Memory effect in the collapse process of isolated polymer chains in a solution

Yasuyuki Maki, Naoki Sasaki, Mitsuo Nakata

Research output: Contribution to conferencePaper

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 languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: Sep 20 2005Sep 22 2005

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period9/20/059/22/05

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Data storage equipment
Polymers
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Maki, Y., Sasaki, N., & Nakata, M. (2005). Memory effect in the collapse process of isolated polymer chains in a solution. Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan.

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 conferencePaper

Maki, Y, Sasaki, N & Nakata, M 2005, 'Memory effect in the collapse process of isolated polymer chains in a solution' Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan, 9/20/05 - 9/22/05, .
Maki Y, Sasaki N, Nakata M. Memory effect in the collapse process of isolated polymer chains in a solution. 2005. Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan.
Maki, Yasuyuki ; Sasaki, Naoki ; Nakata, Mitsuo. / Memory effect in the collapse process of isolated polymer chains in a solution. Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan.1 p.
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