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Wyszukujesz frazę "(3-aminopropyl) triethoxysilane" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
The effect of alkyd resin on the stability of binding (3-aminopropyl) triethoxysilane with cellulose and wood
Autorzy:
Ratajczak, I.
Rzepecka, E.
Wozniak, M.
Szentner, K.
Mazela, B.
Powiązania:
https://bibliotekanauki.pl/articles/52401.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
alkyd resin
stability
(3-aminopropyl) triethoxysilane
cellulose
wood
FTIR method
atomic absorption spectrometry
Opis:
Experiments were conducted using (3-aminopropyl) triethoxysilane (APTES) and alkyd resin in order to improve the reactivity of wood protective preparations with wood. The results presented concern a structural analysis (FTIR, AAS) of modified cellulose and wood, both after chemical reactions with silanes and after water extraction. The FTIR spectrum of pine wood powder was presented after a reaction with organosilane preparations and with the addition of alkyd resin, and then after water extraction. The FTIR analysis detected vibrations of Si-C, Si-O and N-H groups, indicating permanent bonding with the organosilane preparation. The presence of bands at 710 cm-1 (characteristic of vibrations of the silicon bond with an atom of carbon and oxygen) and at 1600-1580 cm-1 (characteristic of deformation vibrations of N–H coming from the amine group) confirmed the reactivity of these preparations with the wood. The results of atomic absorption spectrometry confirmed the stability of the organosilane bonds with the cellulose and the wood.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2015, 58, 195
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and evaluation of radiolabeled, folic acid-PEG conjugated, amino silane coated magnetic nanoparticles in tumor bearing Balb/C mice
Autorzy:
Razjouyan, J.
Zolata, H.
Khayat, O.
Nowshiravan, F.
Shadanpour, N.
Mohammadnia, M.
Powiązania:
https://bibliotekanauki.pl/articles/147452.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
superparamagnetic iron oxide nanoparticles (SPIONs)
(3-aminopropyl) triethoxysilane (APTES)
poly(ethylene glycol) (PEG)
folic acid
KB cells
copper-64
Opis:
To design a potent agent for positron emission tomography/magnetic resonance imaging (PET/MRI) imaging and targeted magnetic hyperthermia-radioisotope cancer therapy radiolabeled surface modified superparamagnetic iron oxide nanoparticles (SPIONs) were used as nanocarriers. Folic acid was conjugated for increasing selective cellular binding and internalization through receptor-mediated endocytosis. SPIONs were synthesized by the thermal decomposition of tris (acetylacetonato) iron (III) to achieve narrow and uniform nanoparticles. To increase the biocompatibility of SPIONs, they were coated with (3-aminopropyl) triethoxysilane (APTES), and then conjugated with synthesized folic acid-polyethylene glycol (FA-PEG) through amine group of (3-aminopropyl) triethoxysilane. Finally, the particles were labeled with 64Cu (t1/2 = 12.7 h) using 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid mono (N-hydroxy succinimide ester) DOTA-NHS chelator. After the characterization of SPIONs, their cellular internalization was evaluated in folate receptor (FR) overexpressing KB (established from a HeLa cell contamination) and mouse fibroblast cell (MFB) lines. Eventually, active and passive targeting effects of complex were assessed in KB tumor-bearing Balb/C mice through biodistribution studies. Synthesized bare SPIONs had low toxicity effect on healthy cells, but surface modification increased their biocompatibility. Moreover, KB cells viability was reduced when using folate conjugated SPIONs due to FR-mediated endocytosis, while having little effect on healthy cells (MFB). Moreover, this radiotracer had tolerable in vivo characteristics and tumor uptake. In the receptor blocked case, tumor uptake was decreased, indicating FR-specifi c uptake in tumor tissue while enhanced permeability and retention effect was major mechanism for tumor uptake.
Źródło:
Nukleonika; 2015, 60, No. 3, part 1; 497-502
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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