Two-Dimensional Correlation Vibrational Spectroscopy Study on Intermolecular Interactions in Polymer Blends

聚合物共混物分子间相互作用的二维相关振动光谱研究

• 批准号: 09640616
• 负责人: OZAKI Yukihiro
• 金额: $ 1.92万
• 依托单位: Kwansei Gakuin University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09640616/
• 关键词: Polymer; Polymer blends; Two-dimensional Correlation Spectroscopy; Vibrational Spectroscopy; Intermolecular Interaction; Hydrogen-Bonds; 赤外分光法; 相溶性

Two-dimensional infrared, Raman, near-infrared (2D IR, 2D Raman, 2D NIR) correlation spectroscopy and hetero 2D correlation spectroscopy have been applied to the studies of the conformational changes and specific interactions in various polymer blends such as those of atactic polystyrene (PS) and poly(2,6-dimethyl-1,4-phenylene ether)(PPE), It was found that 2D vibrational correlation spectroscopy is powerful in detecting bands which are not readily identified in onedimensional spectra. The 2D synchronous correlation analysis separates the NIR bands of PS from those of PPE.The 2D asynchronous correlation analysis produces cross peaks that are indicative of the specific interaction or the conformational change in the blends. It is concluded from the 2D correlation analysis that not only the phenyl rings of PS and PPE but also the CH_3 groups of PPE play important roles in the formation of the blends.The 2D Raman-NIR heterospectral correlation spectroscopy was employed to investigate intermolecular interactions in the blends of poly(methyl methacrylate) (PMMA) and poly(4-vinyiphenol) (PVPh). Ten blends of PMMA/PVPh studied contained small PVPh contents from 1 to10 weight percentages. 2D hetero correlation spectroscopy was first applied to separate the weak vibrational bands of the minority PVPh from the strong bands of the principal PMMA, and then to detect the intermolecular interactions between PMMA and PVPh. The Raman-NIR hetero-correlation analysis detects two bands at 6764 and 4637 cm_<-1> for the hydrogen-bonded hydroxyl group of PVPh, and one band at 5052 cm_<-1> for the hydrogen-bonded carbonyl group of PMMA.All these bands are not identifiable from the one-dimensional spectra.

二维红外线，拉曼，近红外（2d ir，2d Raman，2d NIR）相关光谱和杂型2D相关光谱已应用于构象变化和各种聚合物混合物（例如雄性聚合物）中的构象变化和特异性相互作用的研究，例如雄性（PS）和pS-6-dimeTER（PS）pS-6-二氨基乙烯基（PS）。发现2D振动相关光谱在检测带有一维光谱中不容易鉴定的带中具有强大的功能。 2D同步相关分析将PS的NIR带与PPE的NIR带分开。2D异步相关分析产生的交叉峰表明了混合物中的特定相互作用或构象变化。从2D相关分析得出的结论是，不仅PS和PPE的苯基环，而且CH_3组在混合的形成中起着重要作用。2DRaman-Nir相关性光谱频谱均采用用于研究聚（甲基甲基甲基甲基甲基）（甲基甲基）（甲基甲基）（甲基甲基甲基）（4）（ （PVPH）。研究的PMMA/PVPH的十种混合物包含1至10个重量百分比的小pvph含量。首先采用2D杂音相关光谱将少数PVPH的弱振动带与主要PMMA的强条分开，然后检测PMMA和PVPH之间的分子间相互作用。 Raman-NIR异质相关分析在6764和4637 cm _ <-1>中检测两个频段，用于氢键键入PVPH的羟基，一个频带在5052 cm _ <-1>下以5052 cm _ <-1>的频率用于PMMA的氢键碳纤维基团。这些频段均无法识别。

项目成果

Y.Ren,M.Shimoyama,T.Ninomiya K.Matsukawa,H.Inoue,I.Noda,Y.Ozaki: "Two-Dimensional Near-Infrared Correlation Spectroscopy Studies on Composition-Dependent Spectral Variations in Ethylene/Vinyl Acetate Copdymers;Assignments of Bands due to Ethylene Units in

Y.Ren，M.Shimoyama，T.Ninomiya K.Matsukawa，H.Inoue，I.Noda，Y.Ozaki：“乙烯/醋酸乙烯酯共聚物中成分依赖性光谱变化的二维近红外相关光谱研究；

M.Shimoyama, K.Matsukawa, H.Inoue, T.Ninomiya, Y.Ozaki: "Two-Dimensional Near-Infrated Correlation Spectroscopy Studies of Polymer Blends 1 : Composition-Dependent Spectral Variations of Atactic Polystyrene and Poly (2,4-Dimetyle-1,4-Phenyrene Ether)" Mac

M.Shimoyama、K.Matsukawa、H.Inoue、T.Ninomiya、Y.Ozaki：“聚合物共混物的二维近红外相关光谱研究 1：无规聚苯乙烯和聚 (2,4-

M.Shimoyama,S.Hayano,K.Matsukawa H,Inoue,T.Ninomiya,Y,Ozaki: "Discrimination of Ethylene/Vinyl Acetate Copolymers with Different Composition and Prediction of Content of Vinyl Acetate in the Copolymers and Their Melting Points by Near-infrared Spectroscop

M.Shimoyama,S.Hayano,K.Matsukawa H,Inoue,T.Ninomiya,Y,Ozaki：“不同组成的乙烯/醋酸乙烯酯共聚物的判别以及通过近场分析预测共聚物中醋酸乙烯酯的含量及其熔点

Y.Ren,Y.Ozaki,T.Murakami T.Nishioka,K.Nakashima: "Two-Dimensional Near-Infrared Correlation Spectroscopy Studies of Polymer Blends I:Composition-Dependent Spectral Variations of Blends of Atactic Polystyrene and poly[2,6-Dimethyl-1,4-phenylene Ether]" Mac

Y.Ren,Y.Ozaki,T.Murakami T.Nishioka,K.Nakashima：“聚合物共混物的二维近红外相关光谱研究 I：无规聚苯乙烯和聚共混物的成分依赖性光谱变化[2,6

M.Shimoyama, S.Hayano, K.Matsukawa, H.Inoue, T,Ninomiya, Y.Ozaki: "Discrimination of Ethylene/Vinyl Acetate Copolymers with Different Composition and Prediction of Content of Vinyl Acetate in the Copolymers and Their Melting points by Near-intrated Spectr

M.Shimoyama, S.Hayano, K.Matsukawa, H.Inoue, T,Ninomiya, Y.Ozaki：“不同组成的乙烯/醋酸乙烯酯共聚物的判别以及共聚物中醋酸乙烯酯含量及其熔点的预测