Res. Chem. Intermed.
, Vol. 34, Nos 8–9, pp. 835–844 (2008)
Koninklijke Brill NV, Leiden, 2008.
Also available online - www.brill.nl/rci
A novel and faster route for the synthesis of
polyether–polycarbonate from carbon dioxide and epoxide
through microwave irradiation
MANJU MAMPARAMBATH DHARMAN, JI-YEON AHN, MI-KYUNG LEE,
HYE-LIM SHIM, KYUNG-HOON KIM, IL KIM and DAE-WON PARK
Department of Chemical Engineering, Pusan National University, Busan, 609-735, South Korea
Received 9 July 2007; accepted 29 August 2007
Abstract—The purpose of this study was to investigate the utilization of CO
in order to obtain
polyether–polycarbonate by the co-polymerization of epoxide with CO
using microwave irradiation.
Double metal cyanide containing Zn with Co, Fe(II), Fe(III) and Ni has been utilized as a catalyst
for the co-polymerization reaction. The effect of microwave power, catalyst amount and types of
catalysts has been studied. The microwaves were found to be successful in the synthesis of polyether–
polycarbonate in a shorter reaction time with higher turnover numbers than those in conventional
Keywords: Microwave; polyether–polycarbonate; carbon dioxide; co-polymerization.
Since the ﬁrst reports on microwave-assisted high-speed organic synthesis by
the groups of Gedye and Giguere in 1986 [1, 2], microwaves have attracted
a considerable amount of interest in recent years. The rapid increase in the
number of publications over the past 10 years agrees with the increased interests
for this non-conventional energy source as a driving force for chemical reactions.
This enabled a way to the general availability of new and reliable microwave
instrumentations rather than domestic or modiﬁed microwave ovens. Several reports
and reviews have been published on the utilization of microwaves in organic
synthesis [3–6], such as solvent-free reactions [7, 8], cycloaddition reactions
, synthesis of radioisotopes , fullerene chemistry , polymers ,
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