Aggregation states of polystyrene at nonsolvent interfaces

Ayanobu Horinouchi, Norifumi L. Yamada, Keiji Tanaka

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The aggregation states of polystyrene (PS) thin films at interfaces with nonsolvents such as water, methanol, and hexane were examined by specular neutron reflectivity and sum-frequency generation vibrational spectroscopy. The density profiles of the PS thin films along the direction normal to the interface with water and methanol were comparable to that in air. However, this was not the case for the film in hexane exhibiting a diffuse interfacial layer due to swelling. Also, the local conformation of PS in the outermost region of the films was quite sensitive to the surrounding environment and consequently responded to a change in its environment. This was the case for typical nonsolvents such as water and methanol. The extent of the conformational change might be explained in terms of the interfacial energy.

Original languageEnglish
Pages (from-to)6565-6570
Number of pages6
JournalLangmuir
Volume30
Issue number22
DOIs
Publication statusPublished - Jun 10 2014

Fingerprint

Polystyrenes
Methanol
polystyrene
Agglomeration
methyl alcohol
Hexanes
Hexane
Water
water
Thin films
Vibrational spectroscopy
interfacial energy
thin films
Interfacial energy
swelling
Swelling
Conformations
Neutrons
reflectance
neutrons

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Aggregation states of polystyrene at nonsolvent interfaces. / Horinouchi, Ayanobu; Yamada, Norifumi L.; Tanaka, Keiji.

In: Langmuir, Vol. 30, No. 22, 10.06.2014, p. 6565-6570.

Research output: Contribution to journalArticle

Horinouchi, Ayanobu ; Yamada, Norifumi L. ; Tanaka, Keiji. / Aggregation states of polystyrene at nonsolvent interfaces. In: Langmuir. 2014 ; Vol. 30, No. 22. pp. 6565-6570.
@article{98d6dcd281b847de9ca79d63e21a4f6a,
title = "Aggregation states of polystyrene at nonsolvent interfaces",
abstract = "The aggregation states of polystyrene (PS) thin films at interfaces with nonsolvents such as water, methanol, and hexane were examined by specular neutron reflectivity and sum-frequency generation vibrational spectroscopy. The density profiles of the PS thin films along the direction normal to the interface with water and methanol were comparable to that in air. However, this was not the case for the film in hexane exhibiting a diffuse interfacial layer due to swelling. Also, the local conformation of PS in the outermost region of the films was quite sensitive to the surrounding environment and consequently responded to a change in its environment. This was the case for typical nonsolvents such as water and methanol. The extent of the conformational change might be explained in terms of the interfacial energy.",
author = "Ayanobu Horinouchi and Yamada, {Norifumi L.} and Keiji Tanaka",
year = "2014",
month = "6",
day = "10",
doi = "10.1021/la500829p",
language = "English",
volume = "30",
pages = "6565--6570",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "22",

}

TY - JOUR

T1 - Aggregation states of polystyrene at nonsolvent interfaces

AU - Horinouchi, Ayanobu

AU - Yamada, Norifumi L.

AU - Tanaka, Keiji

PY - 2014/6/10

Y1 - 2014/6/10

N2 - The aggregation states of polystyrene (PS) thin films at interfaces with nonsolvents such as water, methanol, and hexane were examined by specular neutron reflectivity and sum-frequency generation vibrational spectroscopy. The density profiles of the PS thin films along the direction normal to the interface with water and methanol were comparable to that in air. However, this was not the case for the film in hexane exhibiting a diffuse interfacial layer due to swelling. Also, the local conformation of PS in the outermost region of the films was quite sensitive to the surrounding environment and consequently responded to a change in its environment. This was the case for typical nonsolvents such as water and methanol. The extent of the conformational change might be explained in terms of the interfacial energy.

AB - The aggregation states of polystyrene (PS) thin films at interfaces with nonsolvents such as water, methanol, and hexane were examined by specular neutron reflectivity and sum-frequency generation vibrational spectroscopy. The density profiles of the PS thin films along the direction normal to the interface with water and methanol were comparable to that in air. However, this was not the case for the film in hexane exhibiting a diffuse interfacial layer due to swelling. Also, the local conformation of PS in the outermost region of the films was quite sensitive to the surrounding environment and consequently responded to a change in its environment. This was the case for typical nonsolvents such as water and methanol. The extent of the conformational change might be explained in terms of the interfacial energy.

UR - http://www.scopus.com/inward/record.url?scp=84902204204&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84902204204&partnerID=8YFLogxK

U2 - 10.1021/la500829p

DO - 10.1021/la500829p

M3 - Article

VL - 30

SP - 6565

EP - 6570

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 22

ER -