✦ LIBER ✦

The state of water on hydrated collagen as studied by pulsed NMR

✍ Scribed by B. M. Fung; John Witschel Jr.; Lavon L. McAmis

Publisher: Wiley (John Wiley & Sons)
Year: 1974
Tongue: English
Weight: 494 KB
Volume: 13
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1974.360130910

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The spin‐lattice relaxation time (T~1~) of water adsorbed on collagen fibers was determined at six frequencies and temperatures varying from 25° to −80°C. Care was taken to eliminate the contributions to the signal of protons other than those in the adsorbed water. Quantitative calculations were made on T~1~ and the results were compared with the experimental data. It is suggested that a maximum of about 0.50–0.55 g water per g collagen forms a hydration layer, which cannot be frozen down to −90°C and exhibits a distribution of motional correlation times. For collagen samples containing a larger quantity of adsorbed water, the additional water molecules behave like ordinary isotropic water, having a single correlation time and a freezing temperature of about −10°C.

📜 SIMILAR VOLUMES

Self-diffusion of water in cartilage and

Self-diffusion of water in cartilage and cartilage components as studied by pulsed field gradient NMR

✍ R. Knauss; J. Schiller; G. Fleischer; J. Kärger; K. Arnold 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 237 KB 👁 1 views

Pulsed field gradient (PFG) nuclear magnetic resonance (NMR) was used to investigate the self-diffusion behavior of water molecules in cartilage, polymeric cartilage components, and different model polymers. The short-time self-diffusion coefficients (diffusion time ⌬ D 13 msec) are found to decreas

The influence of hydration on the confor

The influence of hydration on the conformation of bovine serum albumin studied by solid-state 13C-nmr spectroscopy

✍ Roger B. Gregory; Mahinda Gangoda; R. K. Gilpin; Wen Su 📂 Article 📅 1993 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 489 KB 👁 2 views

Structure of GlyGly peptide in the cryst

Structure of GlyGly peptide in the crystalline state as studied by X-ray diffraction and solid state 13C-NMR methods

✍ T. Kameda; N. Takeda; S. Ando; I. Ando; D. Hashizume; Y. Ohashi 📂 Article 📅 1998 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 140 KB 👁 2 views

A new type of crystal of glycylglycine (GlyGly) hydrate was crystallized from an aqueous solution, and the structure of the crystal has been determined by x-ray diffraction. The crystal is monoclinic, and the space group is C2/c, with the cell constants of a Å 15.941(2) A ˚, b Å 4.774(2) A ˚, c Å 19

ChemInform Abstract: Effect of Milling o

ChemInform Abstract: Effect of Milling of V2O5 on the Local Environment of Vanadium as Studied by Solid-State 51V NMR and Complementary Methods.

✍ A. A. Shubin; O. B. Lapina; E. Bosch; J. Spengler; H. Knoezinger 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 30 KB 👁 1 views

Effect of Milling of V 2 O 5 on the Local Environment of Vanadium as Studied by Solid-State 51 V NMR and Complementary Methods. -Milling of V 2 O 5 in a ball mill increases the surface area from 7 to a maximum of 32 m 2 /g. Simultaneously, XRD line broadening suggests a reduction of the microcrystal

Effect of oxidized carbon black on the m

Effect of oxidized carbon black on the mechanical properties and molecular motions of natural rubber studied by pulse NMR

✍ Shigeo Asai; Hiromune Kaneki; Masao Sumita; Keizo Miyasaka 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 341 KB 👁 1 views

Zirconium(IV) Complexes of Oxydiacetic A

Zirconium(IV) Complexes of Oxydiacetic Acid in Aqueous Solution and in the Solid State as Studied by Multinuclear NMR and X-ray Crystallography

✍ Weiwen Ma; Henk van Koningsveld; Joop A. Peters; Thomas Maschmeyer 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 141 KB 👁 2 views