Effect of humidity on the supramolecular structure of cotton, studied by quantitative spin probing

Article Abstract:

The effects of water content on the physicochemical properties of the amorphous regions in cotton are investigated by measuring the electron paramagnetic resonance (EPR) of TEMPOL nitroxide radicals, deposited in cotton at different loadings as a function of the relative humidity (RH) temperature. The effects are rationalized on the basis of microdomains of different character within cotton, reflecting the variation in pore sizes (0.5-8 nm) and the relaxation behavior of the cellulose chains.

Analysis, Electron paramagnetic resonance, Humidity

---

Pulsed field gradient NMR study of the diffusion of H2O and polyethylene glycol polymers in the supramolecular structure of wet cotton

Article Abstract:

Pulsed Field Gradient (PFG) NMR study of the diffusion of H2O, PEG200, PEG1500, PEG8000, and PEG20000 in wet cotton fibers and H2O in wet cotton linters are presented. PFG NMR study has shown new insights and has highlighted some of the strengths and weakness of PFG NMR when applied to relatively complicated systems such as cotton.

Usage, Nuclear magnetic resonance spectroscopy, Polyethylene glycol, Chemical properties

---

Similar abstracts:

• Abstracts: Effect of atomic layer deposition coatings on the surface structure of anodic aluminum oxide membranes. Protonation of an H(sub 2)O dimer by a Zeolite Bronsted acid site
• Abstracts: Effect of the structure of cobalt nanocrystal organization on the collective magnetic properties. Cobalt(III) effect on (super 27)Ai NMR chemical shifts in LiAl(sub x)Co(sub 1-x)O(sub 2)
• Abstracts: Quantitative link between single-particle dynamics and static structure of supercooled liquids. Characterization of the static disorder in the B850 band of LH2

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.