Articles made from hydrophilic thermoplastic polyurethane compositions

A method of making a 3D printed article comprising:

• preparing a thermoplastic polyurethane consisting of the reaction product of one poly(ethylene glycol) having a number average molecular weight of 1400 to 8000, an aliphatic diisocyanate, and a chain extender component selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,3-butanediol, 1,5-pentanediol, neopentylglycol, 1,4-cyclohexanedimethanol, 2,2-bis[4-(2-hydroxyethoxy) phenyl]propane, hexamethylenediol, heptanediol, 3-methyl-1,5-pentanediol, ethylenediamine, butanediamine, hexamethylenediamine, hydroxyethyl resorcinol and mixtures thereof, wherein the thermoplastic polyurethane has a crystallization temperature of at least 75° C. measured by DSC, wherein the aliphatic diisocyanate and chain extender component make up a hard segment of the thermoplastic polyurethane and wherein the thermoplastic polyurethane comprises at least 10 wt % hard segment;
• operating a system for solid freeform fabrication of an object, wherein said system comprises a solid freeform fabrication apparatus that deposits small beads of building material in a controlled manner,
• wherein the building material comprises the thermoplastic polyurethane.