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 英語
発行・発表の年月 2017/03
形態種別 学術雑誌
査読 査読あり
標題 Diverse morphological formations and lamellar dimensions of
poly(ε-caprolactone) crystals in the monolayers grafted onto solid
substrates
執筆形態 共著
掲載誌名 Polymer
掲載区分国外
出版社・発行元 Elsevier
巻・号・頁 112,pp.53-60
著者・共著者 Takayuki Ikehara, Toshiyuki Kataoka
概要 Poly(epsilone-caprolactone) (PCL) chains grafted onto Si substrates, namely PCL brushes, exhibited diverse structures such as dendrites, branched linear crystals, and curved crystals with dendrites when they were isothermally crystallized from melts. The crystallization was possible over a wide range of temperature. The discussion on the lamellar thickness of the dendrites indicated that the equilibrium melting point, Tm , in a grafted layer was higher than the values reported for bulk-crystallized PCL and that the surface free energy of the fold surfaces of lamellae was within the range reported so for. The value of Tm implied that the conformational entropy is reduced in the grafted layers than in bulk. The grafted layers were prepared using a novel "grafting-to" method, where the middle parts of the polymer molecules, instead of the chain ends, are reacted to silanized Si substrates.