solution concentration by weight 中文意思是什麼
solution concentration by weight
解釋
按重量溶液濃度- solution : n. 1. 溶解；溶液，溶體，溶劑。2. （補輪胎用的）橡膠水；〈美國〉藥水。3. 解決，解答 （of; for; to）; 解釋；（數學等的）解法，解式。4. 免除，解除。5. 【醫學】消散，消退。
- concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
- by : adv 1 在側，在旁，在附近。2 （擱）在一邊，（放）到旁邊，（存）在一旁；收著。3 （由旁邊）經過，過...
- weight : n 1 重量；體重；求心力，重力，（地心）引力。2 斤兩，分量，衡，計重單位。3 （壓東西的）重物。4 砝...
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In this article, the micromorphological structure of pva - copper gradient composite film ( mpgcf ) obtained from the electrochemical reduction of a swelling cathode films ( scfs ) was studied by the scaning electronic microscope and the relationship between the micromorphological structure of the composite film and the electrochemical conditions such as the weight ratio of pva to cuc12, the material of the electrode, the concentration of the medium solution, the dring time of scf, the power voltage, the time of the electochemical reaction etc, investigated
本文採用「溶液還原法」制備了一種新型的聚合物基金屬梯度復合材料（ mpgcf ） ? pva /銅梯度復合膜。通過掃描電子顯微鏡觀察了梯度復合膜的形態結構並研究了其形態結構與電化學條件之間的關系。然後在此基礎上，探討了梯度復合膜的形態結構與力學性能之間的關系。 -
Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature. polymers with high yield and high molecular weight were obtained. their structures were characterized by uv, ir, nmr and gpc, respectively. the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region. the relation between fluorescence and polymer structure was studied. the results showed that the molecular chain structure has great influence on fluorescence of the polymers. the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength. the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength, and different emission sites in molecular chains and low emitting yield are shown. the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers
文摘:使用有機金屬銠、金屬鎢/四苯基錫催化劑體系聚合苯乙炔，分別獲得了高產率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分別對聚合物結構進行了表徵.採用不同波長的激發光對聚合物熒光性能進行研究，詳細分析了聚合物結構與熒光性能之間的關系.研究結果發現，不同聚合物結構對聚合物熒光性能產生很大影響，規整性高的聚合物，將有較高的發光量子效率；聚合物規整性差，將可能導致多個熒光發光結構點，其熒光強度降低.聚合物熒光光譜研究將對某些共軛聚合物結構的規整性分析提供一些有用的信息
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