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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/7119


    Title: Study on the Properties of a Poly(hexamethylene adipamide) Film at the Air/Water Interface
    Authors: Wang,L. F.;Kuo,J. F.;Chen, Chih-Yu
    Contributors: 輔英科技大學 應用化學及材料科學系
    Keywords: Poly(hexamethylene adipamide);Air-water interface;Hysteresis;Pressure relaxation
    Date: 1995-04
    Issue Date: 2010-10-15 16:35:38 (UTC+8)
    Abstract: A monolayer film of poly(hexamethylene adipamide) (nylon 66) was obtained by spreading N-trifluoroacetic anhydride (NTF)- modified nylon 66 in chloroform solution on an air-water interface at 14.7 �C. The pressure relaxation in a constant area and hysteresis of the film were measured. The surface moment versus surface area isotherm shows that the film holds the same conformation over the surface area region between 120 and 52.6 �2/repeat-unit, and collapses at 52.6 �2/repeat-unit. However, pressure relaxation at a constant surface area smaller than some transition value between 85 and 70 �2/repeat-unit and significant hysteresis were observed. These phenomena were attributed to the effect of intermolecular interaction of hydrogen bonding. The mechanism of collapse was evaluated using the Avrami crystallization equation. Two-step crystallization was observed.
    Relation: Materials Chemistry and Physics,Volume 40, Issue 3, Pages 197-201
    Appears in Collections:[應用化學及材料科學系] 期刊論文

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