@article{oai:nagasaki-u.repo.nii.ac.jp:00000971,
 author = {Motokucho, Suguru and Yamada, Hirotoshi and Suga, Yusuke and Morikawa, Hiroshi and Nakatani, Hisayuki and Urita, Kouki and Moriguchi, Isamu},
 journal = {Polymer},
 month = {May},
 note = {An aliphatic hyper-branched polycarbonate (HBPC) was synthesized as a novel host material for solid polymer electrolytes (SPEs). The HBPC was synthesized through A2 + B3 polymerization to yield a branched polycarbonate structure. HBPC-based SPE films were prepared by drying mixed solutions of HBPC and 1?60?mol% LiClO4. The temperatures for 5% weight loss (Td5s) of the HBPC-based SPEs were in the range of 174.4?189.3?°C, higher than those in normal use. The HBPC-based SPE exhibited higher ionic conductivities (1.86?×?10?4?S?cm?1 at 70?°C and 8.52?×?10?6?S?cm?1 at 30?°C) than a poly(trimethylene carbonate) (LPC)-based SPE (4.79?×?10?6?S?cm?1 at 70?°C and 8.32?×?10?8?S?cm?1 at 30?°C) for 20?mol% lithium content. Activation energies of lithium ion transport for the HBPC- and LPC-based SPEs were estimated to be 11.47 and 15.88?kJ?mol?1, respectively. Introduction of this branched structure in polycarbonates is effective for promoting lithium ion transport., Polymer, 145, pp.194-201; 2018},
 pages = {194--201},
 title = {Synthesis of an aliphatic hyper-branched polycarbonate and determination of its physical properties for solid polymer electrolyte use},
 volume = {145},
 year = {2018}
}