On the quantitative adsorption behavior of multi-zwitterionic end-functionalized polymers onto gold surfaces

Park, Mi Kyoung; Sakellariou, Giorgos; Pispas, Stergios; Hadjichristidis, Nikos; Advincula, Rigoberto C.

doi:10.1016/j.colsurfa.2008.05.034

Cited by 3 publications

(7 citation statements)

References 28 publications

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“…The zwitterionic segments of Polymer 5 provide the adhesion through ionic interactions to the calcite surface. 29 The slow kinetics to reach equilibrium of Polymer 5 may be the result of reversible ionic interfacial interactions. This behavior is similar to that observed for other reported zwitterionic polymers, wherein it is assumed that diffusion is not the rate-limiting step for the polymer adsorption onto a charged surface in brine.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Dynamic Adsorption of Functionalized Zwitterionic Copolymers on Carbonate Surfaces under Extreme Reservoir Conditions

Kawelah

Alamri

et al. 2020

Energy Fuels

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The injection of aqueous polymer solutions into reservoirs for enhanced oil recovery has attracted considerable interest in the petroleum industry. Polymers increase the viscosity of the fluids and thereby improve the volumetric sweep efficiency. However, significant polymer retention in reservoirs by adsorption to surfaces limits the propagation through the reservoir and can reduce the efficiency of the polymer flooding. To explore the structure−property relationships that can direct improvements in future polymer designs, we have investigated the dynamic adsorption of a model system of five zwitterionic copolymers using a quartz crystal microbalance with dissipation and core-flooding experiments at high temperatures and salinities. The results indicate that the degree of dynamic polymer retention is sensitive to a low percentage of functional comonomers on the polymer backbone. The concept of using a small fraction of comonomers to tune the adsorption of polymers is an attractive cost-effective method for modifying the properties of the polymers employed in the oil and gas industry.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Dynamic Adsorption of Functionalized Zwitterionic Copolymers on Carbonate Surfaces under Extreme Reservoir Conditions

Kawelah

Alamri

et al. 2020

Energy Fuels

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“…Piranha hydroxylation treatment uses a solution of concentrated sulphuric acid (98%) and hydrogen peroxide (30%) at a ratio of 7 : 3, 4 : 1 or 3 : 1. 31,32,44,46,52,55,57,58,[62][63][64][65][66][67][68][69][70][71][72][73][74][75][76] Samples are typically immersed in the solution at a temperature between 60 and 90 C for duration of 30 to 60 minutes, although majority of the studies chose to immerse their samples at 90 C for 30 minutes. The piranha treatment has been found to be an effective method to create a good OH-terminated surface where very low water contact angles of less than 10 can be achieved.…”

Section: Factors Inuencing Sam Formationmentioning

confidence: 99%

“…OTS SAMs have been extensively investigated for tribological performance improvement of silicon wafers in a wide range of load and speed. 63,71,75,[162][163][164] Using a steel ball and forming OTS SAMs on silicon wafer disks, Cha et al recorded COF values in the range of 0.1 to 0.2 over a dry sliding distance of 75 m under a load of 50 mN for immersions in excess of one hour. No damage was found on the wafer discs for longer immersion compared with the wear tracks under 10 s and 1 h immersion.…”

Section: Achievements and Applications Of Samsmentioning

confidence: 99%

“…210,211 Although this method is relatively easy to carry out as it works much like a SAM, there is steric hindrance that impedes the density of the nal lm that is formed. 71,212,213 In addition to this, the adsorption techniques are reversible so that the layers may be susceptible to high shear forces. 210 In the 'graing from' techniques, also known as surface initiated polymerisations, the surface is rst modied with a self-assembling initiator layer, which is then exposed to monomeric components with catalyst and, if needed, in an appropriate solvent.…”

Section: Challenges Of Sam For Lubricationmentioning

confidence: 99%

Section: Polymer Brushesmentioning

confidence: 99%

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Challenges and developments of self-assembled monolayers and polymer brushes as a green lubrication solution for tribological applications

et al. 2015

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ab Self-assembled monolayers (SAMs), after originally being investigated due to their functions in changing surface wettability, have been significantly developed over the years. Many types of SAMs have been developed on a variety of substrates. However their formation mechanism, rate and quality are found to be influenced by many factors. A range of SAMs including single-and multi-component are included in this review with focus on the nano and macro tribological properties. More recently, surface initiated polymer brushes, i.e. macromolecular assemblies attached to a substrate, have emerged to be an alternative and promising method for surface modification. The ability to tether these macromolecules to tribological contacts is key to their resistance to shear under loaded contacts. This review also covers atom transfer radical polymerisation (ATRP) and the role of this technique in developing new lubrication solutions. Particular care has been taken to include the development of lubrication solutions for silicon nitride due to the importance of this material as an engineering ceramic. This paper reviews the stateof-the-art development of SAMs and polymer brushes especially the potential opportunities and challenges in applying them in tribological contacts as a lubrication solution.

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Grading the commercial optical biosensor literature—Class of 2008: ‘The Mighty Binders’

Rich

Myszka

2009

J of Molecular Recognition

141

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Optical biosensor technology continues to be the method of choice for label-free, real-time interaction analysis. But when it comes to improving the quality of the biosensor literature, education should be fundamental. Of the 1413 articles published in 2008, less than 30% would pass the requirements for high-school chemistry. To teach by example, we spotlight 10 papers that illustrate how to implement the technology properly. Then we grade every paper published in 2008 on a scale from A to F and outline what features make a biosensor article fabulous, middling or abysmal. To help improve the quality of published data, we focus on a few experimental, analysis and presentation mistakes that are alarmingly common. With the literature as a guide, we want to ensure that no user is left behind.

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On the quantitative adsorption behavior of multi-zwitterionic end-functionalized polymers onto gold surfaces

Cited by 3 publications

References 28 publications

Dynamic Adsorption of Functionalized Zwitterionic Copolymers on Carbonate Surfaces under Extreme Reservoir Conditions

Dynamic Adsorption of Functionalized Zwitterionic Copolymers on Carbonate Surfaces under Extreme Reservoir Conditions

Challenges and developments of self-assembled monolayers and polymer brushes as a green lubrication solution for tribological applications

Grading the commercial optical biosensor literature—Class of 2008: ‘The Mighty Binders’

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