Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Author(s)

Zanini, Noelle C. ; Ferreira, Rafaela R. ; Barbosa, Rennan F. S. ; de Souza, Alana G. ; Camani, Paulo H. ; Oliveira, Sueli A. ; Mulinari, Daniella R. ; Rosa, Derval S.

• Document type: Journal article
• Source: Journal of Applied Polymer Science; v. N/A, p. 23-pg., 2023-08-31.

Abstract

The method employed for membrane preparation and nanoparticle incorporation in membrane systems can affect their properties. This work aims to compare the better strategy to obtain membranes from the preparation of PBAT [Poly(butylene adipate co-terephthalate)] containing nanoclay Cloisite((R)) 20A (C20A) (0, 0.5, and 1 wt.%) by combined Evaporation/Non-solvent Induced Phase Separation (EIPS/NIPS) or dip coating methods. The SEM, TGA, contact angle measurements, FTIR, XRD, mechanical testing, and cost analysis characterized EIPS/NIPS to dip coating membranes. EIPS/NIPS membranes had smaller pores (0.3-0.5 mu m), with a more homogeneous pore diameter distribution due to C20A nanoclay insertion. PBAT/0.5% C20A(EIPS/NIPS) was the more hydrophilic membrane (37 degrees) with better mechanical properties proven by statistical analysis. The cost analysis showed that EIPS/NIPS membranes production cost per square meter (m(2)) was lower (US$ 73.4-73.8) than dip coating (US$ 89.0-99.2). The EIPS/NIPS method was the most economically and statistically advantageous, and its properties can favor future applications for PTEs removal in aqueous media. (AU)

• FAPESP's process: 21/08296-2 - Development of chitosan hydrogels containing modified cellulose nanostructures for metal removal and recovery from contaminated water
• Grantee: Rennan Felix da Silva Barbosa
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 21/14714-1 - Multi-user equipment approved in grant 2020/13703-3: Cromatógrafo de Íons Modular 940 Professional IC Vario
• Grantee: Derval dos Santos Rosa
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 22/01382-3 - Cellulose hydrogels containing modified clays for the removal and recovery of metal ions present in contaminated water
• Grantee: Rafaela Reis Ferreira
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 19/16301-6 - Starch aerogels containing modified nanocellullose for removal of heavy metals in wastewater from the industry sector
• Grantee: Paulo Henrique Camani
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 20/13703-3 - Environmentally friendly porous materials for the recovery and revaluation of metals reclaimed from contaminated water
• Grantee: Derval dos Santos Rosa
• Support Opportunities: Research Projects - Thematic Grants