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
收藏
页码：3586 / 3589
页数：4
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