TY - JOUR
T1 - A small-angle x-ray study on polymer films containing crystalline particles of fatty acid
AU - Sakamoto, Yousuke
AU - Hane, Shingo
AU - Ogaguchi, Kazunori
AU - Wakabayashi, Yuusuke
AU - Tsutsui, Kyoji
AU - Wakabayashi, Nobuyoshi
PY - 2003/9
Y1 - 2003/9
N2 - Small-angle and wide angle X-ray scattering studies were carried out on polymer thin films containing microcrystalline behenic acid. Measurements were made on samples in various optical states prepared by appropriate heat treatment. The results were consistent with the picture which presupposes the existence of voids around the crystallites when the composite film is in the opaque state. It was found that, upon cooling, molten behenic acid crystallizes in B or E polymorph, but not in C polymorph. It was concluded that the crystallization temperature for the C form is very low for small particles (0.2-2 μm) so that the molten BA, upon cooling, becomes unstable due to the formation of the crystalline state of the B form at a temperature above the crystallization temperature of the C-form.
AB - Small-angle and wide angle X-ray scattering studies were carried out on polymer thin films containing microcrystalline behenic acid. Measurements were made on samples in various optical states prepared by appropriate heat treatment. The results were consistent with the picture which presupposes the existence of voids around the crystallites when the composite film is in the opaque state. It was found that, upon cooling, molten behenic acid crystallizes in B or E polymorph, but not in C polymorph. It was concluded that the crystallization temperature for the C form is very low for small particles (0.2-2 μm) so that the molten BA, upon cooling, becomes unstable due to the formation of the crystalline state of the B form at a temperature above the crystallization temperature of the C-form.
KW - Behenic acid
KW - Microcrystal
KW - Polymer film
KW - Polymorphs
KW - SAXS
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U2 - 10.1143/jjap.42.5735
DO - 10.1143/jjap.42.5735
M3 - Article
AN - SCOPUS:0344494509
SN - 0021-4922
VL - 42
SP - 5735
EP - 5740
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 9 A
ER -