TY - JOUR
T1 - "Coordination-insertion" ring-opening polymerization of 1,4-dioxan-2-one and controlled synthesis of diblock copolymers with ε-caprolactone
AU - Raquez, Jean Marie
AU - Degée, Philippe
AU - Narayan, Ramani
AU - Dubais, Philippe
PY - 2000/1/1
Y1 - 2000/1/1
N2 - This communication deals with the coordination-insertion ring-opening polymerization of 1,4-dioxan-2-one (DX) as initiated by aluminium triiso-propoxide (Al(OiPr)3) either in bulk or in solution. First, polymerization of DX has been carried out in bulk at 100°C and compared to the ring-opening polymerization promoted by tin(II)octoate. Block copolymers of ε-caprolactone (CL) and DX have been then selectively obtained by first initiating CL polymerization with Al(OiPr)3 in toluene and then adding DX to the living PCL macroinitiator solution at room temperature. In spite of the inherent poor solubility of poly(1,4-dioxan-2-one) in most organic solvents, DX polymerization has proven to proceed through a "living" mechanism. Interestingly enough, the semi-crystalline P[CL-b-DX] block copolymers displayed two well separated melting endotherms at ca. 55 and 102°C for PCL and PDX sequences, respectively.
AB - This communication deals with the coordination-insertion ring-opening polymerization of 1,4-dioxan-2-one (DX) as initiated by aluminium triiso-propoxide (Al(OiPr)3) either in bulk or in solution. First, polymerization of DX has been carried out in bulk at 100°C and compared to the ring-opening polymerization promoted by tin(II)octoate. Block copolymers of ε-caprolactone (CL) and DX have been then selectively obtained by first initiating CL polymerization with Al(OiPr)3 in toluene and then adding DX to the living PCL macroinitiator solution at room temperature. In spite of the inherent poor solubility of poly(1,4-dioxan-2-one) in most organic solvents, DX polymerization has proven to proceed through a "living" mechanism. Interestingly enough, the semi-crystalline P[CL-b-DX] block copolymers displayed two well separated melting endotherms at ca. 55 and 102°C for PCL and PDX sequences, respectively.
UR - http://www.scopus.com/inward/record.url?scp=10644285044&partnerID=8YFLogxK
U2 - 10.1002/1521-3927(20001001)21:15<1063::AID-MARC1063>3.0.CO;2-B
DO - 10.1002/1521-3927(20001001)21:15<1063::AID-MARC1063>3.0.CO;2-B
M3 - Article
AN - SCOPUS:10644285044
SN - 1022-1336
VL - 21
SP - 1063
EP - 1071
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
IS - 15
ER -