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interaction forces between talc and hydrophobic

Interaction forces between talc and hydrophobic particles ...

Interaction forces between talc and hydrophobic particles probed by AFM Viveca Wallqvista,∗, Per M. Claessona,b, Agne Swerina, Joachim Schoelkopfc, Patrick A.C. Ganec a YKI, Ytkemiska Institutet AB/Institute for Surface Chemistry, Box 5607, SE-114 86 Stockholm, Sweden b Department of Chemistry, Surface chemistry, Royal Institute of Technology, SE-100 44

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Interaction forces between talc and hydrophobic particles ...

2006-04-05  The talc particles break preferentially between the crystal layers that are held together by van der Waals forces, exposing more planes than edges and thus talc particles are, statistically, relatively hydrophobic. In various studies, the water contact angle has been found to be 66–90° (e.g.,).

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(PDF) Interaction forces between talc and hydrophobic ...

However, an attractive force pulled the surfaces together from a separation slightly larger than would have been expected considering the van der Waals force alone, which was taken as an indication of the presence of a hydrophobic interaction.In the present study, the interaction forces between cleaved talc surfaces and silanized silica probes, or thiolized gold probes,

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Interaction forces between talc and hydrophobic particles ...

The interactions between a natural talc surface and a model hydrophobic particle have been investigated in aqueous solutions by employing the atomic force

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Interaction forces between talc and hydrophobic particles ...

Interaction forces between talc and hydrophobic particles probed by AFM Patrick Gane , Viveca Wallqvist, Per M. Claesson, Agne Swerin, Joachim Schoelkopf Research output : Contribution to journal › Article › Scientific › peer-review

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Interaction forces between talc and hydrophobic particles ...

The interaction between cleaved talc surfaces and hydrophobic probe particles, silanized silica and thiolized gold, has been investigated employing the atomic force

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Molecular Explanation for Why Talc Surfaces Can Be Both ...

However, at saturation, it is the competition between adhesion and cohesion (water–water interactions) that determines the surface hydrophobicity. The adhesive interactions in talc are strong enough to overcome the unfavorable entropy, and water adsorbs strongly on talc surfaces.

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Interaction forces between talc and hydrophobic particles

Interaction forces between talc and hydrophobic particles probed by AFM Patrick Gane , Viveca Wallqvist, Per M. Claesson, Agne Swerin, Joachim Schoelkopf Research output : Contribution to journal › Article › Scientific › peer-review

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Interaction forces between talc and hydrophobic particles

The interaction between cleaved talc surfaces and hydrophobic probe particles, silanized silica and thiolized gold, has been investigated employing the atomic force

More

Interaction forces between talc and hydrophobic particles

The interaction between cleaved talc surfaces and hydrophobic probe particles, silanized silica and thiolized gold, has been investigated employing the atomic force microscopy (AFM) colloidal probe technique. These model systems have hydrophobicities similar to some of the talc-pitch combinations present during pulp and paper manufacture. The talc surfaces used in this

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Molecular Explanation for Why Talc Surfaces Can Be Both Hydrophilic and Hydrophobic

However, at saturation, it is the competition between adhesion and cohesion (water–water interactions) that determines the surface hydrophobicity. The adhesive interactions in talc are strong enough to overcome the unfavorable entropy, and water adsorbs strongly on talc surfaces.

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Influence of Wetting and Dispersing Agents on the Interaction between Talc and Hydrophobic

The interactions between a natural talc surface and a model hydrophobic particle have been investigated in aqueous solutions by employing the atomic force microscopy (AFM) colloidal probe technique. The results demonstrate the presence of long-range attractive forces due to bridging via preadsorbed or induced bubbles/cavities. Due to the natural heterogeneity of talc,

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Interactions between non-polar surfaces in water

Long-range attractive interactions between talc and hydrophobic model probes, as well as pitch probes, have been measured using the atomic force microscope (AFM) colloidal probe method. Two procedures for preparation of pitch colloidal probes were developed to allow these studies. Model hydrophobic, nanorough surfaces with surface energy characteristics similar to talc

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Interactions between non-polar surfaces in water: Fokus on talc,

It is demonstrated that talc mineral interacts with model hydrophobic particles, as well as with pitch, by long-range attractive forces, considerably stronger than the expected van der Waals force. The possible origin of the measured interaction forces is discussed, and the conclusion is that the main cause is an attractive capillary force due to formation of a gas/vapor capillary between

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Interaction Forces between Talc and Pitch Probed by Atomic Force Microscopy

2007-03-13  Influence of Wetting and Dispersing Agents on the Interaction between Talc and Hydrophobic Particles. Langmuir 2009, 25 (12), 6909-6915. DOI: 10.1021/la900192g. Yuen Yue Tham, Karen R. Stack, Desmond E. Richardson, Paul J.

