Harald Johan Walderhaug

• Walderhaug, Harald; Söderman, Olle & Topgaard, Daniel (2010). Self-diffusion in polymer systems studied by magnetic field-gradient spin-echo NMR methods. Progress in nuclear magnetic resonance spectroscopy. ISSN 0079-6565. 56(4), p. 406–425. doi: 10.1016/j.pnmrs.2010.04.002. Full text in Research Archive
• Walderhaug, Harald & Söderman, Olle (2009). NMR studies of block copolymer micelles. Current Opinion in Colloid & Interface Science. ISSN 1359-0294. 14(3), p. 171–177. doi: 10.1016/j.cocis.2008.10.001. Full text in Research Archive
• Walderhaug, Harald & Söderman, Olle (2009). NMR studies of block copymer micelles. Current Opinion in Colloid & Interface Science. ISSN 1359-0294. 14(3), p. 171–177. doi: 10.1016/j.cocis.2008.10.001. Full text in Research Archive
• Walderhaug, Harald & Knudsen, KD (2008). Microstructures in aqueous solutions of a polyoxyethylene trisiloxane surfactant and a cosurfactant studied by SANS and NMR self-diffusion. Langmuir. ISSN 0743-7463. 24, p. 10637–10645. doi: 10.1021/la800344h. Full text in Research Archive
• Walderhaug, Harald (2007). Structures in a Microemulsion System of an Ethoxylated Polymethylsiloxane Surfactant, Water, and Oil Studied by NMR Self-Diffusion Measurements. Journal of Physical Chemistry B. ISSN 1520-6106. 111, p. 9821–9827. doi: 10.1021/jp073035v. Full text in Research Archive
• Walderhaug, Harald & Johannessen, Espen (2006). Partition Equilibria for Alcohols in Reverse Micellar AOT-Oil-Water Systems Studied by PGSE-FT NMR. A Comparison Between AOT-containing and the Corresponding AOT-free Systems. Journal of Solution Chemistry. ISSN 0095-9782. 35, p. 979–989. doi: 10.1007/s10953-006-9039-8. Full text in Research Archive
• Johannessen, Espen; Walderhaug, Harald & Balinov, Balin (2004). Aqueous Microemulsions of a Fluorinated Surfactant and Oil Studied by PFG-NMR. Langmuir. ISSN 0743-7463. 20(2), p. 336–336. Full text in Research Archive
• Grythe, Kai Frode; Hansen, Finn Knut & Walderhaug, Harald (2004). NMR self-diffusion and viscosity of polyurethane formulations for rocket propellants. Journal of Physical Chemistry B. ISSN 1520-6106. 108, p. 12404–12412. Full text in Research Archive
• Wagner, Joachim; Härtl, Wolfram; Lellig, Christoph; Hempelmann, Rolf & Walderhaug, Harald (2002). Complex Liquids Consisting of Low-Tg Polymer-Colloids : Structure and Self-Diffusion. Journal of Molecular Liquids. ISSN 0167-7322. 98-99, p. 183–190. Full text in Research Archive
• Wagner, Joachim; Härtl, Wolfram & Walderhaug, Harald (2001). Long time self-diffusion in suspensions of highly charged colloids ; A comparison between pulsed field gradient NMR and Brownian dynamics. Journal of Chemical Physics. ISSN 0021-9606. 114(No 2), p. 975–983. Full text in Research Archive Show summary

  The long time self-diffusion of highly charged colloidal particles consisting of polybutylacrylate was studied employing pulsed field gradient NMR (PFGNMR) and Brownian dynamics (BD) simulations. The potential parameters for the Yukawa interaction potential used in the BD simulations were derived from the static structure factor measured by means of dynamic light scattering. The long time self-diffusion coefficients resulting from NMR and BD were compared for different ionic strengths, which cause a screening of the interaction potential due to stray ions. Increasing the ionic strength of the colloidal suspensions, we observed a phase tranition from a crystalline to a liquidlike structure. Whereas at high salt concentrations both long time diffusion coefficients agree within a few percent, at intermediate ionic strengts the values measured via PFGNMR are by a factor 2 higher than those predicted by the BD simulation. This deviation is explained by hydrodynamic interactions which are expected to enhance long time self-diffusion and which are not taken into account in our BD algorithm.

