Australian Colloid and Interface Symposium Crowne Plaza Hotel Coogee Beach, Sydney 4–8 February, 2007 Program and Abstracts Table of Contents Welcome and Introduction 1 General Information 3 PROGRAM 5 Plenary and Keynote Speakers 18 ABSTRACTS Spectroscopy and Scattering in Surface and Colloid Science 29 Surface Forces, Nanotribology and Biological Interactions 47 Inorganic Oxide Surfaces 70 Drops and Bubbles 88 Plenary Lectures 101 Hierarchical Materials 103 Frontiers of Colloid and Interface Science 116 Pharmaceutical Applications 142 POSTERS 153 Author Index 236 Cover graphics. The background illustration used for the cover (and other ACIS-2007 publicity material) is an optical micrograph showing the lamellar phase of egg-yolk lecithin mixed with water. The use of crossed polarisers highlights the anisotropic liquid crystalline phase while isotropic regions remain dark. Photograph courtesy of Damyanti Sharma; graphical layout courtesy of Baden Smith. ii 2 Welcome and Introduction It is my pleasure, as Chair of the Organising Committee, to welcome you to the Australian Colloid and Interface Symposium 2007. This is the third in a series of biennial conferences held at Coogee, one of Sydney’s glorious suburban beaches. We hope that you will enjoy several days of discussing top-quality science, and we also hope that you enjoy your visit to this wonderful venue. The main purpose of ACIS is to serve as the national meeting for the Australian colloid and surface science community. Following the success of the previous ACIS meetings in 2003 and 2005, we are also seeing a large amount of interest from overseas. In fact almost 40% of our delegates are international visitors, coming from 16 different countries. It is also very pleasing to have a healthy number of delegates from industry. The level of interest in ACIS 2007 has created one little problem, although as a few people have remarked, it is a nice problem for the conference organisers to have. There was an overwhelming response to our call for abstracts for this meeting, and we have been unable to fit all of the requested talks into the program. We stretched the program to the limits of time and tolerance, but even so, there are a number of authors who will present their work as a poster when they would have preferred an oral presentation. Our apologies to those people, but we trust that everyone will appreciate the high quality of talks and posters to be presented over the next few days, even if it does make for a crowded program. The program has been arranged into a number of themes, each organised by two or three volunteers whose names are listed overleaf. We are deeply grateful to them, and to the theme sponsors, for making such a strong program possible. A particular feature of ACIS 2007 is that one of the themes honours the work of Professor Jacob Israelachvili. I am not sure whether this is closer to his 60th or his 65th birthday celebrations, but in any case his friends in Australia want to take this opportunity to celebrate his numerous contributions to colloid and surface science. Much of that work has its origins in Jacob’s halcyon days at the Australian National University in the late 1970’s and early 1980’s. In addition to the theme chairs and sponsors, bucketloads of thanks are due to our other sponsors whose logos appear on the back cover; to Baden Smith for his graphics work; to Kathryn Prohaska for her work particularly with compiling this book; to Tim Barnes for agreeing to be official photographer; to the cable guy Craig Hackney for looking after AV matters; to Jane Yeaman from Tulips Meetings Management who has looked after countless details of the conference organisation; and above all to my colleagues on the conference organising committee. I had little to do apart from arrange several phone hook-ups, while Erica, Gayle, Jamie, Pat and Russell, using their experience and expertise from previous ACIS meetings, arranged the various aspects required to organise a successful conference. I believe they have done a great job; now it’s over to you, the participants, to make the conference memorable scientifically and enjoyable in all aspects. Roger Horn Chair, Organising Committee ACIS 2007 1 Organising Committee Prof. Roger Horn University of South Australia Chair Dr. Erica Wanless University of Newcastle Secretary Dr. Gayle Morris Victoria University Treasurer Dr. Jamie Schulz ANSTO Webmaster and Local Coordinator Dr. Patrick Hartley CSIRO Molecular & Health Sponsorship Coordinator Technologies Prof. Russell Crawford Swinburne University of Technology Posters and Social Program Ms. Jane Yeaman Tulips Meetings Management Conference Organiser Theme Chairs SPECTROSCOPY AND SCATTERING IN SURFACE AND COLLOID SCIENCE Dr. David Beattie University of South Australia A/Prof. Jim McQuillan University of Otago, NZ SURFACE FORCES, NANOTRIBOLOGY AND BIOLOGICAL INTERACTIONS A/Prof. Michelle Gee University of Melbourne Prof. Roger Horn University of South Australia INORGANIC OXIDE SURFACES A/Prof. George Franks University of Melbourne A/Prof. Jonas Addai-Mensah