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Magnetic resonance imaging study of the swelling kinetics of hydroxypropylmethylcellulose (HPMC) in water.
Magnetic resonance imaging has been used to monitor the hydration of hydroxypropylmethylcellulose samples by two-dimensional mapping of properties such as spin density and relaxation times. TheExpand
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An NMR relaxation study on the hydrogen dynamics in malonic acid
Abstract We have studied the temperature and angular dependences of the spin—lattice relaxation time T 1 in malonic acid. The results suggest that the hydrogen bonded protons of the cyclic dimersExpand
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The crystal structure and evidence of the phase transition in D-amphetamine sulfate, as studied by X-ray crystallography, DSC and NMR spectroscopy
X-Ray crystallography, DSC and NMR spectroscopy methods have been used to study the phase transition of D-amphetamine sulfate. The phase transition temperature occurs at about 325 K, and belongs toExpand
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The swelling properties of hydroxypropyl methyl cellulose loaded with tetracycline hydrochloride: magnetic resonance imaging study.
Magnetic resonance imaging was used to study the behavior of the gel layer thickness in hydroxypropyl methyl cellulose (HPMC) matrices loaded with different amounts of soluble tetracyclineExpand
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MRI study of Fickian, case II and anomalous diffusion of solvents into hydroxypropylmethylcellulose
Magnetic resonance imaging was used to investigate the diffusion and swelling processes of a hydroxypropylmethylcellulose (HPMC) matrix. Polymer in the form of a cylinder was hydrated in a waterExpand
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Spin-lattice relaxation study of the methyl proton dynamics in solid 9,10-dimethyltriptycene (DMT).
Proton spin-lattice relaxation studies are performed for powder samples of 9,10-dimethyltriptycene (DMT) and its isotopomer DMT-d(12) in which all the non-methyl protons in the molecule are replacedExpand
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Molecular dynamics of the methylammonium cation in [CH3NH3]5Bi2Cl11.
The 1H relaxation times T1 of methylammonium in chlorobismuthate(III) were measured in the temperature range from 50 to 270 K with a SXP 4/100 Bruker pulse spectrometer at 55.2 MHz. It was found thatExpand
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The influence of the superplasticizer on the hydration and freezing processes in white cement studied by 1H spin-lattice relaxation time and single point imaging
The influence of the superplasticizer Sikament 92 on the hydration process of white cement paste and freezing behavior of hardened white cement was investigated by 1H spin-lattice relaxation andExpand
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Hydration of Hydroxypropylmethyl Cellulose: Effects of pH and Molecular Mass
Magnetic resonance imaging was used to study the diffusion of a water solution of hydrochloric acid (HCl) and sodium hydrochloride (NaOH) into hydroxypropylmethyl cellulose matrices. Polymer in theExpand
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