• Andersen, P. O.; Marstokk, Olav; Nyström, Bo & Walderhaug, Harald (2001). Effects of hydrophobic modification and electrostatic interactions on the association behavior in aqueous solutions of poly(vinyl alcohol). A pulsed field gradient NMR study. Macromolecular Chemistry and Physics. ISSN 1022-1352. 202, p. 1457–1465. Full text in Research Archive
• Thuresson, Krister; Nilsson, Susanne; Kjøniksen, Anna-Lena; Walderhaug, Harald; Lindman, Björn & Nyström, Bo (1999). Dynamics and rheology in aqueous solutions of associating diblock and triblock copolymers of the same type. Journal of Physical Chemistry B. ISSN 1520-6106. 103(9), p. 1425–1436. Full text in Research Archive
• Walderhaug, Harald & Nyström, Bo (1999). A pulsed field gradient NMR study of poly(oxyethylene) diffusion in aqueous solutions and gels of ethyl(hydroxyethyl)cellulose-sodium dodecyl sulphate systems. Colloids and Surfaces A: Physicochemical and Engineering Aspects. ISSN 0927-7757. 149, p. 379–387. Full text in Research Archive
• Kopperud, Hilde Beate Molvig; Walderhaug, Harald & Hansen, Finn Knut (1999). Polymer self-diffusion and surfactant bindig in aqueous solutions of unmodified and hydrophobocally modofied polyacrylamide studied by pulsed field gradient NMR and surface tension measurements. Macromolecular Chemistry and Physics. ISSN 1022-1352. 200, p. 1839–1845. Full text in Research Archive
• Walderhaug, Harald (1999). PFG NMR Study of Polymer and Solubilizate Dynamics in Aqueous Isotropic Mesophases of Some Poloxamers. Journal of Physical Chemistry. ISSN 0022-3654. 103(17), p. 3352–3357. Full text in Research Archive
• Walderhaug, Harald & Nyström, Bo (1997). Polymer dynamics and rheology in aqueous solutions and gels of a poloxamer. Trends in Physical Chemistry. ISSN 0972-4435. 6, p. 89–106. Full text in Research Archive
• Walderhaug, Harald; Kjøniksen, Anna-Lena & Nyström, Bo (1997). Diffusion of poly(ethylene oxide) chains in gelling and nongelling aqueous mixtures of ethyl(hydroxyethyl)cellulose and a surfactant by pulsed field gradient NMR. Journal of Physical Chemistry B. ISSN 1520-6106. 101(44), p. 8892–8897. Full text in Research Archive
• Walderhaug, Harald & Nyström, Bo (1997). Anomalous diffusion in an aqueous system of a poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer during gelation studied by pulsed field gradient NMR. Journal of Physical Chemistry B. ISSN 1520-6106. 101(9), p. 1524–1528. Full text in Research Archive
• Nyström, Bo & Walderhaug, Harald (1996). Dynamic Viscoelasticity of an Aqueous System of a Poly(ethylene oxide)-Poly(propylene oxide)-Poly(ethylene oxide) Triblock Copolymer during Gelation. Journal of Physical Chemistry. ISSN 0022-3654. 100, p. 5433–5433. Full text in Research Archive
• Walderhaug, Harald; Nyström, Bo; Hansen, Finn Knut & Lindman, Björn (1995). Interactions of Ionic Surfactants with a Nonionic Cellulose Ether in Solution and in the Gel State Studied by Pulsed Field Gradient NMR. Journal of Physical Chemistry. ISSN 0022-3654. 99, p. 4672–4672. Full text in Research Archive
• Nyström, Bo; Walderhaug, Harald; Hansen, Finn Knut & Lindman, Björn (1995). Rheological Behavior During Thermoreversible Gelation of Aqueous Mixtures of Ethyl(hydroxyethyl) cellulose and Surfactants. Langmuir. ISSN 0743-7463. 11, p. 750–750. Full text in Research Archive
• Hansen, Finn Knut; Nyström, Bo & Walderhaug, Harald (1995). Dynamic Interactions and Adsorption in Systems of Hydrophobically Modified Water-soluble Polymers. Macromolecular Symposia (1986-1993). ISSN 0258-0322. 92, p. 345–345. Full text in Research Archive
• Walderhaug, Harald; Nyström, Bo; Hansen, Finn Knut & Lindman, Björn (1995). Surfactant-polymer interaction in thermo-induced gelling systems of ethyl(hydroxyethyl) cellulose (EHEC) studied by NMR self-diffusion, dynamic light scattering and rheology. Progress in Colloid and Polymer Science. ISSN 0340-255X. 98, p. 51–51. Full text in Research Archive
• Nyström, Bo; Walderhaug, Harald & Hansen, Finn Knut (1995). Dynamic Light Scattering and Rheological Studies of Thermoreversible Gelation of a Poly(ethylene oxide)-Poly(propyleneoxide)-Poly(ethyleneoxide) Triblock Copolymer in Aqueous Solution. Faraday discussions. ISSN 1359-6640. 101, p. 335–335. Full text in Research Archive
• Walderhaug, Harald; Hansen, Finn Knut; Abrahmsen, Susanna; Persson, Karin & Stilbs, Peter (1993). Associative Thickeners. NMR Self-diffusion and Rheology Studies of Aqueous Solutions of Hydrophobically Modified Poly(oxyethylene) Polymers. Journal of Physical Chemistry. ISSN 0022-3654. 97, p. 8336–8336. Full text in Research Archive
• Nyström, Bo; Walderhaug, Harald & Hansen, Finn Knut (1993). Dynamic Crossover Effects Observed in Solutions of a Hydrophobically Associating Water-soluble Polymer. Journal of Physical Chemistry. ISSN 0022-3654. 97, p. 7743–7743. Full text in Research Archive
• Persson, Karin; Abrahmsen, Susanna; Stilbs, Peter; Walderhaug, Harald & Hansen, Finn Knut (1992). The association of urethane-polyethyleneoxide (HEUR) thickeners, as studied by NMR self-diffusion measurements. Colloid and Polymer Science. ISSN 0303-402X. 270, p. 465–465. Full text in Research Archive
• Söderman, Olle; Canet, Daniel; Carnali, Joe; Henriksson, Ulf; Nery, Herbert & Walderhaug, Harald [Show all 7 contributors for this article] (1986). On the Interpretation of Nuclear Magnetic Resonance Relaxation Data from Micellar and Microemulsion Systems. Microemulsion Systems. Full text in Research Archive
• Stilbs, Peter; Söderman, Olle & Walderhaug, Harald (1986). Direct Determination of Motional Spectral Densities for Lithium Dodecyl Sulfate Micellar Dynamics from Analysis of 13C-2H Scalar Relaxation. Journal of magnetic resonance (San Diego, Calif. 1997 : Print). ISSN 1090-7807. 69, p. 411–411. Full text in Research Archive
• Nery, Herbert; Söderman, Olle; Canet, Daniel; Walderhaug, Harald & Lindman, Björn (1986). Surfactant Dynamics in Spherical and Nonspherical Micelles. A Nuclear Magnetic Resonance Study. Journal of Physical Chemistry. ISSN 0022-3654. 90, p. 5802–5802. Full text in Research Archive
• Söderman, Olle & Walderhaug, Harald (1986). Order and Dynamics of the Hydrophobic/Hydrophilic Interface in Microemulsions of the Cosurfactant Type. A 13C NMR Relaxation Study. Langmuir. ISSN 0743-7463. 2, p. 57–57. Full text in Research Archive
• Carnali, Joe; Lindman, Björn; Söderman, Olle & Walderhaug, Harald (1986). A Study of the 13C NMR Relaxation of AOT in Water-in-oil Microemulsions. Langmuir. ISSN 0743-7463. 2, p. 51–51. Full text in Research Archive
• Söderman, Olle; Walderhaug, Harald; Henriksson, Ulf & Stilbs, Peter (1985). NMR Relaxation in Isotropic Surfactant Systems. A 2H, 13C and 14N NMR Study of the Micellar (L1) and Cubic (I1) Phases in the Dodecyltrimethylammonium Chloride/Water System. Journal of Physical Chemistry. ISSN 0022-3654. 89, p. 3693–3693. Full text in Research Archive
• Söderman, Olle; Walderhaug, Harald & Lindman, Björn (1985). A 13C and 2H Nuclear Magnetic Resonance Study of Hydrocarbon Chain Order in Isotropic and Anistropic Phases Formed in the Sodium P-Octylbenzenesulfonate-Short Chain Alcohol-Water System. Journal of Physical Chemistry. ISSN 0022-3654. 89, p. 1795–1795. Full text in Research Archive
• Walderhaug, Harald; Söderman, Olle & Stilbs, Peter (1984). Micellar Dynamics and Organization. A Multifield 13C NMR Spin-lattice and 1H-13C Nuclear Overhauser Effect Study. Journal of Physical Chemistry. ISSN 0022-3654. 88, p. 1655–1655. Full text in Research Archive
• Ahlnäs, Thomas; Söderman, Olle; Walderhaug, Harald & Lindman, Björn (1984). Surfactant Alkyl Chain Mobility and Order in Micelles and Microemulsions. Surfactants in Solution. 1. Full text in Research Archive
• Stilbs, Peter; Walderhaug, Harald & Lindman, Björn (1983). Micellar Fluidity. A Deuterium Nuclear Magnetic Resonance Study of the Anisotropic Reorientation of Solubilized trans-decalin d18. Journal of Physical Chemistry. ISSN 0022-3654. 87, p. 4762–4762. Full text in Research Archive
• Lindman, Björn; Ahlnäs, Thomas; Söderman, Olle; Walderhaug, Harald; Rapacki, K. & Stilbs, Peter (1983). Fourier Transform Carbon-13 Relaxation and Self-diffusion Studies of Microemulsions. Faraday Discussions Chemical Society. ISSN 0301-7249. 76, p. 317–317. Full text in Research Archive

