학술논문
Accurate Structure Analyses of Polymer Crystals on the Basis of Wide-Angle X-ray and Neutron Diffractions / 広角X線回折および広角中性子回折に基づく高分子結晶構造の精密解析
Document Type
Journal Article
Author
Hiroko YAMAMOTO; Ichiro TANAKA; Kaewkan WASANASUK; Katsuhiro KUSAKA; Katsuyoshi KATSUBE; Kazuo KURIHARA; Keisuke MORIKAWA; Kohji TASHIRO; Makoto HANESAKA; Nobuo NIIMURA; Paramita JAYARATRI; Ryota KUROKI; Satoru FUJIWARA; Takaaki HOSOYA; Takashi NISHU; Takashi OHHARA; Taro TAMADA; Tomoji OZEKI; Toshiaki KITANO; Yoshinori YOSHIZAWA; Yukiatsu KOMIYA; 二宗 隆; 勝部 勝義; 北野 利明; 古宮 行淳; 吉澤 功徳; 塙坂 真; 大原 高志; 尾関 智二; 山元 博子; 新村 信雄; 日下 勝弘; 栗原 和男; 森川 佳介; 玉田 太郎; 田中 伊知朗; 田代 孝二; 細谷 孝明; 藤原 悟; 黒木 良太
Source
高分子論文集 / KOBUNSHI RONBUNSHU. 2014, 71(11):508
Subject
Language
Japanese
ISSN
0386-2186
1881-5685
1881-5685
Abstract
The crystal structure analysis of various polymer substances has been reviewed on the basis of wide-angle high-energy X-ray and neutron diffraction data. The progress in structural analytical techniques of polymer crystals have been reviewed at first. The structural models proposed so far were reinvestigated and new models have been proposed for various kinds of polymer crystals including polyethylene, poly(vinyl alcohol), poly(lactic acid) and its stereocomplex etc. The hydrogen atomic positions were also clarified by the quantitative analysis of wide-angle neutron diffraction data, from which the physical properties of polymer crystals have been evaluated theoretically. The bonded electron density distribution has been estimated for a polydiacetylene single crystal on the basis of the so-called X-N method or by the combination of structural information derived from X-ray and neutron diffraction data analysis. Some comments have been added about future developments in the field of structure-property relationship determination.