Abstract
The effect of a temperature perturbation at T 2 on the chain collapse process at T 1 < θ was studied for poly(methyl methacrylate)(M w) = 1.1 × 10 7) in the mixed solvent of tert-butyl alcohol + water(2.5vol%). The solution was quenched from θ to T 1 and preserved at the temperature for a period of t 1=300 min. Then the temperature was rapidly changed to T 2 and kept for t 2=1440 min. Finally the temperature was changed back to T 1. The chain collapse/expansion process was described by time evolution of expansion factor α 2, which was determined by static light scattering measurements. For T 2 < T 1, the collapse process at T 1 seemed not disturbed by the temperature perturbation at T 2 (memory effect). For T 2 > T 1, the collapse process at T 1 was accelerated or decelerated depending on T 2.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - Dec 1 2005 |
| Event | 54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: Sep 20 2005 → Sep 22 2005 |
Other
| Other | 54th SPSJ Symposium on Macromolecules |
|---|---|
| Country | Japan |
| City | Yamagata |
| Period | 9/20/05 → 9/22/05 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Memory effect in the collapse process of isolated polymer chains in a solution. / Maki, Yasuyuki; Sasaki, Naoki; Nakata, Mitsuo.
2005. Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan.Research output: Contribution to conference › Paper
}
TY - CONF
T1 - Memory effect in the collapse process of isolated polymer chains in a solution
AU - Maki, Yasuyuki
AU - Sasaki, Naoki
AU - Nakata, Mitsuo
PY - 2005/12/1
Y1 - 2005/12/1
N2 - The effect of a temperature perturbation at T 2 on the chain collapse process at T 1 < θ was studied for poly(methyl methacrylate)(M w) = 1.1 × 10 7) in the mixed solvent of tert-butyl alcohol + water(2.5vol%). The solution was quenched from θ to T 1 and preserved at the temperature for a period of t 1=300 min. Then the temperature was rapidly changed to T 2 and kept for t 2=1440 min. Finally the temperature was changed back to T 1. The chain collapse/expansion process was described by time evolution of expansion factor α 2, which was determined by static light scattering measurements. For T 2 < T 1, the collapse process at T 1 seemed not disturbed by the temperature perturbation at T 2 (memory effect). For T 2 > T 1, the collapse process at T 1 was accelerated or decelerated depending on T 2.
AB - The effect of a temperature perturbation at T 2 on the chain collapse process at T 1 < θ was studied for poly(methyl methacrylate)(M w) = 1.1 × 10 7) in the mixed solvent of tert-butyl alcohol + water(2.5vol%). The solution was quenched from θ to T 1 and preserved at the temperature for a period of t 1=300 min. Then the temperature was rapidly changed to T 2 and kept for t 2=1440 min. Finally the temperature was changed back to T 1. The chain collapse/expansion process was described by time evolution of expansion factor α 2, which was determined by static light scattering measurements. For T 2 < T 1, the collapse process at T 1 seemed not disturbed by the temperature perturbation at T 2 (memory effect). For T 2 > T 1, the collapse process at T 1 was accelerated or decelerated depending on T 2.
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M3 - Paper
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