IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE
Special Issue: In Memory of Prof. Bingzheng Jiang|Updated:2023-01-03
|
IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE
IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE
Chinese Journal of Polymer Science2013年31卷第9期 页码:1321-1328
Affiliations:
a.School of Material Science & Engineering, Shandong Polytechnic University, Jinan 250353, China
b.School of Material Science & Engineering, Tianjin University, Tianjin 300072, China
c.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Author bio:
**Cong-de Qiao (乔从德), E-mail: cdqiao@spu.edu.cn
Funds:
National Natural Science Foundation of China for General(50303017;50373044);Major(20490220;50390090);Special Funds for Major State Basic Research Projects(2003CB615600)
Cong-de Qiao, Shi-chun Jiang, Xiang-ling Ji, 等. IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE[J]. Chinese Journal of Polymer Science, 2013,31(9):1321-1328. DOI: 10.1007/s10118-013-1333-5.
Cong-de Qiao, Shi-chun Jiang, Xiang-ling Ji, et al. IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE[J]. Chinese Journal of Polymer Science, 2013, 31(9): 1321-1328. DOI: 10.1007/s10118-013-1333-5.
Cong-de Qiao, Shi-chun Jiang, Xiang-ling Ji, 等. IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE[J]. Chinese Journal of Polymer Science, 2013,31(9):1321-1328. DOI: 10.1007/s10118-013-1333-5.DOI:
Cong-de Qiao, Shi-chun Jiang, Xiang-ling Ji, et al. IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE[J]. Chinese Journal of Polymer Science, 2013, 31(9): 1321-1328. DOI: 10.1007/s10118-013-1333-5.DOI:
IN SITU OBSERVATION OF MELTING AND CRYSTALLIZATION BEHAVIORS OF POLY(ε-CAPROLACTONE) ULTRA-THIN FILMS BY AFM TECHNIQUE
The melting and crystallization behaviors of poly(
ε
-caprolactone) (PCL) ultra-thin films with thickness from 15 nm to 8 nm were studied by AFM technique equipped with a hot-stage in real-time. It was found that melting can erase the spherulitic structure for polymer film with high thickness. However
annealing above the melting point can not completely erase the tree-like structure for the thinner polymer film. Generally
the structure formation of thin polymer films of PCL is controlled not only by melting and crystallization but also by dewetting during thermal annealing procedures
and dewetting predominates in the structure formation of ultra-thin films. However
the presence of tree-like morphology at 75℃ may be due to the strong interaction between PCL and mica surface
which may stick the PCL chains onto the mica surface during thermal annealing process. Moreover
the growth of the dendrites was investigated and it was found that crystallization is followed from a dewetted sample
and the branches did not grow with the stems. The crystallization of polymer in the ultrathin films is a diffusion-controlled process. Both melting and crystallization behaviors of PCL in thin films are influenced by film thickness.
关键词
Keywords
references
The trial reading is over, you can activate your VIP account to continue reading.