The FTIR spectrum analysis revealed that the REC bonded to the CaCO3 surface not only by physical absorption but also by a chemical reaction. The REC could change the surface properties of CaCO3, resulting in greater hydrophobicity of the surface and enhanced compatibility with nonpolar matrices. ...
3 FTIR spectra of gel-like (CaCO3)n oligomers. a, FTIR spectra showing the peak corresponding to the carbonate group in (CaCO3)n. b, The C–N bond in TEA. c, The N···H–O bond between TEA and protonated carbonate55. d, The spectra between 400 cm−1 and 4,000 cm−1 ...
Note that the calcite peaks at 712 and 874 cm−1 are missing from the spectrum of the carbonate globule from the grid sample. The same grid that yielded the characteristic ACC FTIR spectrum was also analysed by means of micro-focus XRD. A 2Θrange of 20 to 50° was selected ...
The crystal phase of R-CCNPs or F-CCNPs is also characterized by FTIR. As shown in Fig. 2b, there are strong absorption peaks at around 876 cm−1 and 714 cm−1, which demonstrates that both R-CCNPs and F-CCNPs were calcite [25], [26]. In the FTIR spectrum, the weak ...
In this paper, polylactide (PLA)/wood flour (WF)/calcium carbonate (CC) composites with different content of poly(maleic anhydride -co- vinyl acetate) (PMAVA) were prepared. PMAVA was obtained by radical solution polymerization and identified by FTIR. The torque - time curves showed that the...
V., Chakrabarty, D., and Mahapatra, S.: Insights into the formation of hydroxyl ions in calcium carbonate: temperature dependent FTIR and molecular modelling studies, J. Mater. Chem., 10,KURIYAVAR, S. I., VETRIVEL, R., HEGDE, S. G., RAMASWAMY, A. V., CHAKRABARTY, D. & MAHAPATRA,...
Fig.2 FTIR spectra of Calcium Carbonate-Silk Fibroin powder 2.3 X射线衍射 图3中,6 # 曲线为纯丝素蛋白的衍射曲线,可以 明显看出丝素蛋白在2θ=24°左右的β-折叠结构的衍 射峰。按照从5 # 到2 # 顺序可见,随CaCO3质量分数的 增大,β-折叠结构的衍射峰减弱直至消失。这可能是 当CaCO3含量较多时,CaCO...
Fig.2 FTIR spectra of Calcium Carbonate-Silk Fibroin powder 2.3 X射线衍射 图3中,6 # 曲线为纯丝素蛋白的衍射曲线,可以 明显看出丝素蛋白在2θ=24°左右的β-折叠结构的衍 射峰。按照从5 # 到2 # 顺序可见,随CaCO3质量分数的 增大,β-折叠结构的衍射峰减弱直至消失。这可能是 当CaCO3含量较多时,CaCO...
FTIR spectroscopy was also used for the characterization of synthetized calcium carbonate phases (Fig. 2g–k). Tapvsihebaferekaoatatbiuotstrneririsnbvaguetdtc7eab1dlca3tin otcedm2νs43−,ν41(02,Co5a0rOt. 78C347)C424− cscampmsey−−cm11tiranmundmeditcr...
www.nature.com/scientificreports OPEN A Chemical Template for Synthesis of Molecular Sheets of Calcium Carbonate received: 18 September 2015 accepted: 05 April 2016 Published: 05 May 2016 Ina Rianasari1,*, Farah Benyettou2,*, Sudhir Kumar Sharma1,*, Thomas Blanton3, Serdal ...