University of South Australia Dr. Yang Gan University of Newcastle DROPS AND BUBBLES Dr. Ray Dagastine University of Melbourne Prof. Clive Prestidge University of South Australia HIERARCHICAL MATERIALS Dr. Calum Drummond CSIRO Molecular & Health Technologies Prof. Matt Trau University of Queensland FRONTIERS OF COLLOID AND INTERFACE SCIENCE Dr. Shannon Notley Australian National University Dr. Rob Atkin University of Sydney Prof. Greg Warr University of Sydney PHARMACEUTICAL APPLICATIONS Dr. Ben Boyd Monash University Dr. Ian Larson Monash University 2 General Information Name Badges Please wear name badges to all sessions and social events. Name badges are your ticket of admittance to all sessions and social programs. Accompanying guests also need to wear name badges to social events they have been booked in to. Abstract Books A limited number of additional copies of the Conference Abstract Book are available from the registration desk from Tuesday onwards at a cost of $33 each, should you decide to purchase an additional copy. PowerPoint Presentations Talks (apart from Keynote and Plenary talks) will be a total of 20 minutes (15 minutes + 5 minutes for questions). If you are presenting an oral presentation, please bring your PowerPoint presentation with you on a CD or USB/memory stick. You will be able to load your own presentation in the break preceding your session. Poster Presentations If you are presenting a poster presentation, please bring your poster and velcro with you on Monday morning and you will have the opportunity to put your poster up before the sessions start on Monday. Please review the abstract book to determine your abstract number before placing it in the correct location no later than lunchtime on Monday. You will need to stand at your poster during Monday night’s poster session, odd numbers from 6:00pm-7:00pm and even numbers from 7:00pm-8:00pm. You are encouraged to leave your poster up during sessions on Tuesday, however your poster MUST be removed before the drinks break on Tuesday afternoon (3:30pm). Posters should be 'A0' in size (approximately 900 mm wide x 1200 mm high). Message Board A message and notice board will be located adjacent to the registration desk throughout the conference. Emergency phone messages can be left by phoning 0408 498860. Please check the message board regularly if you are expecting a message. Messages cannot be delivered personally. Catering Special Dietary Requirements - Please advise the Conference Secretariat, if you have not already done so, of any special dietary requirements. 3 Accommodation Accommodation Deposits: All pre-paid accommodation deposits have been credited to your hotel accounts. You are required to pay the balance of your account, plus any incidentals, upon departure. If a credit card number was supplied to guarantee your room, this is being used as a guarantee only (unless requested otherwise) and the full account will need to be settled upon departure. Parking Parking at Crowne Plaza Coogee is included for delegates staying at the Crowne Plaza Hotel. The cost for delegates not staying at the hotel is $4 per hour or a maximum of $18 per day. Please note that parking for delegates not staying at the hotel is subject to availability and an early arrival is recommended. Conference Secretariat Tulips Meetings Management ABN: 32 003 901 657 PO Box 116 Salamander Bay NSW 2317 AUSTRALIA Telephone: 02 4984 2554 Facsimile: 02 4984 2755 Email: [email protected] Disclaimer The views expressed by presenters at this conference are not necessarily those of the RACI Colloid and Surface Science Division. Neither the organising committee nor the Division take responsibility for the content of the presentations or the abstracts that appear in this booklet. 4 Program OVERVIEW Sunday 4th 15:00 – 17:00 Registration (Level One, Crowne Plaza Hotel) 17:00 – 19:00 Welcome Reception (Pool Terrace, Crowne Plaza Hotel) Oceanic Ballroom West Oceanic Ballroom East Monday 5th 08:30 Welcome Surface Forces, Spectroscopy and Scattering 08:50 – 17:30 Nanotribology and in Surface & Colloid Science Biological Interactions 18:00 – 20:00 Poster session and drinks Surface Forces, Tuesday 6th 08:00 – 09:40 Inorganic Oxide Surfaces Nanotribology and Biological Interactions 10:10 – 16:20 Inorganic Oxide Surfaces Drops and Bubbles 16:20 – dark Beach time Wednesday 08:30 – 10:30 Plenary Lectures 7th Frontiers of Colloid and 11:00 – 17:30 Hierarchical Materials Interface Science RACI Colloid and Surface Science Division meeting 17:30 All welcome 19:30 – late Conference Dinner Frontiers of Colloid and Thursday 8th 09:00 – 14:40 Pharmaceutical Applications Interface Science 14:40 – 15:00 Closing remarks 5 Monday 5 February OCEANIC BALLROOM WEST 08:30 WELCOME AND OPENING REMARKS (Ballroom East) SPECTROSCOPY AND SCATTERING IN SURFACE AND COLLOID SCIENCE Session Chair: Jim McQuillan Abstract on page 08:50 Keynote: The role of X-ray absorption spectroscopy (XAS) in advancing the 29 Donald Sparks frontiers of environmental interfacial chemistry 09:10 Sparks keynote talk continues.