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Chemical & Physical Properties of Select Polymers


Chemical Properties

Polymer Inherent Viscosity (dL/g) Crystalline Melt Transition(°C) Glass Transition Temp (°C) Solubility(at 5% w/w) Approx. Resorption (months)
50:50 DL-PLG 0.55 - 0.75 Amorphous 45 - 50 1 2 3 4 5 6 1 - 2
65:35 DL-PLG 0.55 - 0.75 Amorphous 45 - 50 1 2 3 4 5 6 3 - 4
75:25 DL-PLG 0.55 - 0.75 Amorphous 50 - 55 1 2 3 4 5 6 4 - 5
85:15 DL-PLG 0.55 - 0.75 Amorphous 50 - 55 1 2 3 4 5 6 5 - 6
DL-PLA 0.55 - 0.75 Amorphous 50 - 60 1 2 3 4 5 6 12 - 16
L-PLA 0.90 - 1.20 173 - 178 60 - 65 1 4 5 >24
PCL 1.00 - 1.30 58 - 63 (-65) - (-60) 1 4 5 >24
25:75 DL-PLCL 0.70 - 0.90 Amorphous (-50) - (-40) 1 4 5  
80:20 DL-PLCL 0.70 - 0.90 Amorphous 17 - 23 1 4 5  

Solvents (partial listing only)

1 = dichloromethane 2 = tetrahydrofuran 3 = ethyl acetate 4 = chloroform 5 = hexafluoroisopropanol 6 = acetone


Physical Properties

Polymer Density (g/mL) Tensile Strength (psi) Elongation (%) Modulus (psi)
50:50 DL-PLG 1.34 6000 - 8000 3 - 10 2 - 4x105
65:35 DL-PLG 1.3 6000 - 8000 3 - 10 2 - 4x105
75:25 DL-PLG 1.3 6000 - 8000 3 - 10 2 - 4x105
85:15 DL-PLG 1.27 6000 - 8000 3 - 10 2 - 4x105
DL-PLA 1.25 4000 - 6000 3 - 10 2 - 4x105
L-PLA 1.24 8000 - 12000 5 - 10 4 - 6x105
PCL 1.11 3000 - 5000 300 - 500 3 - 5x104
25:75 DL-PLCL 1.15 ~1100 ~600 5x104 - 2x105
80:20 DL-PLCL 1.22 ~750 ~150 6x104 - 2x105

DL-PLG = poly(DL-lactide -c o -glycolide), DL-PLA = poly(DL-lactide), L-PLA = poly(L-lactide), PCL = poly(ε-caprolactone)