Abstract
Inorganic-organic hybrid membranes consisting of an aliphatic backbone and amorphous TiO 2 nanoparticles (NPs) were synthesized from tetraallyloxytitanium and phosphonic acid methacrylate via a simple copolymerization-hydrolysis method. Tetraallyoxytitanium (TAT) was copolymerized with 2-hydroxyethyl methacrylate acid phosphate (HEMAP), and then hydrolyzed, yielding inorganic-organic hybrid composites. IR and 13 C NMR spectroscopy confirmed the formation of the inorganic-organic hybrid structure. TEM and SAXS showed that amorphous TiO 2 NPs were dispersed in the polymer matrix. The membranes exhibited good thermal stability up to 180 °C. The aliphatic chains of the methacrylate derivative dispersed with TiO 2 NPs improved the mechanical properties of the membranes. The tensile modulus of the HEMAP/TAT membrane with a composition of 95:5 was 505 MPa. The conductivity of the 95:5 membranes was 4.1 × 10 -2 S cm -1 at 130 °C and 100% relative humidity (RH), while it was 4.7 × 10 -4 S cm -1 at 130 °C and 19.3% RH. The peak power of the 95:5 membrane was 4.8 mW/cm 2 at 140 °C and 30% RH. The cell utilizing the hybrid membrane was operated at 140 °C and 30% RH for 72 h without any drop in cell voltage.
| Original language | English |
|---|---|
| Pages (from-to) | 221-228 |
| Number of pages | 8 |
| Journal | Journal of Membrane Science |
| Volume | 563 |
| DOIs | |
| Publication status | Published - Oct 1 2018 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
Synthesis of titania nanoparticle-dispersed hybrid membranes from allyloxytitanium and phosphonic acid derivatives for fuel cell. / Ozawa, Naoya; Hayashi, Koichiro; Sakamoto, Wataru; Yogo, Toshinobu.
In: Journal of Membrane Science, Vol. 563, 01.10.2018, p. 221-228.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis of titania nanoparticle-dispersed hybrid membranes from allyloxytitanium and phosphonic acid derivatives for fuel cell
AU - Ozawa, Naoya
AU - Hayashi, Koichiro
AU - Sakamoto, Wataru
AU - Yogo, Toshinobu
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Inorganic-organic hybrid membranes consisting of an aliphatic backbone and amorphous TiO 2 nanoparticles (NPs) were synthesized from tetraallyloxytitanium and phosphonic acid methacrylate via a simple copolymerization-hydrolysis method. Tetraallyoxytitanium (TAT) was copolymerized with 2-hydroxyethyl methacrylate acid phosphate (HEMAP), and then hydrolyzed, yielding inorganic-organic hybrid composites. IR and 13 C NMR spectroscopy confirmed the formation of the inorganic-organic hybrid structure. TEM and SAXS showed that amorphous TiO 2 NPs were dispersed in the polymer matrix. The membranes exhibited good thermal stability up to 180 °C. The aliphatic chains of the methacrylate derivative dispersed with TiO 2 NPs improved the mechanical properties of the membranes. The tensile modulus of the HEMAP/TAT membrane with a composition of 95:5 was 505 MPa. The conductivity of the 95:5 membranes was 4.1 × 10 -2 S cm -1 at 130 °C and 100% relative humidity (RH), while it was 4.7 × 10 -4 S cm -1 at 130 °C and 19.3% RH. The peak power of the 95:5 membrane was 4.8 mW/cm 2 at 140 °C and 30% RH. The cell utilizing the hybrid membrane was operated at 140 °C and 30% RH for 72 h without any drop in cell voltage.
AB - Inorganic-organic hybrid membranes consisting of an aliphatic backbone and amorphous TiO 2 nanoparticles (NPs) were synthesized from tetraallyloxytitanium and phosphonic acid methacrylate via a simple copolymerization-hydrolysis method. Tetraallyoxytitanium (TAT) was copolymerized with 2-hydroxyethyl methacrylate acid phosphate (HEMAP), and then hydrolyzed, yielding inorganic-organic hybrid composites. IR and 13 C NMR spectroscopy confirmed the formation of the inorganic-organic hybrid structure. TEM and SAXS showed that amorphous TiO 2 NPs were dispersed in the polymer matrix. The membranes exhibited good thermal stability up to 180 °C. The aliphatic chains of the methacrylate derivative dispersed with TiO 2 NPs improved the mechanical properties of the membranes. The tensile modulus of the HEMAP/TAT membrane with a composition of 95:5 was 505 MPa. The conductivity of the 95:5 membranes was 4.1 × 10 -2 S cm -1 at 130 °C and 100% relative humidity (RH), while it was 4.7 × 10 -4 S cm -1 at 130 °C and 19.3% RH. The peak power of the 95:5 membrane was 4.8 mW/cm 2 at 140 °C and 30% RH. The cell utilizing the hybrid membrane was operated at 140 °C and 30% RH for 72 h without any drop in cell voltage.
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U2 - 10.1016/j.memsci.2018.05.072
DO - 10.1016/j.memsci.2018.05.072
M3 - Article
VL - 563
SP - 221
EP - 228
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -