| 1 |
Positronium annihilation study of porosity in silica xerogels prepared by a sol-gel process
Wakabayashi Y, Ito K, Li HL, Ujihira Y, Kamitani K, Inoue H, Makishima A
Journal of the American Ceramic Society, 86(9), 1625, 2003 |
| 2 |
Correlation study between oxygen permeability and free volume of ethylene-vinyl alcohol copolymer through positronium lifetime measurement
Ito K, Saito Y, Yamamoto T, Ujihira Y, Nomura K
Macromolecules, 34(18), 6153, 2001 |
| 3 |
Microstructure analysis of polyacetal: Free-volume study by positronium lifetime measurement
Ito K, Nanasawa A, Tanimura N, Li HL, Ohkubo T, Ujihira Y, Nomura K
Materials Science Forum, 363-3, 313, 2001 |
| 4 |
Free-volume change during the volume phase transition of polyacrylamide gel studied by positron annihilation: Solvent-composition dependence
Ito K, Ujihira Y, Yamashita T, Horie K
Journal of Polymer Science Part B: Polymer Physics, 38(7), 922, 2000 |
| 5 |
Variation of size, numerical concentration and size distribution of free volume of heat shrink polyethylene prepared by electron irradiation cross-linkage with temperature probed by positron annihilation technique
Li HL, Ujihira Y, Shukushima S, Ueno K
Polymer, 41(1), 93, 2000 |
| 6 |
Free Volume of cis-1,4 polyisoprene/polybutadiene blends
Akiyama S, Kawahara S, Akiba I, Iio S, Li HL, Ujihira Y
Polymer Bulletin, 45(3), 275, 2000 |
| 7 |
Analysis of the sintering process of 2 mol % yttria-doped zirconia by positron annihilation lifetime measurements
Yagi Y, Hirano S, Ujihira Y, Miyayama M
Journal of Materials Science Letters, 18(3), 205, 1999 |
| 8 |
Extension of the equation for the annihilation lifetime of ortho-positronium at a cavity larger than 1 nm in radius
Ito K, Nakanishi H, Ujihira Y
Journal of Physical Chemistry B, 103(21), 4555, 1999 |
| 9 |
Free-volume change in volume phase transition of polyacrylamide gel as studied by positron annihilation: Salt dependence
Ito K, Ujihira Y, Yamashita T, Horie K
Journal of Polymer Science Part B: Polymer Physics, 37(18), 2634, 1999 |
| 10 |
Estimation of free volume in polystyrene-polyphenylene ether blend probed by the positron annihilation lifetime technique
Li HL, Ujihira Y, Nanasawa A, Jean YC
Polymer, 40(2), 349, 1999 |
