Magnetic Resonance In Studying Natural And Synthetic Materials

Description

This book describes nuclear magnetic resonance (NMR) methods which are used to study translational dynamics of molecules in different complex systems including systems made of synthetic and natural polymers, tissues and the porous heterogeneous systems of different types, such as cement and wood. The results of proton spin-lattice and spin-spin relaxation, cross-relaxation, pulse field gradient (PFG) NMR in studying diffusion properties and dynamics of molecules in polymer systems of different complexity are reported. In addition to these methods, reports on the use of the double-quantum-filtered (DQF) NMR technique in a study of slow molecular dynamics and properties of systems with anisotropic properties, such as water in hardening cement pastes, are presented. The book also covers applications of one and two dimensional NMR techniques.This book is a useful reference for readers learning different NMR techniques and their applications in civil engineering and biochemistry. CONTENTS FOREWORD FOREWORD 1 FOREWORD 2 FOREWORD 3 FOREWORD 4 PREFACE CONFLICT OF INTEREST ACKNOWLEDGEMENT DEDICATION Basic Principles of NMR and Experimental Techniques INTRODUCTION TO NMR SPIN-LATTICE AND SPIN-SPIN NMR RELAXATION Spin-Lattice (Longitudinal) Relaxation Spin-Spin (Transverse) Relaxation EXPERIMENTAL MATERIALS AND METHODS NMR Techniques for Studying T1,T2 and Cross-Relaxation Pulsed Field Gradient (PFG) NMR in One- and Two-Dimensional Studies Cross-Relaxation in PFG NMR Studies Double-Quantum-Filtered (DQF) NMR Spectroscopy CONCLUDING REMARKS REFERENCES Dynamic Properties of Bound Water in Natural Polymers as Studied by NMR Relaxation NATURAL SILK BOMBYX MORI WITH LOW WATER CONTENT NMR RELAXATION IN NONORIENTED AND ORIENTED COLLAGEN FIBERS NMR Relaxation in ECSD (Randomly Oriented) Collagen Samples NMR Relaxation in Oriented Collagen Fibers CONCLUDING REMARKS REFERENCES NMR Diffusion Studies of Water in Natural Biopolymers 1H NMR STUDY OF THE SELF-DIFFUSION OF WATER IN CROSS-LINKED COLLAGENS SELF-DIFFUSION OF WATER IN BOMBYX MORI SILK AS STUDIED BY NMR CONCLUDING REMARKS REFERENCES Collagen Tissues with Different Degree ofCross-Links and Natural Silk as Studied by1H DQF NMR 1H DQF NMR SPECTROSCOPY IN STUDYING COLLAGENS WITH DIFFERENT DEGREE OF CROSS-LINKS 1H DQF NMR STUDY OF BOMBYX MORI SILK CONCLUDING REMARKS REFERENCES NMR Relaxation and Restricted Self-Diffusion of Water in Wood INTRODUCTION: WATER IN WOOD STUDYING NMR RELAXATION IN WOOD: FROM WET TO DRIED WOOD RESTRICTED DIFFUSION OF WATER IN WOOD: ONE-DIMENSIONAL PFG NMR STUDIES CONCLUDING REMARKS ACKNOWLEDGEMENTS REFERENCES 2D Diffusion-Diffusion Correlation NMR Spectroscopy in Study of Diffusion Anisotropyin Wood INTRODUCTION THEORY AND MODELS IN DIFFUSION-DIFFUSION CORRELATION SPECTROSCOPY (DDCOSY) DDCOSY WITH PARALLEL ORIENTED PAIRS OF GRADIENTS. SIMULATIONS AND EXPERIMENTS ON WOOD 2D DDCOSY WITH PERPENDICULAR PAIRS OF GRADIENTS. INVERSE LAPLACE TRANSFORM IN STUDYING DIFFUSION ANISOTROPY IN WOOD CONCLUSION ACKNOWLEDGEMENTS REFERENCES PFG NMR in Studying Solutions of Carboxylated Acrylic Polymers INTRODUCTION: CARBOXYLATED ACRYLIC POLYMERS SELF-DIFFUSION OF SOLVENT AND POLYMER IN SOLUTIONS OF RANDOM COPOLYMERS IN ISOPROPANOL EFFECT OF POLYMER CONCENTRATION AND BMA/MAA MOLAR RATIO ON HYDROGEN BONDING IN NEUTRALIZED COPOLYMERS SOLVENT AND POLYMER DIFFUSION STUDIES IN NEUTRALISED COPOLYMERS Solvent Diffusion: Effect of mol% BMA in BMA-MAA Random Copolymers and Polymer Concentration at Neutralisation Level TEA:COOH = 1:1 Polymer Diffusion: Effect of BMA/MAA Molar Ratio at Neutralisation Level TEA:COOH=1:1 Polymer and Solvent Diffusion: Different Neutralisation Level (TEA:COOH = 1:1; 0.75:1 and 0.5:1) CONCLUDING REMARKS ACKNOWLEDGEMENTS REFERENCES Copolymer Films Swollen in Water: NMR Relaxation and PFG NMR techniques in Studying Polymer-Water Interactions POLYMER FILMS AND WATER DRIED AND WET POLYMER FILMS: 1H NMR SPECTRA AND T2 STUDIES OF WATER-POLYMER INTERACTIONS Films in Experimental Conditions Dried and Wet Polymer Films: NMR Spectra, FIDs and NMR relaxation Times WATER SELF-DIFFUSION IN THE COPOLYMER FILMS CONCLUDING REMARKS ACKNOWLEDGEMENTS REFERENCES Magnetic Resonance Imaging in Characterisation of Polymer films INTRODUCTION POLYMER FILMS SWOLLEN IN WATER AS STUDIED BY FIDS, T2 AND MRI NMR AND MRI IN STUDYING EVAPORATION OF WATER FROM THE FILMS CONCLUDING REMARKS ACKNOWLEDGEMENTS REFERENCES Self-Diffusion of Water in Cement Pastes as Studied by 1H PFG NMR and DDCOSY NMR INTRODUCTION METHODS AND MODELS Methods of Spin Echo and Stimulated Echo in PFG Experiments DDCOSY Experiments in Studying Anisotropy COMPARISON OF PULSE SEQUENCES IN CEMENT STUDIES SELF-DIFFUSION OF WATER IN CEMENT PASTE Early Hydration of Cement Paste as Studied by 1-dimensional PFG NMR DDCOSY in Studying Early Cement Hydration Pore Size Distribution and Self-diffusion of Water in Mature Cement Paste CONCLUDING REMARKS ACKNOWLEDGEMENTS REFERENCES Characterisation  of  Hydrated  Cement  Pastes  by 1H DQF NMR Spectroscopy 1D AND 2D 1H NMR RELAXATION METHODS AND THEORY: MODEL STUDIES DOUBLE-QUANTUM-FILTERED (DQF) SIGNALS: DEPENDENCE ON SAMPLE CURING AND ON CREATION TIME. PAKE DOUBLET DQF LINE SHAPE DQF AND DRYING THE SAMPLES: EXCHANGEABLE WATER CONCLUDING REMARKS ACKNOWLEDGEMENTS REFERENCES SUBJECT INDEX