GROUP 发表于 2025-3-28 14:39:29
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13C NMR of Crosslinked Poly(Methacrylic Anhydride)hermal histories were correlated with infrared spectra and gel permeation chromatographs to detect anhydride crosslinks. Under most baking conditions, thin films of isotactic poly(.-butyl methacrylate) (PtBMA) formed spherulitic crystals upon conversion to isotactic PMAH (i-PMAH), whereas PMAH prepaTEM 发表于 2025-3-28 23:22:27
Application of Solid State 13C NMR Spectroscopy to Sulfur Vulcanized Natural Rubberte . Because solid state .C NMR is a very powerful technique for structure elucidation, it will provide further understanding of the relationships between the crosslink structures and physical properties . Samples prepared under a variety of conditions can be analyzed for evidence of crosOsteons 发表于 2025-3-29 04:48:48
A Solid-State 13C NMR Study of Polysiloxane Side-Chain Liquid Crystalline Polymers Containing 2-[4-(decanyl and octyl was studied using solid-state .C NMR. The spin-lattice relaxation time, T. was measured as a function of temperature at two distinct magnetic fields. The T.’s suggest significant motional increases for the mesogenic unit at the LC transition. The relaxation data indicate that two TAWL 发表于 2025-3-29 10:54:15
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Solid State NMR Relaxation Study of Liquid Crystal Polymers Employing a Two-Dimensional Techniquenal regime. Two-dimensional NMR relaxation spectroscopy is designed to follow these motions and to differentiate the various motional modes. In addition, different types of molecular order, modulated by these motions, are discriminated, likewise.愤愤不平 发表于 2025-3-29 15:37:14
Dynamics of Surface Bound Polymers and Coupling Agents interactions between the components. These interactions take place at the interfacial region. In order to further our understanding of the macroscopic properties, it is necessary to expand our knowledge of the interface at the microscopic level. It is hoped that information about the molecular moti厌倦吗你 发表于 2025-3-29 21:04:17
Solid-State 2H and 13C NMR Study of the Structure of Polyanilinesstable conducting polymer. It is synthesized by the electrochemical or chemical oxidative polymerization of aniline and can exist as a number of unique structures, characterized by the oxidation state, i.e., the ratio of amine to imine nitrogens, and the extent of protonation. These different structdefeatist 发表于 2025-3-30 02:20:39
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29Si and 13C Magic Angle Sample Spinning Nuclear Magnetic Resonance Spectroscopy of Ceramic Fibers P .C magic angle spinning(MAS) NMR. The Si-C-O fibers are partially amorphous and the Si-N-C-O fibers are totally amorphous. A single-pulse FT-NMR technique using ≥ 60s pulse delay with phase cycling and with multiple signal acquisitions (>200) was used. A spinning rate > 4 KHz is required to remove