Adsorption of poly(isobutenylsuccinimide) dispersants at a solid-hydrocarbon interface

Chevalier, Yves; Dubois-Clochard, Marie-Claude; Durand, Jean-Pierre; Delfort, Bruno; Gateau, P.; Barré, Loı̈c; Frot, D.; Briolant, Y.; Blanchard, Isabelle; Gallo, R.

doi:10.1007/3-540-45725-9_25

Cited by 16 publications

(8 citation statements)

References 15 publications

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“…The low affinity manifested by a low slope of the adsorption isotherm which characterized the balance of the free energy of adsorption of the PBMA blocks on the PBMA latex and the entropic term of the conformational free energy of the PMANa blocks that stretched radially. Such a behavior has already been observed with block copolymers for various surfaces and solvents [24][25][26][27]. Depending on the copolymer structure, the adsorption strength and adsorbed amount at the plateau were quite different.…”

Section: Adsorption Isotherms On Latex Surfacementioning

confidence: 75%

Adsorption of block copolymers at latex surface and their utilization in emulsion polymerization

́al

Chevalier

2005

Polymer

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Section: Adsorption Isotherms On Latex Surfacementioning

confidence: 75%

Adsorption of block copolymers at latex surface and their utilization in emulsion polymerization

́al

Chevalier

2005

Polymer

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“…The thickness of the adsorbed layer was 31.0 Å, against 20 Å for the diameter of an unperturbed isotropic coil in solution. The steric stabilization by adsorbed polymers was evaluated by means of kinetic measurements of aggregation using time‐resolved light scattering or by means of flocculation tests 21, 22. The colloidal stability correlates quite well with the adsorption in all such experiments.…”

Section: Fuel Detergentsmentioning

confidence: 99%

Review: The adsorption of functional polymers from their organic solutions: applications to fuel additives

Chevalier

Fixari

Brunel

et al. 2004

Polymer International

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Functional polymers are used as additives in the formulation of fuels either for their detergency properties or for retaining cold weather operability. Examples of recent research work aimed at a better understanding of the physico‐chemical phenomena involved and at the design and synthesis of new polymers are described. One phenomenon common in most applications is the adsorption of the polymers on various surfaces (gums, soot, metal walls, paraffin crystals). In the case of chain‐end functional polymers, strong affinity of the functional groups for the surface sites is required in order to reach the high adsorption densities that allow optimum stabilization properties. This can be achieved by a correct choice of the functional group (of its polymeric nature, having a primary amino group that will strongly interact with surface sites) or by the design of the macromolecular architecture. In the case of very complex systems (eg the crystallization of paraffins in diesel fuel), the selection of relevant experimental models allows investigations into mechanisms at a microscopic level. Such studies would obviously not be possible on the diesel fuel itself, which is nevertheless the only really representative sample. Copyright © 2004 Society of Chemical Industry

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“…They concluded that the average molecular weight of PIB must be above 900–1000 to exhibit good performance and tetraethylenepentamine (TEPA) was a more powerful polar head part than diethylenetriamine (DETA). Later, researchers reached a general agreement on the PIBSI dispersant, that is, with more imino groups on the linear polyamine (head part), its adsorption toward the deposit gets stronger . Apart from polyamine, Ahmed et al also used poly(ethylene glycol) (PEG) as the polar head part and found that the dispersion efficiency of the prepared additives increased by increasing the chain length of PEG.…”

Section: Introductionmentioning

confidence: 97%

Synthesis and Performance of a Series of Polyisobutylene-Substituted Succinic Acid Ester Dispersants for Reducing Thermal Oxidation Deposition of Jet Fuel

et al. 2020

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The thermal oxidation deposition of jet fuel is of great concern for the advanced fuel-cooled thermal management technologies of advanced aircraft and could be solved by many methods in which pre-adding dispersants is the most economical and efficient way. In this paper, a series of new ester-type dispersants were synthesized from polyisobutylene-substituted succinic acid (PIBSA) and polyglycerol. The polyisobutylene-substituted succinic acid ester (PIBSAE) dispersants were characterized by Fourier transform infrared (FT-IR) and gel permeation chromatography (GPC), and their anti-deposition performances in Chinese jet fuel (RP-3) were determined by an electrically heated tube test and Jet Fuel Thermal Oxidation Stability test (JFTOT). The structure and performance of the dispersant were greatly influenced by the molar ratio of PIBSA to polyglycerol and the degree of polymerization of polyglycerol in the reactant. The dispersant synthesized from PIBSA with triglycerol at a 1:1 molar ratio, which not only has a moderate total hydroxyl value but also contains sufficient poly-PIBSAE molecules with moderate molecular weight, showed the best performance in the electrically heated tube test by reducing 84.6% of the thermal oxidation deposit of a commercial RP-3. Furthermore, JFTOT at 355 °C also showed that this dispersant can greatly reduce the deposit of low-quality jet fuel by decreasing the deposit rating from >4 to 1 and the maximum differential pressure from 2.10 to 0.20 kPa.

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Adsorption of poly(isobutenylsuccinimide) dispersants at a solid-hydrocarbon interface

Cited by 16 publications

References 15 publications

Adsorption of block copolymers at latex surface and their utilization in emulsion polymerization

Adsorption of block copolymers at latex surface and their utilization in emulsion polymerization

Review: The adsorption of functional polymers from their organic solutions: applications to fuel additives

Synthesis and Performance of a Series of Polyisobutylene-Substituted Succinic Acid Ester Dispersants for Reducing Thermal Oxidation Deposition of Jet Fuel

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