An Overview on Degree of Dispersion: Conformational Molecular Structure-Interaction Force Relationship of Adsorbed Additive

Abstract:

An overview on molecular structure of adsorbed additive orientates at particle interface in order to understand the ability of dispersants to affect dispersion behaviour is presented. With a wide range of molecular structures, adsorbed additive molecule generates different conformational molecular structure (CMS) combined with interaction of a range of forces occurring with the adsorbed additive molecules and between the adsorbed additive molecules; hence change the surface chemistry of particles in the dispersion.

• Periodical: Advanced Materials Research (Volume 1113)
• Pages: 210-216
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1113.210
• Online since: July 2015
• Authors: Hazlina Husin*, Zulkafli Hassan, Norrulhuda Mohd Taib, Ku Halim Ku Hamid, Suriatie Mat Yusuf
• Keywords: Adsorbed Additive, Interaction Force, Molecular Conformational Structure, Particle Dispersion

References

[1] H. Husin, Y.K. Leong, J. Liu, Characterization of the flocculated-dispersed transition state with dilute oxide suspensions via the critical zeta potential, in: CHEMECA 2011: The 41th Australasian Chemical Engineering Conference, Engineers Australia, Sydney, Australia, (2011).

[2] S. Biggs, P.J. Scales, Y.K. Leong, T.W. Healy, Effects of citrate adsorption on the interactions between zirconia surfaces, Chem. Soc., Faraday Trans., 91 (1995) 2921-2928.

DOI: 10.1039/ft9959102921

[3] C. Lourenco, M. Teixeira, S. Simoes, R. Gaspar, Steric stabilisation of nanoparticles: Size and surface properties, International Journal of Pharmaceutics, 138 (1996) 1-12.

[4] H. Husin, Y.K. Leong, J. Liu, Molecular attributes of an effective steric agent: Yield stress of dispersions in the presence of pure enantiomeric and racemate malic acids, Advanced Powder Technology, 23 (2012) 459-464.

DOI: 10.1016/j.apt.2012.03.002

[5] Y.K. Leong, Role of molecular architecture of citric and related polyacids on the yield stress of a-alumina slurries: Inter- and intramolecular forces, American Ceramic Society, 93 (2010) 2598-2605.

DOI: 10.1111/j.1551-2916.2010.03777.x

[6] B.C. Ong, Y.K. Leong, S.B. Chen, Yield stress-zeta potential relationship of oxide dispersions with adsorbed polyacrylate-steric effect and zeta potential at the flocculated-dispersed transition state, Powder Technology, 186 (2008) 176-183.

DOI: 10.1016/j.powtec.2007.11.047

[7] Y.K. Leong, Molecular configuration of adsorbed cis- and trans-1, 2-ethylene dicarboxylic acids and interparticle forces in colloidal dispersions, American Chemical Society, (2001).

DOI: 10.1021/la015603i

[8] Y.K. Leong, Particle bridging in dispersions by small charged molecules: Chain length and rigidity, architecture and functional groups spatial position, Physical Chemistry Chemical Physics, 9 (2007) 5608-5618.

DOI: 10.1039/b709020j

[9] K.S. Khoo, E.J. Teh, Y.K. Leong, B.C. Ong, Hydrogen bonding and interparticle forces in platelet a-Al2O3 dispersions: Yield stress and zeta potential, Particulate Science and Technology, 25 (2009) 3418-3424.

DOI: 10.1021/la8036204

[10] Y.K. Leong, P.J. Scales, T.W. Healy, D.V. Boger, R. Buscall, Rheological evidence of adsorbate-mediated short-range steric forces in concentrated dispersions, Chem. Soc., Faraday Trans., 89 (1993) 2473-2478.

DOI: 10.1039/ft9938902473

[11] H. Sarraf, L. Skarpova, P. Louda, Influence of different anionic polyelectrolyte dispersants on the rheological and electrokinetic properties of carbon nanotubes, Annual Transactions of the Nordic Rheology Society, 15 (2007).

[12] H. Husin, Y.K. Leong, J. Liu, Conformational molecular structure–surface force correlation of ethylenediaminetetracetic, nitrilotriacetic and (S, S)-ethylenediamine-N, N'-disuccinic acids in a-Al2O3 dispersions, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 395 (2012).

DOI: 10.1016/j.colsurfa.2011.12.002

[13] J. Cesarano III, I.A. Aksay, A. Bleier, Stability of aqueous a-Al2O3 suspensions with poly(methacrylic acid) polyelectrolyte, American Ceramic Society, 71 (1988) 250-255.

DOI: 10.1111/j.1151-2916.1988.tb05855.x

[14] Y. Leong, Molecular Configuration of Adsorbed cis- and trans-1, 2-Ethylene Dicarboxylic Acids and Interparticle Forces in Colloidal Dispersions, American Chemical Society, 18 (2002) 2448-(2009).

DOI: 10.1021/la015603i

[15] A.V.M. Chandramalar, Y.Y. Lim, Y.K. Leong, The effects of cis-trans configuration of cyclohexane multi-carboxylic acids on colloidal forces in dispersions: Steric, hydrophobic and bridging, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 160 (1999).

DOI: 10.1016/s0927-7757(99)00028-x

[16] S. Bertazzo, K. Rezwan, Control of a-alumina surface charge with carboxylic acids, American Chemical Society, 26 (2009) 3364-3371.

DOI: 10.1021/la903140k

[17] Y.K. Leong, Inter-particle forces arising from adsorbed bolaform surfactants in colloidal suspensions, Chem. Soc., Faraday Trans., 93 (1997) 105-109.

DOI: 10.1039/a604953b

[18] Y.K. Leong, D.V. Boger, P.J. Scales, T.W. Healy, Interparticle forces arising from adsorbed surfactants in colloidal suspensions: An additional attractive force Colloid and Interface Science, 181 (1996) 605-612.

DOI: 10.1006/jcis.1996.0418

[19] E.J. Teh, Y.K. Leong, Y. Liu, A.B. Fourie, M. Fahey, Differences in the rheology and surface chemistry of kaolin clay slurries: The source of the variations, Chemical Engineering Science, 64 (2009) 3817-3825.

DOI: 10.1016/j.ces.2009.05.015