In this study, attenuated total reflectance Fourier transform infrared (ATR-FTIR) was used to compare the amount of crystalline nifedipine formed in different formula of poly(ethylene glycol) (PEG)–nifedipine solid dispersions when exposed at various relative humidities (RHs) for 2 h at 40°C....
View entire compound with spectra: 5 NMR, 11 FTIR, 1 Raman, 8 MS (GC), and 2 Near IR SpectraBase Compound ID Erd25OtscYS InChI InChI=1S/C10H14O4/c1-7(2)9(11)13-5-6-14-10(12)8(3)4/h1,3,5-6H2,2,4H3 InChIKey STVZJERGLQHEKB-UHFFFAOYSA-N Google Search Mol Weight ...
关键词:多壁碳纳米管;气相色谱;溶胶-凝胶中图分类号:O657.7+1文献标识码:A文章编号:1001-7119(2014)01-0018-06Poly(ethyleneglycol)GraftedMulti-WalledCarbonNanotubesBySol-GelUsedasStationaryPhaseinGCZhengYongjie,SunChe,TianJingzhi(CollegeofChemistryandChemicalEngineering,QiqiharUniversity,Qiqihar161006,China)...
Fig. 2. 1H-NMR spectrum of cyclooctene-PEG(750) macromonomer. Fig. 3 is the FTIR spectrum of PCOE-g-PEG copolymer. The characteristic absorption bands of CO groups in PEG graft chain at 1110 cm− 1 and the stretching bands at about 2925 cm− 1 and 2854 cm− 1 corresponding to ...
·5H2O), ascorbic acid (AA), sodium hydroxide (NaOH), potassium hydroxide (KOH), sodium chloride (NaCl), ethanol (>99.7%), isopropanol (>99.7%), diethanolamine (DEA > 99%), ethylene glycol (EG > 99%) were purchased from Macklin. Polyvinylpyrrolidone (PVP, K29-K32) and ...
The calculated absorption spectra of the models are qualitatively in good agreement with the experimental FTIR spectrum of silicalite-1. Additionally we simulate the FTIR spectrum of the isolated ethylene molecule and that of an ethylene molecule in interaction with the above-mentioned zeolite models. ...
The NMR spectrum in Fig. 2(a) showed successful synthesis of βCD-(PNIPAAm)4 star polymer via ATRP. By comparing the integrations of the Conclusions The thermoresponsive micellar drug delivery system formed by a non-covalently connected supramolecular block copolymer was developed to circumvent MDR...
Malysheva, L., Onipko, A., Valiokas, R. & Liedberg, B. First-principle DFT and MP2 modeling of infrared reflection–absorption spectra of oriented helical ethylene glycol oligomers.J. Phys. Chem. B109, 13221–13227 (2005). ArticleGoogle Scholar ...
UV radiation ranging from 200 to 400 nm represents only 6% of the total intensity of the solar spectrum on the surface of the earth. However, the energy of radiation in this range is of the same order of magnitude as the energy of a chemical bond. Photodegradation induced by these rays ...
In situ FTIR spectroscopic studies of ethylene glycol electrooxidation on Pd electrode in alkaline solution: The effects of concentration. Journal of Electroanalytical Chemistry 688, 165-171 (2013).Jian-Long Lin,Jie Ren,Na Tian,Zhi-You Zhou,Shi-Gang Sun.In situ FTIR spectroscopic studies of ...