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287857

Preparation, Characterization, and Rheological Behavior of O/W and W/O Non-Newtonian Emulsions using surface-modified Nano-Silica and Non-Ionic surfactant

Article

Last updated: 01 Jan 2025

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Abstract

This paper used rice husk residues to extract silica and turn it into a liquid sodium silicate product by sodium hydroxide. The silica structure was formed by utilizing a Pluronic 123 surfactant in acidic media to produce silica with a controlled and medium porosity. The silica surface was grafted with (3-aminopropyl)triethoxysilane compound and then reacted with 1,3-propane sultone to produce silica capped with sulfonate groups. HSO3CF3 was used to exchange the prepared material's counter ion for producing a highly acidic catalyst. The resulting catalyst was identified by various techniques, including HRTEM, XRD, BET, and FTIR. The results proved that the mesoporous materials had a surface area close to 769 m2/g, and after making the modifications, the surface area reached 185 m2/g. The catalyst was exploited in the preparation of 1-(2-hydroxyethoxy)-nonadecan-2-one compound, where it was obtained with a percentage close to 99.8% at a temperature of 140 °C and a catalytic amount of 8%. The resulting compound, 1-(2-hydroxyethoxy)-nonadecan-2-one, was mixed with sodium dodecyl sulfate to prepare oil in water emulsions. The results proved that the emulsion is stable for a period of up to 18 hours, and it depends on the percentage of oil in the emulsion. Oil's viscosity in water emulsion has greatly improved compared to water in oil emulsion stabilized with amide product attached to mesoporous silica. Several rheological models have been assigned to the description of the behavior of non-Newtonian emulsion.

DOI

10.21608/ejchem.2022.105977.4877

Keywords

Functionalized mesoporous silica, Non-Newtonian, rheological modes, Emulsions

Authors

First Name

Nabel

Last Name

Negm

MiddleName

A.

Affiliation

Egyptian Petroleum Research Institute

Email

nabelnegm@hotmail.com

City

Cairo

Orcid

0000-0002-7999-0179

First Name

Mohamed

Last Name

Betiha

MiddleName

-

Affiliation

Egyptian Petroleum Research Institute

Email

mohamed_betiha@hotmail.com

City

Cairo

Orcid

-

First Name

Nermin

Last Name

Saleh

MiddleName

-

Affiliation

Egyptian Petroleum Research Institute

Email

nerminabdelmonem@gmail.com

City

Cairo

Orcid

-

Volume

66

Article Issue

11

Related Issue

43443

Issue Date

2023-11-01

Receive Date

2021-11-14

Publish Date

2023-11-01

Page Start

15

Page End

24

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_287857.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=287857

Order

287,857

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle

Preparation, Characterization, and Rheological Behavior of O/W and W/O Non-Newtonian Emulsions using surface-modified Nano-Silica and Non-Ionic surfactant

Details

Type

Article

Created At

30 Dec 2024