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 the Full Spectrum for FREE! The full spectrum can only be viewed using a FREE account.SpectraBase Spectrum ID 8tz7cjOaOfA Name ETHYLENE GLYCOL, DIMETHACRYLATE Source of Sample Sartomer Resins, Inc., Essington, Pennsylvania Boiling Point 83-85C/1mm ...
In this research with different molecular weights (2000–6000 g/mol) of methoxy poly(ethylene glycol)(MePEG), a series of MePEG-bile (MePB) conjugates were generated by an economical and simple method and confirmed by FTIR and 1H-NMR spectrum. The properties in aqueous solution were studied...
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 ...
FTIR Fourier Transform Infrared Spectroscopy GA glutaraldehyde GlcN 2-amino-2-deoxy-β-d-glucopyranosyl GlcNAc 2-acetamido-2-deoxy-β-d-glucopyranosyl LEV levofloxacin LPS lipopolysaccharide MeO-PEG-g-CS methoxy poly(ethylene glycol) acid grafted chitosan mPEG-g-CS methoxy poly(ethylene glycol)-grafte...
·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 ...
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 ...
and interpretation of functional groups in the FTIR spectrum indicated the presence of cellulose polymer, ethylene-propylene copolymer, neoprene, and polyester... S Suparno,D Deswati,WE Fitri,... - 《Environment & Natural Resources Journal》 被引量: 0发表: 2024年 Impact of 1-Methylcyclopropene...
聚乙二醇接枝多壁碳纳米管毛细管气相色谱柱 的制备研究与应用 郑永杰,孙澈,田景芝 (齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006) 摘要:本研究采用“向碳纳米管接枝”方法将聚乙二醇(PEG)接枝到多壁碳纳米(MWCNTs)的表面,合成PEG修饰的多壁碳纳米管(PEG-g-MWCNTs)。通过FTIR,TEM,TGA,XPS等手段表征了接枝前后 产...
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...