Size dependence of transition temperature in polymer nanowires

被引：16

作者：

Nakanishi, Sana ^{[1
]}

Yoshikawa, Hirofumi ^{[1
]}

Shoji, Satoru ^{[1
]}

Sekkat, Zouheir ^{[1
,2
,4
]}

Kawata, Satoshi ^{[1
,3
]}

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 565, Japan

[2] Al Akhawayn Univ, Sch Sci & Engn, Irfane 53000, Morocco

[3] RIKEN, Nanophoton Lab, Wako, Saitama, Japan

[4] Hassan II Acad Sci & Technol, Rabat, Morocco

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 12期

关键词：

D O I：

10.1021/jp800453p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We studied the effect of changing temperature on the mechanical properties of nanosized poly(methyl methacrylate) wires fabricated by two-photon fabrication. At around room temperature, the nanowires showed a transition temperature where the shear modulus suddenly changed. This transition temperature was observed to decrease more than 40 K by decreasing the radius of the nanowires from 450 to 150 nm. This size is several times larger in nanowires than reported values of polymer thin film thickness showing a depression of the glass transition temperature.

引用

页码：3586 / 3589

页数：4

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