Brewster angle microscopy study of poly(epsilon-caprolactone) crystal growth in Langmuir films at the air/water interface

doi:10.1021/la060048b

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	Brewster angle microscopy study of poly(epsilon-caprolactone) crystal growth in Langmuir films at the air/water interface
	Li, Bingbing ; Wu, Yitian ; Liu, Minghua ; Esker, Alan R.
刊名	LANGMUIR
	2006-05-23
卷号	22 期号:11 页码:4902-4905
ISSN号	0743-7463
DOI	10.1021/la060048b
英文摘要	Surface pressure-induced crystallization of poly(is an element of-caprolactone) (PCL) from a metastable region of the surface pressure-area per monomer (Pi-A) isotherm in Langmuir monolayers at the air/water (A/W) interface has been captured in real time by Brewster angle microscopy (BAM). Morphological features of PCL crystals grown in Langmuir films during the compression process exhibit four fully developed faces and two distorted faces. During expansion of the crystallized film, polymer chains slowly detach from the crystalline domains and diffuse back into the monolayer as the crystals "melt". Typical diffusion-controlled morphologies are revealed by BAM during the melting process as the secondary dendrites melt away faster, that is, at a higher surface pressure than the principal axes. Electron diffraction on Langmuir-Schaefer films suggests that the lamellar crystals are oriented with the polymer chain axes perpendicular to the substrate surface, while atomic force microscopy reveals a crystal thickness of similar to 7.6 nm.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000237593000005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/57955]
专题	中国科学院化学研究所
通讯作者	Esker, Alan R.
作者单位	1.Virginia Polytech Inst & State Univ, Dept Chem 0212, Blacksburg, VA 24061 USA 2.Chinese Acad Sci, Key Lab Colloid & Interface Sci, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, Bingbing,Wu, Yitian,Liu, Minghua,et al. Brewster angle microscopy study of poly(epsilon-caprolactone) crystal growth in Langmuir films at the air/water interface[J]. LANGMUIR,2006,22(11):4902-4905.
APA	Li, Bingbing,Wu, Yitian,Liu, Minghua,&Esker, Alan R..(2006).Brewster angle microscopy study of poly(epsilon-caprolactone) crystal growth in Langmuir films at the air/water interface.LANGMUIR,22(11),4902-4905.
MLA	Li, Bingbing,et al."Brewster angle microscopy study of poly(epsilon-caprolactone) crystal growth in Langmuir films at the air/water interface".LANGMUIR 22.11(2006):4902-4905.