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Preparation of Flexible and Elastic Poly(trimethylene carbonate) Structures by Stereolithography
Author(s) -
SchüllerRavoo Sigrid,
Feijen Jan,
Grijpma Dirk W.
Publication year - 2011
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201100203
Subject(s) - stereolithography , materials science , ultimate tensile strength , porosity , composite material , propylene carbonate , diluent , elastic modulus , trimethylene carbonate , compression (physics) , carbonate , modulus , polymer , copolymer , chemistry , electrolyte , organic chemistry , electrode , metallurgy
3D porous and non‐porous structures are designed and prepared by stereolithography using resins based on PTMC macromers. Tough, flexible network films prepared in this manner show E moduli of ≈3.8 MPa and high elongations at break >900%; tensile strengths are ≈4.2 MPa. These values increase with increasing PTMC macromer molecular weight. To reach suitable viscosities for processing, up to 45 wt% propylene carbonate is added as non‐reactive diluent. The solid specimens have compression moduli of 3.1–4.2 MPa, similar to the values determined in tensile testing. The built porous structures show porosities of 53–66% and average pore sizes of 309–407 µm. The compression moduli of the porous structures are significantly lower than those of the solid structures.