3D printing Flashcards
what is FDM
fuse deposition modelling
How can engineering be used in biology
by applying engineering principles and techniques to mimic human body
explain is FDM Printing method
uses plastics are melted
pushed through a nozzle(fine stream
the printer moves in the x, and y planes until a slice is done
z axis is , moved down an increment and a new slice is printed on the previous
name some thermoplastics used in FDM
Poly-Lactic-Acid (PLA)
Polyethylene Terephthalate (PET)
Acrylonitrile butadiene styrene (ABS)
what are the +ves of FDM
what are the -ve of FDM
what is StereoLithoGraphy+ LCD resin printing
3d printing that uses a Photosensitive resin bath and a laser.
describe StereoLithoGraphy+ LCD resin printing process
3D object sliced and the laser draws each slice in the photosensitive resin which sets
Z-axis moves up a layer
LCD technology similar method
Phone screen to project UV image of each layer onto surface of resin
SL PROS
SL CONS
What to consider about material to use in the lab
what are hydrogels
Hydrogel is a general term used for water swollen and porous materials of polymeric, protein, peptidic, colloidal, surfactant, or lipid origin.
Polymer “Starches” extracted from natural sources:
- Seaweeds
- Agar (powder forms gel when rehydrated)
what is alginate composed of
Composite polymer based on two building blocks:
+ Calcium ions = gel
Acids groups / H-bonds
Chelate Ca2+
how can alginate hydrogels reaction be reversed
add EGTA a kelating agent whiuch strongly binds to Ca removing it
what are hydrogels made from
Polymer “Starches” extracted from natural sources:
- Seaweeds
- Agar (powder forms gel when rehydrated
found in food and pharmaceutical industries packing/bulking agent agents
