WebSep 9, 2015 · The stability of shellac was investigated using insoluble solid test, Fourier Transform Infra Red (FTIR), Thermogravimetry Analyzer (TGA), and Water Vapour … WebATR-FT-IR spectra of conservation-related materials in the MID-IR and FAR-IR region
Figure 2. FTIR spectra of PEG400 shellac system with different...
WebNov 1, 2024 · Then, the molten mass was spread in the form of a thin sheet by using a stream heated roller. The final product shellac, having the glass transition temperature as … WebAug 28, 2024 · Shellac (SL) is a natural resin employed for wood finishing, while clove (Eugenia caryophyllata) and thyme (Satureja hortensis) essential oils (C-EO, T-EO) are organic natural products of vegetal origin with antifungal, antimicrobial and antioxidant properties. The present paper aims at exploring the potential of modifying alcoholic … most venomous rattlesnake in the world
Investigating Shellac: Documenting the Process, Defining the ... - UiO
WebThe objective of this study was to improve the properties of shellac by composite salts formation. The shellac samples were prepared in various salt forms by dissolving them … The structure of shellac contains of aleuritic acid part and terpenic acid part [28]. The C, H and N content analysis shows the % of C and H as 28.3, 16.5, respectively. On the other hand, Sh–HPMC–AA shows %C: 50.1, %H: 21.5, respectively, indicating increase in percentage of carbon as a result of chemical … See more Thermo-gravimetric analysis (TGA) is useful for study of thermal stability and degradation of materials for various practical applications. Figure 2 shows the … See more The differential scanning calorimetry (DSC) is also used to study the thermal behavior of material. DSC thermograms for shellac and chemically modified shellac … See more The morphological feature of the shellac and Sh–HPMC–AA, obtained from scanning electron micrograph (SEM), is presented in Fig. 7. All materials were … See more The equilibrium swelling % for Sh–HPMC–AA, carried out as a function of pH, is illustrated in Fig. 8. The result indicated that the swelling ratio was 288% for … See more WebApr 30, 2011 · The formation of SHL–PHT was confirmed by FTIR spectra and other characterization techniques. The SHL–PHT demonstrated to improve the thermal stability … minimum income to file tax return for student