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Chapter and Conference Paper
Nucleation and growth kinetics of colloidal silica
A stopped-flow, time- resolved small-angle X-ray scattering study of nucleation and growth of Stöber silica particles is presented. The measured scattered intensity over the scattering wave vector (q) range of...
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Article
Phase separation and structure in a concentrated colloidal dispersion of uniform plates
The structure and phase behaviour of a colloidal dispersion of plate-like particles are described. The plates are nickel (II) hydroxide and have short-range, repulsive interactions and a low polydispersity. As...
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Article
Comparison of the size and shape of ammonium decanoate and ammonium dodecanoate micelles
The size and shape of ammonium decanoate and ammonium dodecanoate micelles as functions of micellar concentration have been studied using the techniques of small-angle neutron scattering and time-averaged lig...
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Chapter
Thermoplastics and Thermosets
The terms thermoplastic and thermoset describe the processability of a material as the temperature is changed. A polymer that becomes plastic and flows on heating, either by reason of crystal melting or by exc...
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Chapter
Neutron Scattering
Neutrons for scientific and engineering investigations are produced either in nuclear reactors or particle beam accelerators. Neutron scattering is a tool employed to determine the structure of materials using...
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Chapter and Conference Paper
Adsorption of gelatin in combination with sodium dodecyl sulfate or hexadecyltrimethylammonium bromide to a polystyrene/water interface
Neutron reflection has been used to measure the adsorption of gelatin, in combination with the surfactants sodium dodecyl sulfate and hexadecyltrimethylammonium bromide, to polystyrene. For gelatin/surfactant ...
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Chapter
Amorphous Polymers
Amorphous is used as a description of the structure of a material and it implies that there is no long-range order such as that found in crystalline or liquid crystalline substances. Such disordered arrangemen...
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Chapter
Crystalline Polymers
Many polymers can crystallise to form regular structures despite their large molecular size. The arrangement will often be with the axis of a polymer chain aligned along one of the crystal axes of the unit cel...
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Article
Preparation of monodispersed plate-like particles of tungstic acid
To understand the properties of colloidal dispersions it is often vital to prepare model materials with particles that have a small polydispersity in order to make experimental tests of theories or models. Ho...
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Chapter
Structure of Dispersions Under Shear
Both neutron and light scattering has been used to study the structural arrangement and the orientation of particles in concentrated colloidal dispersions under shear. This article reviews the results of recen...
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Chapter and Conference Paper
Shear induced alignment of kaolinite: Studies using a diffraction technique
Shear alignment in dispersions of kaolinite particles was measured using neutron diffraction. The orientation distribution of particles was determined as a function of flow rate. The plate normals move towards...
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Chapter
Characterisation of Particle Packing
An investigation has been made of the structure of bimodal mixtures of large particles, A, and small particles, B, by means of small angle neutron scattering. At low number ratios, NB/NA, the results suggest that...
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Chapter
Interaction behaviour in a binary mixture of polymer particles
The behaviour of small charge-stabilised particles (A, radius 168 Å) in the presence of larger particles (B, radius 510 Å) in 6 × 10−5 mol dm−3 sodium chloride solution has been investigated using small-angle neu...
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Chapter and Conference Paper
Scattering studies of mixed micelles formed from C16TAB and C12E6 surfactants
Scattering studies have been performed on a mixed micellar system containing a cationic surfactant C16TAB (hexadecyl trimethylammonium bromide) and a non-ionic surfactant C12E6 (hexaethylene glycol monododecyl et...
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Chapter and Conference Paper
Model hard sphere systems under flow, a novel experimental approach
Experimental determination of the flow-induced structures of particles in suspension have been employed previously to provide a stringent test of models of non-Newtonian behaviour of flowing systems. To date, ...
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Article
Conformational changes of the lecithin headgroup in monolayers at the air/water interface
The headgroup conformation of the phospholipid dipalmitoyl-glycero-phosphocholine (DPPC) in monolayers at the air/water interface has been studied by neutron reflection in the fluid like liquid-expanded (LE) a...
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Book and Conference Proceedings
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Chapter
Neutron-scattering techniques
Neutrons have been available to scientists for about sixty years but it is only in the last 25 years that they have been widely exploited as a tool in condensed matter research. This is largely due to the adve...
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Chapter and Conference Paper
Characterization of worm-like micelles with solubilized dye molecules using static and dynamic light scattering
A water-insoluble dye has been solubilized using the cationic surfactant tetradecyltrimethylammonium bromide. At certain concentrations of added potassium bromide giant micelles are present containing large am...
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Chapter
Chain fragmentation and fragment diffusion at the glass transition
Polymer chain diffusion was measured by SANS using a new technique. The chains of a copolycarbonate were fragmented, in blends with tetramethylpolycarbonate, in the glassy state, so that the split chains remai...