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Interaction forces between talc and pitch probed by atomic force

2007-04-10  Interaction forces between talc and pitch probed by atomic force microscopy. Wallqvist V(1), Claesson PM, Swerin A, Schoelkopf J, Gane PA. Author information: (1)YKI, Ytkemiska Institutet AB/Institute for Surface Chemistry, Box 5607, SE-114 86 Stockholm, Sweden. [email protected] Colloidal wood resin components present in pulp

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Hydrophobic Interactions - Chemistry LibreTexts

2020-08-15  Hydrophobic interactions describe the relations between water and hydrophobes (low water-soluble molecules). Hydrophobes are nonpolar molecules and usually have a long chain of carbons that do not interact with water molecules. The mixing of fat and water is a good example of this particular interaction. The common misconception is that water and fat

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Interaction forces between talc and hydrophobic particles ...

Interaction forces between talc and hydrophobic particles probed by AFM Patrick Gane , Viveca Wallqvist, Per M. Claesson, Agne Swerin, Joachim Schoelkopf Research output : Contribution to journal › Article › Scientific › peer-review

More

Interactions between non-polar surfaces in water

Long-range attractive interactions between talc and hydrophobic model probes, as well as pitch probes, have been measured using the atomic force microscope (AFM) colloidal probe method. Two procedures for preparation of pitch colloidal probes were developed to allow these studies. Model hydrophobic, nanorough surfaces with surface energy characteristics similar to talc have also been

More

Interaction forces between talc and pitch probed by atomic ...

It is demonstrated that talc mineral interacts with model hydrophobic particles, as well as with pitch, by long-range attractive forces, considerably stronger than the expected van der Waals force. The possible origin of the measured interaction forces is discussed, and the conclusion is that the main cause is an attractive capillary force due to formation of a gas/vapor capillary between the ...

More

Interactions between non-polar surfaces in water: Fokus on ...

The interaction between cleaved talc surfaces and hydrophobic probe particles, silanized silica and thiolized gold, has been investigated employing the atomic force microscopy (AFM) colloidal probe technique. These model systems have hydrophobicities similar to some of the talc-pitch combinations present during pulp and paper manufacture. The talc surfaces used in this study, in the [0 0 1 ...

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Interpretation of Hydrophobization Behavior of ...

the interaction of divalent cations with basal planes and edge surfaces of muscovite and talc by atomic force microscopy (AFM). They got the values of Stern potential of basal and edge planes via fitting the measured force profiles with the DLVO theory and found that on the basal planes of muscovite, the fitted Stern potential became less negative with an increase of Ca2+ or Mg2 ...

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Influence of wetting and dispersing agents on the ...

The interactions between a natural talc surface and a model hydrophobic particle have been investigated in aqueous solutions by employing the atomic force microscopy (AFM) colloidal probe technique. The results demonstrate the presence of long-range attractive forces due to bridging via preadsorbed or induced bubbles/cavities. Due to the natural heterogeneity of talc, and the stochastic

More

Interaction forces between talc and pitch probed by atomic ...

2007-04-10  Interaction forces between talc and pitch probed by atomic force microscopy. Wallqvist V(1), Claesson PM, Swerin A, Schoelkopf J, Gane PA. Author information: (1)YKI, Ytkemiska Institutet AB/Institute for Surface Chemistry, Box 5607, SE-114 86 Stockholm, Sweden. [email protected] Colloidal wood resin components present in pulp are collectively

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Interactions between non-polar surfaces in water: Fokus on ...

The aim of this thesis work was to gain understanding of the interactions between talc mineral and surfaces, liquids and chemicals relevant for industrial applications, such as pulp and paper. Talc ...

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(PDF) Fundamental study on talc–ink adhesion for talc ...

Fundamental study on talc–ink adhesion for talc-assisted flotation deinking of wastepaper. Minerals Engineering, 2007. Jacob Masliyah. Zhenghe Xu. Jianjun Liu. Jacob Masliyah. Zhenghe Xu. Jianjun Liu. PDF. Download Free PDF. Free PDF. Download with Google Download with Facebook. or. Create a free account to download ...

