Abhinay Mishra et al.
Journal of biomedical materials research. Part A, 103(12), 3798-3806 (2015-06-23)
Long-term in vitro stability of thermoplastic polyurethanes (TPUs) was studied for up to 52 weeks in phosphate buffer solution at 37, 55, and 80°C. Water uptake, molecular weights, and tensile properties were measured at regular intervals of 4, 8, 16