@article{oai:nagasaki-u.repo.nii.ac.jp:00015841,
 author = {古川, 睦久 and 山口, 幸男 and 横山, 哲夫 and 田中, 武英},
 issue = {3},
 journal = {長崎大学工学部研究報告, Reports of the Faculty of Engineering, Nagasaki University},
 month = {Dec},
 note = {In a previous paper,the authors defined a network polymer composed of different polymeric chains as "heterogeneous network polymer", and reported the synthesis and a few mechanical properties of [PCbzLL]-[PEG-HMDI]type heterogeneous network polymers. In this paper, the heterogeneous network polymers were prepared by crosslinking polylysine chains with hydrocarbon chains through urethane bridges. The following procedures were adopted. [Procedure 1] Interfacial condensation method PLL-HC1 were allowed to react with butanebischloroformate. [Procedure 2] NCA (N-Carboxy anhydride) method Bis-ε-N -carboethyleneoxy-L-lysine was prepared by reacting L-lysine HC1 with butanebischloroformate and then converted to bis-ε-N-carboethyleneoxy-L-lysine N-carboxy anhydride by phosgenation. The network polymers were obtained by the polymerization of bis-NCA. The structures of these network polymers could be varied by changing the molar ratio of amino group of [PLL･HCI] to chloroformate in procedure 1,and by changing the molar ratio of bis-NCA to mono-NCA in procedure 2. The heterogeneous network polymers thus obtained were pale-yellow,stiff or curdy particles from procedure 1, and leathery or resinous fi1m from procedure 2. The polymers swelled in dimethylacetamide, dimethylformamide, dichloroacetic acid, formic acid etc. A typical polymer prepared by procedure 2 showed Tg at -2℃ and high modulus above room temperature., 長崎大学工学部研究報告, (3), pp.88-95; 1972},
 pages = {88--95},
 title = {ウレタン架橋によるポリ‐L‐リジン系ヘテロネットワークポリマーの合成},
 year = {1972}
}