Acid—base interfacial interactions in aqueous media

Oss, Carel J. van

doi:10.1016/0927-7757(93)80308-2

Cited by 808 publications

(523 citation statements)

References 149 publications

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“…These attractive interfacial interactions superseded the repulsive short-range G AB interactions, resulting in a strong net attractive force between microbial and abiotic substrata. This highlights the important role that hydrogen bonding of the water molecules surrounding the interacting substrata has on the process of microbial adhesion to hydrophobic and low surface free energy materials [32]. Such surfaces are reported to have a better propensity in removing water from the area between two contacting substrata, therefore leading to a stronger level of microbial adhesion [33].…”

Section: Discussionmentioning

confidence: 99%

Physicochemical analysis of initial adhesion and biofilm formation of Methanosarcina barkeri on polymer support material

Nguyen

Karunakaran

Collins

et al. 2016

Colloids and Surfaces B: Biointerfaces

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Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) licence. This licence only allows you to download this work and share it with others as long as you credit the authors, but you can't change the article in any way or use it commercially. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. *Graphical Abstract HighlightsOf the six materials tested Methanosarcina barkeri selectively adheres to polytetrafluoroethylene (PTFE), polypropylene (PP) and polyvinyl chloride (PVC) The best support materials for initial adhesion after 2 h also performed best after 72 h. xDLVO model predictions correlated with experimental adhesion results. Applicability of the xDLVO model in identifying support materials for selective attachment of M. barkeri. ! *Highlights (for review) Physicochemical analysis of initial adhesion and biofilm formation of HighlightsOf the six materials tested Methanosarcina barkeri selectively adheres to polytetrafluoroethylene (PTFE), polypropylene (PP) and polyvinyl chloride (PVC) The best support materials for initial adhesion after 2 h also performed best after 72 h. xDLVO model predictions correlated with experimental adhesion results. Applicability of the xDLVO model in identifying support materials for selective attachment of M. barkeri. AbstractThe retention of selective biofilms of Methanosarcina species within anaerobic digesters could reduce start-up times and enhance the efficiency of the process in treating high-strength domestic sewage. The objective of the study was to examine the effect of the surface characteristics of six common polymer support materials on the initial adhesion of the model methanogen, Methanosarcina barkeri, and to assess the potential of these support materials as selective biofilm carriers. Results from both the initial adhesion tests and extended DLVO (xDLVO) model correlated with each other, with PVC (12% surface coverage/mm 2 ), PTFE (6% surface coverage/mm 2 ), and PP (6% surface coverage/mm 2 ), shown to be the better performing support materials for initial adhesion, as well as subsequent biofilm formation by M. barkeri after 72 h. These three support materials Experimental results showed that the type of material strongly influenced the extent of adhesion from M. barkeri (p < 0.0001), and the xDLVO model was able to explain the results in these environmental conditions. Therefore, DLVO physicochemical forces were found to be influential on the initial adhesion of M. barkeri. Scanning electron microscopy suggested that production of extracellular polymeric substances ...

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Section: Discussionmentioning

confidence: 99%

Physicochemical analysis of initial adhesion and biofilm formation of Methanosarcina barkeri on polymer support material

Nguyen

Karunakaran

Collins

et al. 2016

Colloids and Surfaces B: Biointerfaces

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“…The surface properties of the hydrogel films were determined by measuring the contact angle values to different test liquids, and the surface free energies of the hydrogel films were calculated from contact angle data using acid-base method of van Oss. 31 System parameters such as properties of hydrogels (i.e., effect of HEMA:PEG-MA and/or HEMA:HPC ratios on the water content, surface morphology, thermal properties), the interaction with two important blood proteins (i.e., human serum albumin and fibrinogen) and platelet adhesion behavior of the hydrogels were also studied. Finally, the effects of surface properties on the MSCs expansion were also evaluated.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(hydroxyethyl methacrylate-co -poly(ethyleneglycol-methacrylate)/hydroxypropyl-chitosan) hydrogel films: Adhesion of rat mesenchymal stem cells

et al. 2011

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This study examined the effects of the surface properties of the materials, such as the hydroxyl, methyl and amino groups, on rat bone marrow derived Mesenchymal Stem Cell (MSC) seeding. A series of hydrogels were prepared in film form using 2-hydroxyethyl methacrylate (pHEMA), poly(ethyleneglycol) methacrylate (PEG-MA), and/or hydroxypropyl-chitosan (HPC). The physicochemical properties of these hydrogel films, such as water content, functional groups, contact angle, surface energy and thermal properties were affected by the composition of the materials. The ability of the MSCs to form colonies, as well as their viability on these materials were also analyzed. The water content of the hydrogel films increased with increasing PEG-MA and HPC ratio in the hydrogel. Contact angle measurements of the surface of the hydrogel films demonstrated that all the materials gave rise to a significantly hydrophilic surface compared to pure pHEMA. The blood protein interactions and platelet adhesion were reduced significantly on the surface of the materials upon the incorporation of PEG-MA compared to the control pure pHEMA and vice versa for HPC. The ability of the MSCs to adhere and form colonies on these materials was also analyzed. The results showed that these materials are suitable candidates to isolate and expand MSCs.

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“…From LWAB model, proposed by van Oss et al [22][23][24], a solid surface free energy is expressed as a sum of apolar Lifshitz-van der Waals component and polar Lewis acid-base component :…”

Section: Surface Free Energy Determinationmentioning

confidence: 99%

“…The surface free energy of after air plasma treated PMMA was determined applying two different theoretical approaches: the contact angle hysteresis (CAH) model [25][26][27][28] and the Lifshitz-van der Waals/acid-base (LWAB) model [22][23][24].…”

Section: Surface Free Energy Determinationmentioning

confidence: 99%

“…Having measured contact angles, the surface free energy of PMMA was determined applying of two different theoretical approaches. That proposed by van Oss et al [22][23][24], in which only the advancing contact angles of three used liquids are applied, and the other one suggested by Chibowski [25][26][27][28] where the hysteresis of contact angles of these liquids are used for calculations. The chemical changes on PMMA surface were also investigated by the IR spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in surface properties of polymethylmethacrylate (PMMA) treated with air plasma

Rymuszka¹,

Terpiłowski²,

Hołysz³

et al. 2015

Annales UMCS, Chemia

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Acid—base interfacial interactions in aqueous media

Cited by 808 publications

References 149 publications

Physicochemical analysis of initial adhesion and biofilm formation of Methanosarcina barkeri on polymer support material

Physicochemical analysis of initial adhesion and biofilm formation of Methanosarcina barkeri on polymer support material

Preparation and characterization of poly(hydroxyethyl methacrylate-co -poly(ethyleneglycol-methacrylate)/hydroxypropyl-chitosan) hydrogel films: Adhesion of rat mesenchymal stem cells

Changes in surface properties of polymethylmethacrylate (PMMA) treated with air plasma

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