Dynamical Molecular Conformation and Structure of Cluster for Saturated and Unsaturated Fatty Acids in the Liquid State
液态饱和和不饱和脂肪酸的动态分子构象和簇结构
基本信息
- 批准号:10640566
- 负责人:
- 金额:$ 2.18万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The translational movement, the dynamical molecular conformation, and the aggregate structure in the liquid state for three kinds of cis-type unsaturated fatty acids (cis-6-, cis-9-, and cis-11-octadecenoic acids), trans-type unsaturated acid (trans-9-octadecenoic acid), and n-saturated acid (octadecanoic acid) have been studied through the measurements of density, self-diffusion coefficient, ^<13>C NMR spin-lattice relaxation time, and X-ray diffraction. The magnitude of the self-diffusion coefficient, D, fell in sequence of cis-type unsaturated acids > trans-type acids > saturated acid below 350 K.Above 350 K the value of D for the trans-type acid rose to those for the cis-type acids. On the other hand, the density ρ for the acids also fell in the order of cis-type acids > trans-type acid > saturated acid ; the order of the density is just opposite to that expected from the results of the self-diffusion coefficient and other physical properties such as melting point and heat of fusion. This discrepancy between D and ρ values for the acids is well explained by the models of the clusters in their liquids.
通过密度、自扩散系数、^<13>C核磁共振自旋晶格弛豫时间和x射线衍射测量,研究了顺式不饱和脂肪酸(顺式-6-、顺式-9-和顺式-11-十八烯酸)、反式不饱和酸(反式-9-十八烯酸)和n-饱和酸(十八烯酸)的平移运动、动态分子构象和液相聚集结构。自扩散系数D的大小在350 K以下依次为顺式不饱和酸>反式不饱和酸>饱和酸。在350 K以上,反式酸的D值上升到顺式酸的D值。另一方面,各酸的ρ密度依次为顺式酸>反式酸>饱和酸;密度的顺序正好与自扩散系数和其他物理性质(如熔点和熔合热)的结果相反。这些酸的D值和ρ值之间的差异可以用它们的液体中的团簇模型很好地解释。
项目成果
期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
M.Iwahashi,Y.Kasahara,H.Matsuzawa,K.Yagi,K.Nomura,H.Terauchi,Y.Ozaki,and M.Suzuki: "Self-Diffusion,Dynamical Molecular Conformation and Liquid Structures of n-Saturated and Unsaturated Fatty Acids"Journal of Physical Chemistry B.. 104(26). 6186-6194 (2000
M.Iwahashi,Y.Kasahara,H.Matsuzawa,K.Yagi,K.Nomura,H.Terauchi,Y.Ozaki,and M.Suzuki:“n-饱和和不饱和的自扩散、动态分子构象和液体结构
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Makio Iwahashi et al.: "Self-Diffusion,Dynamical Molecular Conformation,and Liquid Structures of n-Saturated and Unsaturated Fatty Acids"Journal of Physical Chemistry B. 104. 6186-6194 (2000)
Makio Iwahashi 等:“n-饱和和不饱和脂肪酸的自扩散、动态分子构象和液体结构”物理化学杂志 B. 104. 6186-6194 (2000)
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- 影响因子:0
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Makio Iwahashi, Yasutoshi Kasahara, Hideyo Matsuzawa, Kenichiro Yagi, Kenji Nomura, Hikaru Terauchi, Yukihiro Ozaki, and Masao Suzuki: "Self-Diffusion, Dynamical Molecular Conformation, and Liquid Structures of n-Saturated and Unsaturated Fatty Acids"Jour
Makio Iwahashi、Yasutoshi Kasahara、Hideyo Matsuzawa、Kenichiro Yagi、Kenji Nomura、Hikaru Terauchi、Yukihiro Ozaki 和 Masao Suzuki:“n 饱和和不饱和脂肪酸的自扩散、动态分子构象和液体结构”杂志
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IWAHASHI Makio其他文献
IWAHASHI Makio的其他文献
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{{ truncateString('IWAHASHI Makio', 18)}}的其他基金
Structure of aggregates of alcohols studied by near-infrared and NMR spectrscopic measurements
通过近红外和核磁共振光谱测量研究醇聚集体的结构
- 批准号:
04640457 - 财政年份:1992
- 资助金额:
$ 2.18万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Molecular Conformation and Liquid Structure of Oleic Acid
油酸的分子构象和液体结构
- 批准号:
02640356 - 财政年份:1990
- 资助金额:
$ 2.18万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)