イケハラ タカユキ   Ikehara Takayuki
  池原 飛之
   所属   神奈川大学  工学部 物質生命化学科
    神奈川大学大学院  工学研究科 工学専攻(応用化学領域)
   職種   教授
言語種別 日本語
発行・発表の年月 2014/07
形態種別 学術雑誌
査読 査読あり
標題 Effects of melt annealing on the miscibility and crystallization of poly(butylene succinate)/poly(ethylene succinate) blends
執筆形態 共著
掲載誌名 Polymer Journal
巻・号・頁 46(7),405-411頁
著者・共著者 Toshiyuki Kataoka, Kohji Hiramoto, Hideo Kurihara and Takayuki Ikehara
概要 We discuss the enhancement in miscibility of crystalline/crystalline blends of poly(butylene succinate) and poly(ethylene succinate) (PBS/PES) by simple melt annealing, their crystallization process and the formation of characteristic phase-separated structure. The immiscible PBS/PES blends changed into miscible blends when annealed at 150 degrees C. Gel permeation chromatography and differential scanning calorimetry measurements suggested that the annealing process caused transesterification between the PBS and PES, resulting in the formation of PBS-PES copolyesters. The unannealed blends exhibited phase-separated melts with constituents that crystallized separately. A PBS-rich layer was formed between the PES-rich phase and the glass substrate from the phase-separated melts of the unannealed blends. In contrast, the miscible annealed blends crystallized by two distinct processes. The first process, successive crystallization, involved PBS spherulite formation in the homogeneous melt and PES spherulite nucleation inside the PBS spherulites. The second process involved the simultaneous nucleation of both components from the melt and penetrating growth of the PES spherulites into the PBS spherulites.