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Extraction of hydrogen-atom positions in polyethylene crystal lattice from wide-angle neutron diffraction data collected by a two-dimensional imaging plate system; Comparison with the X-ray and electron diffraction results

大型イメージングプレートを用いた高角中性子回折によるポリエチレン結晶中の水素原子位置の決定; X線及び電子線回折との比較

田代 孝二*; 田中 伊知朗*; 大原 高志   ; 新村 信雄*; 藤原 悟; 釜江 俊也*

Tashiro, Koji*; Tanaka, Ichiro*; Ohara, Takashi; Niimura, Nobuo*; Fujiwara, Satoru; Kamae, Toshiya*

合成高分子における水素原子の構造情報はこれまでほとんど明らかにされていない。今回、一方向に配向させたポリエチレン及び重水素化ポリエチレンの中性子繊維回折測定をJRR-3のBIX-3回折計を用いて行った。BIX-3の大面積中性子イメージングプレートによって広い逆空間の繊維回折像を測定することによって、試料中の水素及び重水素原子の位置を正確に決定することに成功した。

Two-dimensional wide-angle neutron diffraction patterns have been measured successfully for uniaxially oriented fully deuterated and fully hydrogeneous polyethylene samples by using an imaging plate system (BIX-3) installed at the Japan Atomic Energy Research Institute. The detailed data analysis allowed us to extract the positions of hydrogen atoms in the crystal lattice accurately. The results were compared quantitatively with those obtained from the X-ray and electron diffraction experiments as well as the computer simulation result.

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パーセンタイル:55.64

分野:Polymer Science

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