TY - JOUR
T1 - Sustainable Polyesters Derived from Glucose and Castor Oil
T2 - Building Block Structure Impacts Properties
AU - Shearouse, William C.
AU - Lillie, Leon M.
AU - Reineke, Theresa M.
AU - Tolman, William B.
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/3/17
Y1 - 2015/3/17
N2 - Using the glucose derivatives isosorbide and glucarodilactone along with a castor oil derivative, 10-undecenoyl chloride, two monomers were synthesized: glucarodilactone undecenoate (GDLU) and isosorbide undecenoate (IU). These monomers were polymerized via acyclic diene metathesis (ADMET) polymerization to yield two homopolymers, P(GDLU) and P(IU), and two copolymers, P1(GDLU-co-IU) and P2(GDLU-co-IU), of similar number-averaged molecular weight and relative composition (51 and 61 kDa, Crossed D sign = 1.8 and 1.4, 46:54 and 52:48 mol percent). Comparison of the physical properties and degradation behavior of these polymers revealed divergent characteristics arising from differences in the nature of the carbohydrate building blocks. P(IU) is more thermally stable and has a lower glass transition temperature (Td = 369°C, Tg = -10°C) than P(GDLU) (Td = 206°C, Tg = 32°C) and P1,2(GDLU-co-IU) (Td = 210 and 203°C, Tg = 1 and 7°C). While all of the polymers were stable in acidic and neutral aqueous conditions, the two analogs containing GDLU hydrolytically degraded in the presence of base. Tensile testing of the systems revealed that both homopolymers are brittle materials while the P(GDLU-co-IU) is more tough. Notably, P1,2(GDLU-co-IU) was found to be a rubbery material with a low Young's modulus (0.020 and 0.002 GPa, respectively), displaying an average elongation at break of 480 and 640%, and shape memory properties. (Chemical Equation Presented).
AB - Using the glucose derivatives isosorbide and glucarodilactone along with a castor oil derivative, 10-undecenoyl chloride, two monomers were synthesized: glucarodilactone undecenoate (GDLU) and isosorbide undecenoate (IU). These monomers were polymerized via acyclic diene metathesis (ADMET) polymerization to yield two homopolymers, P(GDLU) and P(IU), and two copolymers, P1(GDLU-co-IU) and P2(GDLU-co-IU), of similar number-averaged molecular weight and relative composition (51 and 61 kDa, Crossed D sign = 1.8 and 1.4, 46:54 and 52:48 mol percent). Comparison of the physical properties and degradation behavior of these polymers revealed divergent characteristics arising from differences in the nature of the carbohydrate building blocks. P(IU) is more thermally stable and has a lower glass transition temperature (Td = 369°C, Tg = -10°C) than P(GDLU) (Td = 206°C, Tg = 32°C) and P1,2(GDLU-co-IU) (Td = 210 and 203°C, Tg = 1 and 7°C). While all of the polymers were stable in acidic and neutral aqueous conditions, the two analogs containing GDLU hydrolytically degraded in the presence of base. Tensile testing of the systems revealed that both homopolymers are brittle materials while the P(GDLU-co-IU) is more tough. Notably, P1,2(GDLU-co-IU) was found to be a rubbery material with a low Young's modulus (0.020 and 0.002 GPa, respectively), displaying an average elongation at break of 480 and 640%, and shape memory properties. (Chemical Equation Presented).
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U2 - 10.1021/acsmacrolett.5b00099
DO - 10.1021/acsmacrolett.5b00099
M3 - Article
AN - SCOPUS:84924943508
SN - 2161-1653
VL - 4
SP - 284
EP - 288
JO - ACS Macro Letters
JF - ACS Macro Letters
IS - 3
ER -