Coupling between crystallization and evaporation dynamics: Periodically nonlinear growth into concentric ringed spherulites

	Coupling between crystallization and evaporation dynamics: Periodically nonlinear growth into concentric ringed spherulites
	Li YG ; Huang HY ; He TB ; Wang ZB
刊名	polymer
	2013
卷号	54 期号:24 页码:6628-6635
关键词	POLY-L-ALANINE THIN-FILMS ISOTACTIC POLYSTYRENE BANDED SPHERULITES POLY(EPSILON-CAPROLACTONE) SOLUTION LAMELLAR CRYSTALS PATTERN-FORMATION DROPS DEPENDENCE DIFFUSION
ISSN号	0032-3861
通讯作者	he tb
中文摘要	despite the extensive study of periodic precipitation and rhythmic crystal growth into ringed patterns, the detail of the evolution process remains unclear, and thus the explanation is rather elusive. herein, we focus on monitoring the detailed growth process and dynamic, elucidating the underlying mechanism, and exploring key factors for the generation of poly(epsilon-caprolactone) (pcl) concentric ringed spherulites in evaporating droplets. in situ observation exhibits that accompanying the rhythmic evolution of the crystal, the region ahead the growth face changes periodically and the radial growth within each period is non-linear. it shows that having an evaporation-driven convection that carries liquid to the growth face drives the periodic dimple generation and rupture that leads to the rhythmic growth into discrete ringed spherulites. the non-linear growth is attributed to the coupling of evaporation and crystallization. we find that there are two key factors in the drying process that ensure the occurrence of the evaporation-driven flow and then the periodic crystal pattern. the structure formation reveals a complex interplay among solvent extraction, solution flow, solute diffusion, and crystal growth. (c) 2013 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000326851100015
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49478]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li YG,Huang HY,He TB,et al. Coupling between crystallization and evaporation dynamics: Periodically nonlinear growth into concentric ringed spherulites[J]. polymer,2013,54(24):6628-6635.
APA	Li YG,Huang HY,He TB,&Wang ZB.(2013).Coupling between crystallization and evaporation dynamics: Periodically nonlinear growth into concentric ringed spherulites.polymer,54(24),6628-6635.
MLA	Li YG,et al."Coupling between crystallization and evaporation dynamics: Periodically nonlinear growth into concentric ringed spherulites".polymer 54.24(2013):6628-6635.