TY - JOUR
T1 - Influence of crystallization on molecular dynamics of the amorphous phase in poly(ε-caprolactone) and poly(ε-caprolactone)/LiClO4 complexes investigated by dielectric relaxation spectroscopy
AU - Zhang, Yao
AU - Zhang, Zhijie
AU - Li, Hongfei
AU - Yu, Donghong
AU - Shang, Yingrui
AU - An, Lijia
AU - Jiang, Shichun
PY - 2013/12/1
Y1 - 2013/12/1
N2 - The dielectric relaxation spectroscopy results indicate that the relaxation peak of PCL for pure PCL and PCL/LiClO4 complexes shifts to a lower frequency with increasing crystallization temperature, while the amorphous, condensed structure of PCL for pure PCL and PCL/LiClO4 complexes is slightly affected by crystallization temperature. These findings were obtained from small-angle X-ray scattering (SAXS) measurements. To further understand the effect of crystallization temperature on the relaxation behavior of PCL and PCL/LiClO4 complexes, the isothermal crystallization process of PCL and PCL/LiClO4 was probed in situ by dielectric spectra measurement. The analysis indicated that the relaxation dynamics for pure PCL and PCL/LiClO4 complexes decrease continuously during the isothermal crystallization process, even at the crystallization induction period. This paper presents a detailed discussion of the crystallization mechanisms of the PCL and PCL/LiClO4 complexes, and the probable explanation as to the effect of crystallization temperature on the relaxation dynamics of PCL and PCL/LiClO4 .
AB - The dielectric relaxation spectroscopy results indicate that the relaxation peak of PCL for pure PCL and PCL/LiClO4 complexes shifts to a lower frequency with increasing crystallization temperature, while the amorphous, condensed structure of PCL for pure PCL and PCL/LiClO4 complexes is slightly affected by crystallization temperature. These findings were obtained from small-angle X-ray scattering (SAXS) measurements. To further understand the effect of crystallization temperature on the relaxation behavior of PCL and PCL/LiClO4 complexes, the isothermal crystallization process of PCL and PCL/LiClO4 was probed in situ by dielectric spectra measurement. The analysis indicated that the relaxation dynamics for pure PCL and PCL/LiClO4 complexes decrease continuously during the isothermal crystallization process, even at the crystallization induction period. This paper presents a detailed discussion of the crystallization mechanisms of the PCL and PCL/LiClO4 complexes, and the probable explanation as to the effect of crystallization temperature on the relaxation dynamics of PCL and PCL/LiClO4 .
KW - Crystallizationmechanism
KW - Dielectric relaxation spectroscopy
KW - PCL/LiClO complexes
U2 - 10.1007/s10965-013-0312-4
DO - 10.1007/s10965-013-0312-4
M3 - Journal article
AN - SCOPUS:84888267350
SN - 1022-9760
VL - 20
JO - Journal of Polymer Research
JF - Journal of Polymer Research
IS - 12
M1 - 312
ER -