymer; biobased solvents; NIPS; green membranes polylactic acid; biopolymer; biobased solvents; NIPS; green membranes
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MDPI and ACS Style

Gomez d’Ayala, G.; Marino, T.; de Almeida, Y.M.B.; Costa, A.R.d.M.; Bezerra da Silva, L.; Argurio, P.; Laurienzo, P. Enhancing Sustainability in PLA Membrane Preparation through the Use of Biobased Solvents. Polymers 2024, 16, 2024. https://doi.org/10.3390/polym16142024

AMA Style

Gomez d’Ayala G, Marino T, de Almeida YMB, Costa ARdM, Bezerra da Silva L, Argurio P, Laurienzo P. Enhancing Sustainability in PLA Membrane Preparation through the Use of Biobased Solvents. Polymers. 2024; 16(14):2024. https://doi.org/10.3390/polym16142024

Chicago/Turabian Style

Gomez d’Ayala, Giovanna, Tiziana Marino, Yêda Medeiros Bastos de Almeida, Anna Raffaela de Matos Costa, Larissa Bezerra da Silva, Pietro Argurio, and Paola Laurienzo. 2024. "Enhancing Sustainability in PLA Membrane Preparation through the Use of Biobased Solvents" Polymers 16, no. 14: 2024. https://doi.org/10.3390/polym16142024

APA Style

Gomez d’Ayala, G., Marino, T., de Almeida, Y. M. B., Costa, A. R. d. M., Bezerra da Silva, L., Argurio, P., & Laurienzo, P. (2024). Enhancing Sustainability in PLA Membrane Preparation through the Use of Biobased Solvents. Polymers, 16(14), 2024. https://doi.org/10.3390/polym16142024

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