Recent research has optimized the parameters for 3D printing
with polycaprolactone. In this research synthesized PCL with a molecular weight
near 79 kDa (similar to PolyVivo productAP11) was printed successfully using a Bioscaffolder (Envisiontec GmbH,
Gladbeck, Germany) by extruding the molten polymer through a 23Ga heated nozzle
at 110C and strands were applied onto a collector plate in a layer-by-layer method
at a speed of 350mm/min. The strand
pattern was rotated at 90° angles in between layers which created square pores.
The distance between strands was 0.9 mm with a spindle speed of 200 rpm. The resultant elastic modulus of PCL is
~59MPa but the modulus (compressive) of the scaffold was around 10MPa. Note the
density of crystalline and the amorphous PCL is 1.200 and 1.021 g/cm3,
respectively.
Read: 
Seyednejad, Hajar, Debby Gawlitta, Wouter JA Dhert, Cornelus F.
van Nostrum, Tina Vermonden, and Wim E. Hennink. "Preparation and
Characterization of a 3D-printed Scaffold Based on a Functionalized Polyester
for Bone Tissue Engineering Application." Functionalized Polyesters
7, no. 5 (2012): 87.
For more details or Check out full-text here
http://igitur-archive.library.uu.nl/phar/2012-0222-200652/Seyednejad.pdf#page=87
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