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General hydrophobic interaction potential for surfactant ...

2011-09-20  Using the surface forces apparatus (SFA), the interaction forces between adsorbed monolayers and bilayers of an azobenzene-functionalized surfactant can be drastically and controllably altered by light-induced conversion of trans and cis molecular conformations. These reversible conformation changes affect significantly the shape of the molecules, especially in the hydrophobic

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Mechanisms of ethyl(hydroxyethyl) cellulose–solid ...

All of the above results suggest that the main driving force for EHEC adsorption on talc is hydrogen bonding rather than electrostatic interaction or hydrophobic force. For hydrophobically modified C14-EHEC, hydrophobic force plays a synergetic role in adsorption along with hydrogen bonding.

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Interaction forces between talc and pitch probed by atomic ...

2007-04-10  Interaction forces between talc and pitch probed by atomic force microscopy. Wallqvist V(1), Claesson PM, Swerin A, Schoelkopf J, Gane PA. Author information: (1)YKI, Ytkemiska Institutet AB/Institute for Surface Chemistry, Box 5607, SE-114 86 Stockholm, Sweden. [email protected] Colloidal wood resin components present in pulp

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DETERMINATION OF SURFACE FREE ENERGIES OF TALC FROM ...

interactions, minerals are treated with appropriate surfactants [11, 12]. Acid-base interactions also play a crucial role in controlling these interactions. The knowledge of surface free energy components of talc and pitch and hydrophobic stickies or polymers, originating from different kinds of intermolecular forces is, therefore, very useful for

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Table 1 from Interaction forces between talc and pitch ...

Interaction forces between talc and pitch probed by atomic force microscopy. @article{Wallqvist2007InteractionFB, title={Interaction forces between talc and pitch probed by atomic force microscopy.}, author={V. Wallqvist and P. Claesson and A. Swerin and J. Schoelkopf and P. Gane}, journal={Langmuir : the ACS journal of surfaces and colloids},

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Adsorption and conformation of carboxymethyl cellulose at ...

at the basal planes via hydrophobic force. In contrast, Rath et al. [14] and Jucker et al. [15] proposed that the adsorp- tion of polysaccharide occurs through hydrogen bonding on solids. The objective of this study was to clarify the mechanis-tic aspects of the interactions between CMC and talc using a combination of spectroscopic, microscopic, molecular mod-eling, electrostatic

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Nano‐atomic scale hydrophobic/philic confinement of ...

2020-05-26  In the present work, the specific interaction at the atomic scale between a small peptide (di‐glycine) and the (001) surface of clinochlore, a mineral presenting alternately stacked talc‐like layers (hydrophilic) and brucite‐like sheets (hydrophobic), was characterized by means of a cross‐correlated approach combining atomic force microscopy and density functional

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(PDF) Fundamental study on talc–ink adhesion for talc ...

Fundamental study on talc–ink adhesion for talc-assisted flotation deinking of wastepaper. Minerals Engineering, 2007. Jacob Masliyah. Zhenghe Xu. Jianjun Liu. Jacob Masliyah. Zhenghe Xu. Jianjun Liu. PDF. Download Free PDF. Free PDF. Download with Google Download with Facebook. or. Create a free account to download ...

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Hydrophobicity, Hydrophilicity and Silanes

droplets form on hydrophobic surfaces, implying that cohesive forces associated with bulk water are greater than the forces associated with the interaction of water with the surface (Figure 3). Practically, hydrophobicity and hydrophilicity are relative terms. A simple, quantitative method for defining the relative degree of interaction of a liquid

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frc.2009.2.1167. ADHESIVE AND LONG-RANGE CAPILLARY FORCES ...

Interactions between a hydrophobic probe particle and surfaces with nanoscopic surface features have been investigated. Such surfaces were prepared by polishing or by spin-coating of nano- particles. The surface topography was characterized by AFM, using the methods of high-resolution imaging, low-resolution imaging using the probe particle, and by the rolling ball

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Minerals Engineering International Online - Commodities ...

Minerals Engineering International: Non-Metallic Ores: Talc. Guangjiu Pan, Qing Shi, Guofan Zhang, Ganghong Huang, Selective depression of talc in chalcopyrite flotation by xanthan gum: Flotation response and adsorption mechanism, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 600, 2020 Xuekun Tang, Yanfei Chen, Kun Liu, Qian Peng,

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