Observation of concentration fluctuations in polymer gels performed by neutron spin echo

Satoshi Koizumi; Michael Monkenbusch; Dieter Richter; Dietmar Schwahn; Bela Farago; Masahiko Annaka

doi:10.1080/1023816021000020671

Observation of concentration fluctuations in polymer gels performed by neutron spin echo

Satoshi Koizumi, Michael Monkenbusch, Dieter Richter, Dietmar Schwahn, Bela Farago, Masahiko Annaka

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We applied these methods of small-angle neutron scattering (SANS) and neutron spin echo (NSE) on a swollen poly (N-isopropyl acrylamide) (NIPA) gel in order to observe the elastic scattering of frozen concentration fluctuations due to crosslinks. We successfully obtained the structure factor for the frozen concentration fluctuations in a q-domain of q > 0: 01 A^-1; while in a q-domain of q < 0: 01 A^-1; this attempt failed due to the limited performance of the q-resolution and the Fourier time tF of the current specifications of the NSE spectrometers. This technical hurdle for the spectrometer should be overcome on an intensified neutron source for the next generation, realizing t_F of µs-order and the q-resolution down closer to 0: 001 A^-1.

Original language	English
Pages (from-to)	155-162
Number of pages	8
Journal	Journal of Neutron Research
Volume	10
Issue number	3-4
DOIs	https://doi.org/10.1080/1023816021000020671
Publication status	Published - 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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10.1080/1023816021000020671

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title = "Observation of concentration fluctuations in polymer gels performed by neutron spin echo",

abstract = "We applied these methods of small-angle neutron scattering (SANS) and neutron spin echo (NSE) on a swollen poly (N-isopropyl acrylamide) (NIPA) gel in order to observe the elastic scattering of frozen concentration fluctuations due to crosslinks. We successfully obtained the structure factor for the frozen concentration fluctuations in a q-domain of q > 0: 01 A-1; while in a q-domain of q < 0: 01 A-1; this attempt failed due to the limited performance of the q-resolution and the Fourier time tF of the current specifications of the NSE spectrometers. This technical hurdle for the spectrometer should be overcome on an intensified neutron source for the next generation, realizing tF of µs-order and the q-resolution down closer to 0: 001 A-1.",

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T1 - Observation of concentration fluctuations in polymer gels performed by neutron spin echo

AU - Koizumi, Satoshi

AU - Monkenbusch, Michael

AU - Richter, Dieter

AU - Schwahn, Dietmar

AU - Farago, Bela

AU - Annaka, Masahiko

PY - 2002

Y1 - 2002

N2 - We applied these methods of small-angle neutron scattering (SANS) and neutron spin echo (NSE) on a swollen poly (N-isopropyl acrylamide) (NIPA) gel in order to observe the elastic scattering of frozen concentration fluctuations due to crosslinks. We successfully obtained the structure factor for the frozen concentration fluctuations in a q-domain of q > 0: 01 A-1; while in a q-domain of q < 0: 01 A-1; this attempt failed due to the limited performance of the q-resolution and the Fourier time tF of the current specifications of the NSE spectrometers. This technical hurdle for the spectrometer should be overcome on an intensified neutron source for the next generation, realizing tF of µs-order and the q-resolution down closer to 0: 001 A-1.

AB - We applied these methods of small-angle neutron scattering (SANS) and neutron spin echo (NSE) on a swollen poly (N-isopropyl acrylamide) (NIPA) gel in order to observe the elastic scattering of frozen concentration fluctuations due to crosslinks. We successfully obtained the structure factor for the frozen concentration fluctuations in a q-domain of q > 0: 01 A-1; while in a q-domain of q < 0: 01 A-1; this attempt failed due to the limited performance of the q-resolution and the Fourier time tF of the current specifications of the NSE spectrometers. This technical hurdle for the spectrometer should be overcome on an intensified neutron source for the next generation, realizing tF of µs-order and the q-resolution down closer to 0: 001 A-1.

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Observation of concentration fluctuations in polymer gels performed by neutron spin echo

Abstract

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