Dec 15, 2023 · The molecular interactions occurring in model hydrated binary mixtures of hydroxypropyl cellulose (HPC) and low-soluble and hydrophobic salicylic acid (SA) (1:1 w/w) were investigated by means of Raman spectroscopy.

Jun 15, 2020 · Raman spectroscopy was used to investigate molecular interactions and the water binding structure in hydrated hydroxypropyl cellulose Klucel® Pharm HPC type MF. During the study, there were examined samples with water content equal to 0.69, 1.41 and 2.17 g/g.

Apr 9, 2018 · Furthermore, we show how metal coating these cellulose photonic architectures leads to plasmonic crystals with excellent optical properties acting as disposable surface-enhanced Raman...

Dec 15, 2023 · Hydroxypropyl cellulose (HPC) photonic films with ordered surface arrays were successfully prepared by double-imprint soft lithography, doping and regulation of cellulose nanocrystals (CNC) can improve their optical and mechanical properties.

Raman spectroscopy provides chemical and compositional infor-mation that can serve as a structural fingerprint for various ma-terials. Therefore, simulations of Raman spectra, including both quantum perturbation analyses and ground-state calculations, are of significant interest.

This paper describes and compares three techniques that can be used to characterize the substituent content of hydroxypropylcellulose (HPC and L-HPC) and hydroxypropyl methylcellulose (HPMC): gas-liquid chromatography (GLC) with a BP1 column and FI detection, 13C-NMR spectroscopy of hydrolysed samples, and Raman spectroscopy.

Silver nanoparticles were fabricated in situ in the hydroxypropyl cellulose (HPC) matrix by irradiation at different wavelengths (365 and 254 nm) following the principles of green chemistry. HPC is involved in the silver reduction process and in the stabilization as well.

Abstract Raman spectroscopy was used to investigate molecular interactions and the water binding structure in hydrated hydroxypropyl cellulose Klucel® Pharm HPC type MF. During the study, there were examined samples with water content equal to 0.69, 1.41 and 2.17 g/g.

Mar 4, 2011 · Raman spectroscopy was used in the study of hydrogen bonding formed by carboxylic groups of poly (acrylic acid) (pAA) between themselves and with the hydroxyl groups of HPC macromolecules.

Figure 1 shows Raman spectra of silica, pure HPC and of the HPC/silica hybrids containing 25 wt. %, 50 wt. ... View in full-text