Abstract
Recently, polymeric materials nave oeen widely used in applications sucn as medical materiais, in tnese applications, the surrace comes into contact with a different phase. Thus, their interfaces should be studied, both their structures as well as their dynamics. The density profiles of a perdeuterated poly(methyl methacrylate) (dPMMA) film in water, hexane, methanol, ethanol, 1-propanol, and 1-butanol were examined along the direction normal to the interface by neutron reflectivity (NR). Although these liquids are typical non-solvents for dPMMA, the liquid/polymer interfaces were diffuse in comparison with the air/polymer interface probably due to the partial dissolution of polymer segments at the outermost region of the film. Interestingly, in water, an anomalous swollen layer was formed beneath the diffused interface. On the other hand, such a swollen layer was not observed for the dPMMA films in alcohols. This is simply because alcohol molecules deeply penetrated into the films. The amounts of the alcohols penetrated are related to the interaction parameter. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film.
| Original language | English |
|---|---|
| Pages (from-to) | 608-615 |
| Number of pages | 8 |
| Journal | KOBUNSHI RONBUNSHU |
| Volume | 68 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1 2011 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Environmental Science(all)
- Polymers and Plastics
Cite this
Density distributions of poly (methyl methacrylate) thin films in non-solvents. / Atarashi, Hironori; Fujii, Yoshihisa; Yamazaki, Dai; Hino, Masahiro; Morita, Hiroshi; Tanaka, Keiji.
In: KOBUNSHI RONBUNSHU, Vol. 68, No. 9, 01.09.2011, p. 608-615.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Density distributions of poly (methyl methacrylate) thin films in non-solvents
AU - Atarashi, Hironori
AU - Fujii, Yoshihisa
AU - Yamazaki, Dai
AU - Hino, Masahiro
AU - Morita, Hiroshi
AU - Tanaka, Keiji
PY - 2011/9/1
Y1 - 2011/9/1
N2 - Recently, polymeric materials nave oeen widely used in applications sucn as medical materiais, in tnese applications, the surrace comes into contact with a different phase. Thus, their interfaces should be studied, both their structures as well as their dynamics. The density profiles of a perdeuterated poly(methyl methacrylate) (dPMMA) film in water, hexane, methanol, ethanol, 1-propanol, and 1-butanol were examined along the direction normal to the interface by neutron reflectivity (NR). Although these liquids are typical non-solvents for dPMMA, the liquid/polymer interfaces were diffuse in comparison with the air/polymer interface probably due to the partial dissolution of polymer segments at the outermost region of the film. Interestingly, in water, an anomalous swollen layer was formed beneath the diffused interface. On the other hand, such a swollen layer was not observed for the dPMMA films in alcohols. This is simply because alcohol molecules deeply penetrated into the films. The amounts of the alcohols penetrated are related to the interaction parameter. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film.
AB - Recently, polymeric materials nave oeen widely used in applications sucn as medical materiais, in tnese applications, the surrace comes into contact with a different phase. Thus, their interfaces should be studied, both their structures as well as their dynamics. The density profiles of a perdeuterated poly(methyl methacrylate) (dPMMA) film in water, hexane, methanol, ethanol, 1-propanol, and 1-butanol were examined along the direction normal to the interface by neutron reflectivity (NR). Although these liquids are typical non-solvents for dPMMA, the liquid/polymer interfaces were diffuse in comparison with the air/polymer interface probably due to the partial dissolution of polymer segments at the outermost region of the film. Interestingly, in water, an anomalous swollen layer was formed beneath the diffused interface. On the other hand, such a swollen layer was not observed for the dPMMA films in alcohols. This is simply because alcohol molecules deeply penetrated into the films. The amounts of the alcohols penetrated are related to the interaction parameter. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film.
UR - http://www.scopus.com/inward/record.url?scp=80054898246&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054898246&partnerID=8YFLogxK
U2 - 10.1295/koron.68.608
DO - 10.1295/koron.68.608
M3 - Review article
AN - SCOPUS:80054898246
VL - 68
SP - 608
EP - 615
JO - Kobunshi Ronbunshu
JF - Kobunshi Ronbunshu
SN - 0386-2186
IS - 9
ER -