Interdiffusion of cyclic polystyrene whose molecular weight is larger than the critical entanglement molecular weight

Daisuke Kawaguchi; Atsushi Takano; Yushu Matsushita; Keiji Tanaka; Toshihiko Nagamura; Naoya Torikai

doi:10.1678/rheology.36.113

Interdiffusion of cyclic polystyrene whose molecular weight is larger than the critical entanglement molecular weight

Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita, Keiji Tanaka, Toshihiko Nagamura, Naoya Torikai

Applied Fine Chemistry

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

5 Citations (Scopus)

Abstract

Interdiffusion of cyclic polystyrene (c-hPS) / cyclic deuterated polystyrene (c-dPS) laminated film whose molecular weights are ca.50 k was examined by neutron reflectivity and dynamic secondary ion mass spectroscopy. It has been found that time evolution of the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are similar to those of the corresponding linear hPS/linear dPS (l-hPS/l-dPS) bilayer films at short time region. However, at the annealing time longer than 5×10³ s, the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are evidently larger than those of the (l-hPS/l-dPS) films at each observing time. These results can be explained in terms of the less entanglement nature of cyclic polymers than that of the linear ones.

Original language	English
Pages (from-to)	113-115
Number of pages	3
Journal	Nihon Reoroji Gakkaishi
Volume	36
Issue number	2
DOIs	https://doi.org/10.1678/rheology.36.113
Publication status	Published - Jul 14 2008

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Interdiffusion of cyclic polystyrene whose molecular weight is larger than the critical entanglement molecular weight",

abstract = "Interdiffusion of cyclic polystyrene (c-hPS) / cyclic deuterated polystyrene (c-dPS) laminated film whose molecular weights are ca.50 k was examined by neutron reflectivity and dynamic secondary ion mass spectroscopy. It has been found that time evolution of the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are similar to those of the corresponding linear hPS/linear dPS (l-hPS/l-dPS) bilayer films at short time region. However, at the annealing time longer than 5×103 s, the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are evidently larger than those of the (l-hPS/l-dPS) films at each observing time. These results can be explained in terms of the less entanglement nature of cyclic polymers than that of the linear ones.",

author = "Daisuke Kawaguchi and Atsushi Takano and Yushu Matsushita and Keiji Tanaka and Toshihiko Nagamura and Naoya Torikai",

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AU - Kawaguchi, Daisuke

AU - Takano, Atsushi

AU - Matsushita, Yushu

AU - Tanaka, Keiji

AU - Nagamura, Toshihiko

AU - Torikai, Naoya

PY - 2008/7/14

Y1 - 2008/7/14

N2 - Interdiffusion of cyclic polystyrene (c-hPS) / cyclic deuterated polystyrene (c-dPS) laminated film whose molecular weights are ca.50 k was examined by neutron reflectivity and dynamic secondary ion mass spectroscopy. It has been found that time evolution of the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are similar to those of the corresponding linear hPS/linear dPS (l-hPS/l-dPS) bilayer films at short time region. However, at the annealing time longer than 5×103 s, the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are evidently larger than those of the (l-hPS/l-dPS) films at each observing time. These results can be explained in terms of the less entanglement nature of cyclic polymers than that of the linear ones.

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