drs. wei tian & yanhui chen sep-dec. 2014. progress of modern research methods in situ technique...
TRANSCRIPT
《 Modern Research Methods in Polymer
Science》Drs. Wei Tian & Yanhui Chen
Sep-Dec. 2014
Progress of Modern Research Methods
In situ technique
In situ Raman Spectroscopy
In situ Atomic Force Microscope
Hyphenated technique
Chromatography-Nuclear Magnetic Resonance
Chromatography-Mass Spectrometry
X-ray diffraction-Fourier Transform Infrared Spectroscopy
Modern Research Methods in Polymer Science
In situ Raman Spectroscopy
The purpose is to monitor the course of mechanochemical transformations at the molecular level in situ and in real time.
Halasz, I.; et al. Nat. Protocols 2013, 8, 1718-1729.
Experimental section
In situ Raman Spectroscopy
Gracin, D.; et al. Angew Chem Int Edit 2014, 53, 6193-6197.
In situ Raman Spectroscopy
1. Vasiliu, S.; et al. Insights into the Mechanism of Polymer Coating Self-Healing Using Raman Spectroscopy. Appl Spectrosc 2014, 68, 541-548.
2. Bocchetta, P.; et al. Electrosynthesis of Co/PPy nanocomposites for ORR electrocatalysis: a study based on quasi-in situ X-ray absorption, fluorescence and in situ Raman spectroscopy. Electrochim Acta 2014, 137, 535-545.
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Other references
In situ Atomic Force Microscope
Yin, N. N.; et al. J Phys Chem C 2014, 118, 5789-5795.
The purpose is to reveal the structural evolution, from which degradation pathways and kinetics of oligothiophene langmuir−blodgett monolayers are extracted.
Experimental section
In situ Atomic Force Microscope
Yin, N. N.; et al. J Phys Chem C 2014, 118, 5789-5795.
In situ Atomic Force Microscope
Other references1. Tokranov, A.; et al. In Situ Atomic Force Microscopy Study
of Initial Solid Electrolyte Interphase Formation on Silicon Electrodes for Li-Ion Batteries. Acs Appl Mater Inter 2014, 6, 6672-6686.
2. McAllister, Q. P.; et al. In situ atomic force microscopy nanoindentation of lithiated silicon nanopillars for lithium ion batteries. J Power Sources 2014, 257, 380-387.
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Chromatography-Nuclear Magnetic Resonance
Hiller, W.; et al. Prog Polym Sci 2014, 39, 979-1016.
LC-NMR is aimed at the analysis of the molecular heterogeneity of complex macromolecular mixtures, such as molar mass, chemical composition and molecular microstructure.
Chromatography-Nuclear Magnetic Resonance
Hiller, W.; et al. Prog Polym Sci 2014, 39, 979-1016.
The comonomers could be efficiently distinguished by NMR due to the OCH3 signal of PMMA at 3.59 ppm and the OCH2 signal of PnBuMA at 3.95 ppm.
The chemical composition could be evaluated from the OCH3 and OCH2 signal intensities.
Chromatography-Nuclear Magnetic Resonance
Other references1. Hiller, W.; et al. Coupling of NMR and Liquid
Chromatography at Critical Conditions: A New Tool for the Block Length and Microstructure Analysis of Block Copolymers. Macromolecules 2010, 43, 4853-4863
2. Hehn, M.; et al. Direct Quantification of Molar Masses of Copolymers by Online Liquid Chromatography under Critical Conditions-Nuclear Magnetic Resonance and Size Exclusion Chromatography-Nuclear Magnetic Resonance. Anal Chem 2014, 86, 490-497.
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Chromatography-Mass Spectrometry
Pouech, C.; et al. Anal Bioanal Chem 2014, 406, 1493-1507.
In this context, a multiresidue analytical method was developed for the trace analysis of the twenty main additives (and their degradation products) authorized in plastic products.
Chromatography-Mass Spectrometry
Pouech, C.; et al. Anal Bioanal Chem 2014, 406, 1493-1507.
This study presents the first methodology allowing the simultaneous quantification of 24 additives at low ng mL−1.
Chromatography-Mass Spectrometry
Other references1. Pretorius, N. O.; Rode, K.; Simpson, J. M.; Pasch, H.
Analysis of complex phthalic acid based polyesters by the combination of size exclusion chromatography and matrix-assisted laser desorption/ionization mass spectrometry. Anal Chim Acta 2014, 808, 94-103.
2. Tan, G. Y. A.; et al. Enhanced gas chromatography-mass spectrometry method for bacterial polyhydroxyalkanoates analysis. J Biosci Bioeng 2014, 117, 379-382.
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X-ray diffraction-Fourier Transform Infrared Spectroscopy
Tashiro, K.; et al. Macromolecules 2014, 47, 2052-2061.
The purpose is to investigate the hierarchical structure changes occurring in the stress-induced phase transition phenomenon of uniaxially oriented polymer film.
X-ray diffraction-Fourier Transform Infrared Spectroscopy
Tashiro, K.; et al. Macromolecules 2014, 47, 2052-2061.
The stress-induced α−β transition was found to occur not only with the remarkable changes in the molecular chain conformation and chain packing mode in the crystal lattice, but also with the large and reversible change in the lamellar stacking structure.
X-ray diffraction-Fourier Transform Infrared Spectroscopy
Other references1. Tashiro, K; et al. Structural Regularization in the
Crystallization Process from the Glass or Melt of Poly(l-lactic Acid) Viewed from the Temperature-Dependent and Time-Resolved Measurements of FTIR and Wide-Angle/Small-Angle X-ray Scatterings. Macromolecules 2011, 44, 9650-9660.
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