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• Walderhaug, Harald (2010). ECIS 2009 i Tyrkia. Kjemi. ISSN 0023-1983. Full text in Research Archive
• Walderhaug, Harald & Knudsen, Kenneth D. (2009). Structures in Aqueous Solutions of a Polyoxyethylene Trisiloxane Surfactant and Oil Studied by NMR Self-diffusion and SANS Measurements. Full text in Research Archive
• Walderhaug, Harald (2008). ECIS 2008 i Krakow. Kjemi. ISSN 0023-1983. 68(8), p. 20–23. Full text in Research Archive
• Walderhaug, Harald (2007). ECIS 2007 i Geneve. Kjemi. ISSN 0023-1983. p. 16–19. Full text in Research Archive
• Walderhaug, Harald & Knudsen, Kenneth D (2007). Soft nanoparticles based on a non-ionic copolymer. Full text in Research Archive
• Walderhaug, Harald & Knudsen, Kenneth D (2007). Structures in aqueous solutions of an ethoxylated polymethylsiloxane surfactant studied by NMR self-diffusion and small-angle neutron scattering experiments. Full text in Research Archive
• Walderhaug, Harald & Johannessen, Espen (2005). Partition Equilibria for Alcohols in Reverse Micellar AOT-Oil-Water Systems Studied by PGSE-FT NMR. A Comparison Between AOT-containing and Corresponding AOT-free Systems. Full text in Research Archive
• Grythe, Kai Frode; Hansen, Finn Knut & Walderhaug, Harald (2004). NMR Self Diffusion and Viscosity of Polyurethane Formulations for Rocket Propellants. Full text in Research Archive
• Walderhaug, Harald (2004). Aqueous Microemulsions of a Fluorinated Surfactant and Oil Studied by PFG NMR. Full text in Research Archive
• Walderhaug, Harald (1998). A PFG-NMR Study of Polymer Diffusion in Aqueous Systems of Some Poloxamers. Full text in Research Archive
• Hansen, Finn Knut; Nyström, Bo & Walderhaug, Harald (1996). Introduction. Colloids and Surfaces A: Physicochemical and Engineering Aspects. ISSN 0927-7757. 117, p. 17–17. Full text in Research Archive
• Hansen, Finn Knut; Nyström, Bo & Walderhaug, Harald (1994). Assosierende polymerer-et moderne og aktuelt forskningsfelt. Kjemi. ISSN 0023-1983. Full text in Research Archive
• Bendiksen, Bård Andre; Hansen, Eddy Walther & Walderhaug, Harald (2014). Benzenmobilitet i MOF UiO-67 karakterisert med proton lavfelt NMR-målinger -Eksperimenter og simuleringer. Universitetet i Oslo. Full text in Research Archive Show summary

