| Full text | |
| Author(s): |
Ferreira, Conny Cerai
[1]
;
Gomes Da Silva, Thais Barros
[2]
;
dos Santos Francisco, Agatha Densy
[2]
;
Bandeira, Lucas
[3]
;
Cunha, Renato D.
[3]
;
Coutinho-Neto, Mauricio Domingues
[3]
;
Homem-de-Mello, Paula
[3]
;
De Almeida, James Moraes
[3]
;
Orestes, Ednilsom
[1]
;
Veiga Nascimento, Regina Sandra
[2]
Total Authors: 10
|
| Affiliation: | [1] Univ Fed Fluminense, Escola Engn Ind Met Volta Redonda, Vila Santa Cecilia, Volta Redonda - Brazil
[2] Univ Fed Rio de Janeiro, Inst Quim, Rio De Janeiro - Brazil
[3] Univ Fed ABC, Ctr Ciencias Nat & Humana, Santo Andre, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Journal of Applied Polymer Science; v. 139, n. 9 OCT 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
In this work, the efficiency of partially hydrophobized hyperbranched polyglycerols (HPG11 and HPG12) as cetyltrimethylammonium bromide (CTAB) carriers was evaluated to prevent surfactant losses by adsorption on reservoir rocks surface during enhanced oil recovery (EOR) processes. Interactions between surfactant and polymers were studied by conductivity, zeta potential, and particle size measurements showing that complexes were formed between the components. The ability of PG, HPG11, HPG12 and those complexes to reduce the interfacial tension (IFT) was verified and one of the complexes was able to reduce the IFT to values under 1.0 mN/m, suggesting the occurrence of a synergy between the components. Molecular dynamics simulations indicated the preferential sites of interaction between surfactants and HPGs. HPG11:CTAB and HPG12:CTAB complexes' ability to permeate an unconsolidated porous medium and deliver the surfactant at the water-oil interface, increasing oil production, was evaluated through transport and oil displacement tests, and the results showed that the HPG12:CTAB complex led to almost 90% of oil recovery. (AU) | |
| FAPESP's process: | 17/23416-9 - Photosensitizers: from fundamental properties to biological applications |
| Grantee: | Paula Homem-de-Mello |
| Support Opportunities: | Regular Research Grants |