Finanzpolitik in moll

Schmidt, Kurt; Hasse, Rolf; Molsberger, Josef; Watrin, Christian

doi:10.1515/9783110503920-011

Cited by 1 publication

(5 citation statements)

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“…40 The bands at 1085 and 1026 cm 21 are due to the presence of SiAO bands causing plane vibration. 41 Two weak peaks at 789 and 749 cm 21 were attributed to both out-of-plane OAH bending and external OAH groups. 40 The FTIR spectrum of SDP alone displayed numerous peaks.…”

Section: Resultsmentioning

confidence: 99%

“…40 The FTIR spectrum of SDP alone displayed numerous peaks. A broad peak at 3550-3200 cm 21 and two sharp peaks at 3442 and 3396 cm 21 were attributed to steric hindrance, which prevented hydrogen bonding, by functional groups such as NAH. 40 A peak at 3271 cm 21 corresponded to secondary amide C@O stretching.…”

Section: Resultsmentioning

confidence: 99%

“…In the case of SDP@HNTs, denoted as modified HNTs, inherent peaks at 3698 and 3623 cm 21 indicating AlAOH stretching were maintained from the spectrum of the raw HNTs. However, a new peak indicating symmetric CH 2 stretching of the modified HNTs at 2925 cm 21 appeared in the FTIR spectrum.…”

Section: Resultsmentioning

confidence: 99%

“…The thickness of the potassium bromide pellet was 0.5 mm. Each spectrum was obtained by the averaging of 30 scans taken at a resolution of 2 cm 21 in the range 650-4000 cm 21 .…”

Section: Nanofiber Composite Fabricationmentioning

confidence: 99%

“…Poly(vinyl alcohol) (PVA) is a water‐soluble synthetic polymer that is nontoxic, biocompatible, and biodegradable . With its strong resistance to chemical and thermal treatments, PVA resin and chemically modified hydrogels have been used for many applications .…”

Section: Introductionmentioning

confidence: 99%

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Electrospun poly(vinyl alcohol) composite nanofibers with halloysite nanotubes for the sustained release of sodiumd‐pantothenate

Lee

Chen

et al. 2015

J of Applied Polymer Sci

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Poly(vinyl alcohol) (PVA) nanofibers containing halloysite nanotubes (HNTs) loaded with sodium D-pantothenate (SDP) were successfully fabricated via simple blend-electrospinning. SDP was efficiently loaded into the innate HNT lumen with an SDP/ HNT mass ratio of 1.5:1 via vacuum treatment. The SDP-loaded HNT-inclusion complex was evaluated with drug-loading efficiency testing, Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction. The morphologies of the nanofibers were observed by scanning electron microscopy, which revealed uniform and smooth surfaces of the nanofibers. The addition of HNTs to the composite nanofibers increased the viscosity of the polymer solution, and this suggested shorter fiber diameters. FTIR spectroscopy verified the good compatibility of the SDP and HNTs with PVA. Moreover, the swelling properties were found to quantitatively correlate with weight loss. In vitro drug-release testing revealed that the HNTs and crosslinking reaction most dramatically affected the sustained release of SDP from the PVA and SDP-loaded HNT complex. In the drug-release kinetics model, SDP release depended on the diffusion caused by the deformation of the polymer-based structures in the medium; it followed Fickian diffusion with acceptable coefficient of determination (r 2 ) values between 0.88 and 0.94. Most importantly, the HNTs as natural biocontainers effectively modulated the release profile by loading the active compound in harmony with the electrospun nanofibers.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The thickness of the potassium bromide pellet was 0.5 mm. Each spectrum was obtained by the averaging of 30 scans taken at a resolution of 2 cm 21 in the range 650-4000 cm 21 .…”

Section: Nanofiber Composite Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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