  Dette arbeidet utgjør en preliminær undersøkelse av muligheten for å stu- dere sorbentmobilitet i krystallitter av det metall-organiske rammeverket UiO-67, ved å måle selvdiffusjon med et lavfelt NMR-instrument (0,5 T). UiO-67 materialet har blitt syntetisert, preparert og karakterisert for selvdif- fusjonsmålinger. Tolkningen av selvdiffusjonsmålingene har blitt kombinert med simuleringer av både sorpsjon og dynamikk. Studiet viser at det er mulig å bestemme tidsavhengigheten til utvekslingen av benzen mellom porene i krystallittene, og gassfasen mellom krystallittene. Det blir også vist at det er mulig å bestemme selvdiffusjonen til benzen inne i krystallittene som funk- sjon av temperatur. Diffusjonskoeffisientene som bestemmes er lavere enn for bulk benzen, og viser en tidsavhengighet som skyldes begrensningene porene legger på mobiliteten til benzenmolekylene inne i krystallittene. Tidsavhen- gigheten til diffusjonskoeffisienten blir brukt til å bestemme den gjennom- snittlige krystallittradien. Krystallittradien bestemt fra tidsavhengigheten i diffusjonskoeffisienten er i god overenstemmelse med den gjennomsnittlige krystallittradien som bestemmes med mikroskopi.

• Walderhaug, Harald (2006). Overflater og kolloider i Midtens rike. Media Oslo. Full text in Research Archive
• Walderhaug, Harald (1985). NMR Relaxation in Surfactant Systems. A Study of Molecular Dynamics and Organization. Lunds Universitet. Full text in Research Archive

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