TY - JOUR
T1 - Effect of cationic surfactants on characteristics and colorimetric behavior of polydiacetylene/silica nanocomposite as time-temperature indicator
AU - Nopwinyuwong, Atchareeya
AU - Kitaoka, Takuya
AU - Boonsupthip, Waraporn
AU - Pechyen, Chiravoot
AU - Suppakul, Panuwat
N1 - Funding Information:
This work was funded by Center for Advanced Studies in Agriculture and Food, Institute for Advanced Studies, Kasetsart University under control of the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission.
PY - 2014/9/30
Y1 - 2014/9/30
N2 - Polydiacetylene (PDA)/silica nanocomposites were synthesized by self-assembly method using polymerizable amphiphilic diacetylene monomers, 10,12-pentacosadiynoic acid (PCDA). Addition of cationic surfactants (PDADMAC and CTAB) to PDA/SiO 2 nanocomposites induced higher intermolecular force which affected their size, shape and color transition. Pure PDA, PDA/SiO 2 , PDA/SiO 2 /PDADMAC and PDA/SiO 2 /CTAB were investigated by particle size analysis, TEM, SEM, UV-vis spectroscopy and FT-IR. It was found that the PDA/SiO 2 nanocomposites exhibited slightly larger particle sizes than those of other samples. The PDA/SiO 2 nanocomposites with a core-shell structure were almost regarded as spherical-shaped particles. Cationic surfactants, especially CTAB, presumably affected the particle size and shape of PDA/SiO 2 nanocomposites due to the disruption of hydrogen bonding between PDA head group and ammonium group. The colorimetric response of both PDA/SiO 2 /surfactant and surfactant-free PDA/SiO 2 aqueous solutions directly changed in relation to time and temperature; thus they were expected to be applied as a new polymer-based time-temperature indicator (TTI).
AB - Polydiacetylene (PDA)/silica nanocomposites were synthesized by self-assembly method using polymerizable amphiphilic diacetylene monomers, 10,12-pentacosadiynoic acid (PCDA). Addition of cationic surfactants (PDADMAC and CTAB) to PDA/SiO 2 nanocomposites induced higher intermolecular force which affected their size, shape and color transition. Pure PDA, PDA/SiO 2 , PDA/SiO 2 /PDADMAC and PDA/SiO 2 /CTAB were investigated by particle size analysis, TEM, SEM, UV-vis spectroscopy and FT-IR. It was found that the PDA/SiO 2 nanocomposites exhibited slightly larger particle sizes than those of other samples. The PDA/SiO 2 nanocomposites with a core-shell structure were almost regarded as spherical-shaped particles. Cationic surfactants, especially CTAB, presumably affected the particle size and shape of PDA/SiO 2 nanocomposites due to the disruption of hydrogen bonding between PDA head group and ammonium group. The colorimetric response of both PDA/SiO 2 /surfactant and surfactant-free PDA/SiO 2 aqueous solutions directly changed in relation to time and temperature; thus they were expected to be applied as a new polymer-based time-temperature indicator (TTI).
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U2 - 10.1016/j.apsusc.2014.07.013
DO - 10.1016/j.apsusc.2014.07.013
M3 - Article
AN - SCOPUS:84906701738
SN - 0169-4332
VL - 314
SP - 426
EP - 432
JO - Applied Surface Science
JF - Applied Surface Science
ER -