Collapse of polymer brushes grafted onto planar ... - Wageningen UR

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ASSOCIATION BEHAVIOUR OF GLUCITOL AMINE GEMINI SURFACTANTS SELF-CONSISTENT-FIELD THEORY AND MOLECULAR DYNAMICS SIMULATIONS M. van Eijk, M. Bergsma, S.-J. Marrink CP Kelco, Ved Banen 16, Lille Skensved, 4623, Denmark email: marcel.vaneijk@cpkelco.com ABSTRACT The association behaviour of a number of glucitol amine gemini surfactants has been investigated by means of molecular dynamics and self-consistent-field calculations. We have shown that the titratable head group of the surfactant is responsible for a micelle-to-membrane transition when changing the pH. Furthermore, the association structure of this group of surfactants is shown to be very sensitive to ionic strength. The combination of a charged head group, a spacer, and the hydrophilic glucitol side chains is responsible for the possible structural transitions in the associates as a function of ionic strength and pH.
INFLUENCE OF POLYMERS ON THE BENDING MODULI OF BILAYERS J. van Male, F.A.M. Leermakers Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands email: vanmale@fenk.wau.nl ABSTRACT Surfactant bilayers have a low surface tension. The rigidity of bilayers determines the phase behavior of the bilayer membranes. We investigated the effect of homopolymers on the bending moduli of bilayer membranes by numerical self-consistent field calculations. Adsorbing polymers increase the mean bending modulus k c , resulting in stiffer bilayers and decrease the Gaussian bending modulus k , disfavoring handles between the membranes. Overall, adsorbing polymers stabilize the bilayers. Calculations that approximate the membrane as an inert solid wall give opposite results. This shows that the membrane should be explicitly taken into account.
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Frontis - Wageningen International
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Prof. dr. Hans Fraaije Leiden Unive
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Prof. Ullrich Steiner University of
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Preface Self-consistent field model
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covered by polymers), and R. Rajago
Page 11 and 12: FIRST-ORDER WETTING TRANSITION AT F
Page 13 and 14: MOLECULAR SCF MODELLING OF PORES IN
Page 15 and 16: COLLAPSE OF POLYMER BRUSHES GRAFTED
Page 17 and 18: SURFACE FORCES, SUPRAMOLECULAR POLY
Page 19 and 20: SWEET BRUSHES: SYNTHESIS AND INTERF
Page 21 and 22: EFFECT OF MIXING OF TWO CHARGED PHO
Page 23 and 24: Figure 2 show a semi-log comparison
Page 25 and 26: MODELING OF STATIONARY POLYMER DIFF
Page 27 and 28: THEORY AND SIMULATION OF BILAYER ME
Page 29 and 30: Figure 1. Time evolution of the she
Page 31 and 32: SALT EFFECT TO RAYLEIGH DROPLETS OF
Page 33 and 34: MACROMOLECULES AT INTERFACES, A FLE
Page 35 and 36: APPLICATION OF HETEROGENEOUS LATTIC
Page 37 and 38: 8. Linse, P., 1993b. Phase behavior
Page 39 and 40: MODELING INTERFACIAL EFFECTS ON THE
Page 41 and 42: Using this patterned electrode, we
Page 43 and 44: span the gap between the electrodes
Page 45 and 46: desirable to use a probe with a muc
Page 47 and 48: span the gap between the electrodes
Page 49 and 50: MEMBRANE FUSION: RESULTS FROM SIMUL
Page 51 and 52: the transition temperature T * when
Page 53 and 54: PROTEIN ADSORPTION ON SURFACES WITH
Page 55 and 56: MODELLING STRUCTURE AND ADHESION AT
Page 57 and 58: References 1. Fischel, L.B. and The
Page 59 and 60: MULTIDOMAIN CONFORMATIONS OF RANDOM
Page 61: SUPRAMOLECULAR COORDINATION POLYMER
Page 65 and 66: SPINODAL DECOMPOSITION IN BINARY PO
Page 67 and 68: PERSISTENCE LENGTH OF WORM-LIKE MIC
Page 69 and 70: For small particles with radius R <
Page 71: MEAN-FIELD THEORY FOR THE ADSORPTIO
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Collapse of polymer brushes grafted onto planar ... - Wageningen UR

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