Self-assembly and rheological behavior of oleic acid-based pseudo-tetrameric surfactants

Li, Chaowang; Xie, Danhua; Pei, Xiaomei; Song, Binglei; Cui, Zhenggang

doi:10.1007/s00396-018-4451-3

Cited by 9 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in most cases, these covalently bonded Gemini surfactants require complicated synthesis. In recent years, there have been studies on the preparation of Gemini-like surfactants [5] formed by non-covalent electrostatic attraction [6]. This method can avoid the disadvantages of traditional covalent oligomeric surfactants [7].…”

Section: Introductionmentioning

confidence: 99%

Temperature and pH responsive behavior of wormlike micelles formed by a long chain Gemini-like surfactant

Pei

Pan

Han³

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

A Gemini-like surfactant is formed by connecting short chain dibasic acid and long chain tertiary amine in the molar ratio of 1:2 through the non-covalent action of electrostatic attraction, and does not need complicated synthesis. Due to the tertiary amine group in the Gemini-like surfactant, it exhibits pH-responsive properties. However, in the research, we were pleasantly surprised to find that the Gemini-like surfactants also showed temperature response characteristics. With the increase of temperature, the viscosity of the system increases rapidly, and it is resistant to high temperatures. At 60°C, the zero-shear viscosity of the system at the concertation of 300 mM can reach an extremely high value of 11967.73 Pa·s, which was higher than most of wormlike micelles formed by the conventional covalently linked oligomeric counterparts. The reason for this phenomenon may be that as the temperature increases, the hydrogen bonds in the system are destroyed, resulting in the reduction of the repulsive force between molecules and the shortening of the intermolecular distance, which makes the micelles more entangled closely.

show abstract

Section: Introductionmentioning

confidence: 99%

Temperature and pH responsive behavior of wormlike micelles formed by a long chain Gemini-like surfactant

Pei

Pan

Han³

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The oligomeric surfactants represent a special class of novel surfactants comprising two or more traditional surfactant molecules connected by chemical bonds at or near the head group through a spacer group. Based on the number of connected amphiphilic units [ 10 ], the oligomeric surfactants can be classified as dimeric (Gemini) [ 11 , 12 ], trimeric [ 13 ], tetrameric [ 14 ], multimeric [ 15 ], etc. The association of the surfactant molecules via chemical bonds instead of via simple physical means not only ensures the close contact among the active ingredients of the oligomeric surfactants, but also guarantees that the hydrophilic characteristics of the head groups are not destroyed, thus enabling the oligomeric surfactants to exhibit the unique properties.…”

Section: Introductionmentioning

confidence: 99%

Soybean-Oil-Based CO2-Switchable Surfactants with Multiple Heads

Huang

Quan

et al. 2021

Molecules

View full text Add to dashboard Cite

Oligomeric surfactants display the novel properties of low surface activity, low critical micellar concentration and enhanced viscosity, but no CO2 switchable oligomeric surfactants have been developed so far. The introduction of CO2 can convert tertiary amine reversibly to quaternary ammonium salt, which causes switchable surface activity. In this study, epoxidized soybean oil was selected as a raw material to synthesize a CO2-responsive oligomeric surfactant. After addition and removal of CO2, the conductivity analyzing proves that the oligomeric surfactant had a good response to CO2 stimulation. The viscosity of the oligomeric surfactant solution increased obviously after sparging CO2, but returned to its initial low viscosity in the absence of CO2. This work is expected to open a new window for the study of bio-based CO2-stimulated oligomeric surfactants.

show abstract

“…Onde o primeiro fator é relacionado à estruturação de uma rede supramolecular formada através de pontos de reticulação transiente entre os agregados mistos e as ramificações das cadeias poliméricas e favorece o aumento da viscoelasticidade, enquanto o segundo fator tende para redução da viscosidade do sistema [39]. Em adição a esta colocação, a literatura também apresenta artigos [92], [106], [111], [112] O aumento do módulo de elasticidade está associado ao aumento do emaranhamento e do comprimento do contorno das micelas gigantes que compõem o fluido [171].…”

Section: 4) Reologia No Regime Linearunclassified

Desenvolvimento de um fluido ácido divergente baseado no estudo das interações entre micelas gigantes responsivas ao pH e diferentes polímeros

da Silva Barbosa

View full text Add to dashboard Cite

Gostaria de agradecer aos meus pais, Simone Pinto da Silva e Josias Barbosa, que me deram apoio e me incentivaram ao longo de minha vida, possibilitando a minha formação. Gostaria também de agradecer minha namorada, Cora Conte, pelo suporte emocional e por estar sempre comigo. Amo muito vocês. Agradeço aos amigos que estiveram presentes, me fizeram companhia e me ajudaram dentro e fora do laboratório. Em especial Manazael Jora e Renato Nunes de Souza, que fizeram parte do projeto que resultou nesta pesquisa, sendo fundamentais para sua concretização. Muitos dos resultados apresentados nesta dissertação foram obtidos com auxílio deles. Vocês são pessoas incríveis, com quem aprendi muito. Agradeço ao Prof. Dr. Edvaldo Sabadini, pela oportunidade de desenvolver este projeto de mestrado, além da orientação e ensinamentos dados desde minha iniciação cientifica. Agradeço os interlocutores técnicos do projeto Carlos Speglich e Sergio Taveira de Camargo Junior, pela orientação a respeito da estimulação ácida, pela ajuda e envolvimento com projeto e pela disponibilidade dos resultados de simulação de fluxo, realizados pela equipe do Cenpes-Petrobras. E finalmente gostaria de agradecer à Unicamp e ao Instituto de Química pela infraestrutura e a Petrobras por viabilizar esta pesquisa. O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Código de Financiamento 001.

show abstract

Self-assembly and rheological behavior of oleic acid-based pseudo-tetrameric surfactants

Cited by 9 publications

References 31 publications

Temperature and pH responsive behavior of wormlike micelles formed by a long chain Gemini-like surfactant

Temperature and pH responsive behavior of wormlike micelles formed by a long chain Gemini-like surfactant

Soybean-Oil-Based CO2-Switchable Surfactants with Multiple Heads

Desenvolvimento de um fluido ácido divergente baseado no estudo das interações entre micelas gigantes responsivas ao pH e diferentes polímeros

Contact Info

Product

Resources

About