AboutGeorge Maxwell Expertise I enjoy the challenge of answering any type of question, but please don't post homework questions just "blank"; include something to show you've had a go :-)
Experience I'm a lecturer in chemistry and chemical education in York, UK, and I also act as a Hazchem adviser to the Fire Service, providing chemical safety information to first responders. My professional role also includes providing emergency poisons advice to UK medical practitioners.
Publications Journal of Chemical Education
TES
Plus independent book publications.
Education/Credentials BSc Chemistry (University of York 2005)
PhD Chemistry (NYU)
PGCE Teaching Certification
Past/Present Clients I have previously volunteered in this category, but owing to an email problem, I am re-regestering. I have taught for both Nottinghamshire and Yorkshire education authorities and for several independent youth organisations. I provide continuing support for North Yorkshire Fire and Rescue Service and the UK Poisons Information Service (London-Based).
Question I've been experiencing some difficulties in making a jello biphospholipid layer. I've noticed most jello will MELT in room temperature within a day and I am not sure what kind of gelatin I am looking for that will stay solid in room temperature (I heard its possible).
Answer Hi, and thanks for your question.
We've never had any problems with Jello not setting; maybe it's the brand?
Jello will not melt at room temperature (in fact, it will decompose before it melts, at about 200 degrees centigrade, following the evaporation of the water content), but if the jelly is mostly water, then both osmosis and diffusion can cause the boundary layers to break down and the jelly will collapse in a puddle, looking like it has melted.
Try using a different brand, or doubling the manufacturer's recommended quantities of ingredients for each cupful- you need a stiff and dry jelly at the end of the curing process. Also, try making each layer separately and storing them in a fridge overnight before constructing the model.
Failing this, you may have to look for another material to model with; hard-setting dough or colored plaster maybe?
Good luck, let me know how it goes and best wishes.
