R
Ryozo Hasegawa
Researcher at Osaka University
Publications - 3
Citations - 986
Ryozo Hasegawa is an academic researcher from Osaka University. The author has contributed to research in topics: Crystal structure & van der Waals force. The author has an hindex of 3, co-authored 3 publications receiving 919 citations.
Papers
More filters
Journal ArticleDOI
Crystal Structures of Three Crystalline Forms of Poly(vinylidene fluoride)
TL;DR: In this article, an alternately-deflected molecular structure was proposed to release steric hindrance between the fluorine atoms along the chain, and a satistically disordered packing of such deflected chains satisfies the observed fiber period and improves appreciably the structure factor agreement.
Journal ArticleDOI
Molecular Conformation and Packing of Poly(vinylidene fluoride). Stability of Three Crystalline Forms and the Effect of High Pressure
TL;DR: In this article, the formation of three crystalline forms of polyvinylidene fluoride was studied in detail by using an apparatus for heat treatments under high pressure up to 5000 atm.
Journal ArticleDOI
Structural studies of pressure-crystallized polymers. I. Heat treatment of oriented polymers under high pressure
Ryozo Hasegawa,Yasuhiro Tanabe,Masamichi Kobayashi,Hiroyuki Tadokoro,Akira Sawaoka,Naoto Kawai +5 more
TL;DR: A convenient pressure apparatus was designed for crystallization of high polymers under hydrostatic pressure up to 5000 atm, and the effects of pressure on the molecular and crystal structures of the samples are discussed in this article.