Phase Selection Pathways in Ultrathin Film Crystallization of a Low Molecular Weight Poly(ethylene oxide) Fraction on Mica Surfaces
Phase Selection Pathways in Ultrathin Film Crystallization of a Low Molecular Weight Poly(ethylene oxide) Fraction on Mica Surfaces
复制标题
云母表面低分子量聚环氧乙烷组分超薄膜结晶的相选择途径
DOI:
10.1021/ma201885g
复制
发表时间:
2011-10
期刊:
影响因子:
5.5
通讯作者:
Chen, Er-Qiang
中科院分区:
文献类型:
--
作者:
Liu, Yi-Xin;Zhong, Lu-Wei;Su, Shi-Zhao;Chen, Er-Qiang
Utilizing in situ atomic force microscopy, we monitored the phase selection pathways of ultrathin film crystallization of a low molecular weight poly(ethylene oxide) fraction with two hydroxyl end groups and a number-average molecular weight of 3000 g/mol (HPEO3k) on mica surfaces. The sample forms integral folded chain (IF) monolayer crystals. From a thermodynamic point of view, in the vicinity of the melting temperature [Tm(1)] of the once-folded chain crystal [IF(1)], the system studied provides a three-phase model composed of the melt phase, the stable phase of extended chain crystals [IF(0)], and the metastable phase of IF(1). Four phase selection pathways, namely, melt → IF(0) (S0), melt → IF(1) (S1), IF(1) → IF(0) (S10), and a composite pathway built of the latter two (S2) have been revealed experimentally. The first selected pathway at crystallization temperatures near Tm(1) depends on the supercooling, in agreement with the predication of Granasy-Oxtoby theory. Below a bifurcation point located s...
登录
查看更多内容
影响因子:
4.6
作者:
D. Zhu;Yi-Xin Liu;A. Shi;E. Chen
通讯作者:
D. Zhu;Yi-Xin Liu;A. Shi;E. Chen
DOI:
10.1016/b978-0-12-391927-4.10024-6
发表时间:
1985
期刊:
The European Physical Journal C
影响因子:
--
作者:
J. Israelachvili
通讯作者:
J. Israelachvili
影响因子:
5.5
作者:
Yi-Xin Liu;Jianfeng Li;D. Zhu;E. Chen;Hong-dong Zhang
通讯作者:
Yi-Xin Liu;Jianfeng Li;D. Zhu;E. Chen;Hong-dong Zhang
DOI:
--
发表时间:
2003
期刊:
--
影响因子:
--
作者:
G. Reiter;J. Sommer
通讯作者:
G. Reiter;J. Sommer
DOI:
10.1016/b978-0-08-096701-1.00246-9
发表时间:
1996
期刊:
Comprehensive Polymer Science and Supplements
影响因子:
--
作者:
A. Keller;G. Goldbeck-Wood
通讯作者:
A. Keller;G. Goldbeck-Wood