From coffee ring to spherulites ring of poly(ethylene oxide) film from drying droplet

2018 ◽  
Vol 434 ◽  
pp. 626-632 ◽  
Author(s):  
Yinchun Hu ◽  
Xuerong Zhang ◽  
Maibo Qiu ◽  
Yan Wei ◽  
Qiong Zhou ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Oxide Film ◽  
Coffee Ring ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Chitosan modified by poly(ethylene oxide): Film and mixture properties

2002 ◽  
Vol 84 (6) ◽  
pp. 1114-1122 ◽  
Author(s):  
Tatiana Budtova ◽  
Nina Belnikevich ◽  
Ljudmila Kalyuzhnaya ◽  
Vladimir Alexeev ◽  
Sergei Bronnikov ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Oxide Film ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Chitosan modified by poly(ethylene oxide): Film and mixture properties

2002 ◽  
Vol 84 (12) ◽  
pp. 2345-2345 ◽  
Author(s):  
Tatiana Budtova ◽  
Nina Belnikevich ◽  
Ljudmila Kalyuzhnaya ◽  
Vladimir Alexeev ◽  
Sergei Bronnikov ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Oxide Film ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Monolith formation and ring-stain suppression in low-pressure evaporation of poly(ethylene oxide) droplets

2012 ◽  
Vol 695 ◽  
pp. 321-329 ◽  
Author(s):  
Kyle A. Baldwin ◽  
Samuel Roest ◽  
David J. Fairhurst ◽  
Khellil Sefiane ◽  
Martin E. R. Shanahan
Keyword(s):  
Ethylene Oxide ◽  
Triple Line ◽  
Deposition Process ◽  
Low Pressure ◽  
Quantitative Model ◽  
Dimensionless Number ◽  
Coffee Ring ◽  
Wide Range ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

AbstractWhen droplets of dilute suspensions are left to evaporate the final dry residue is typically the familiar coffee-ring stain, with nearly all material deposited at the initial triple line (Deegan et al., Nature, vol. 389, 1997, pp. 827–829). However, aqueous poly(ethylene oxide) (PEO) droplets only form coffee-ring stains for a very narrow range of the experimental parameters molecular weight, concentration and drying rate. Instead, over a wide range of values they form either a flat disk or a very distinctive tall central monolith via a four-stage deposition process which includes a remarkable bootstrap-building step. To predict which deposit will form, we present a quantitative model comparing the effects of advective build-up at the triple line to diffusive flux and use this to calculate a dimensionless number $\chi $. By experimentally varying concentration and flux (using a low-pressure drying chamber), the prediction is tested over nearly two orders of magnitude in both variables and shown to be in good agreement with the boundary between disks and monoliths at $\chi \approx 1. 6$.

Quenching of photoexcited Ru(bpy)32+by a hydrazone derivative in a poly(ethylene oxide) film

1998 ◽  
Vol 94 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Shigenobu Ishikawa ◽  
Takao Ohshima ◽  
Toshiyuki Abe ◽  
Keiji Nagai ◽  
Masao Kaneko
Keyword(s):  
Ethylene Oxide ◽  
Oxide Film ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Hydrazone Derivative

Lamellar Thickness of Poly(ethylene oxide) Film Crystallized from the Gel State

2018 ◽  
Vol 51 (19) ◽  
pp. 7745-7755 ◽  
Author(s):  
Jungju Ryu ◽  
Hoik Lee ◽  
Hyosin Kim ◽  
Daewon Sohn
Keyword(s):  
Ethylene Oxide ◽  
Oxide Film ◽  
Lamellar Thickness ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Structural Conformation in a Poly(ethylene oxide) Film Determined by X-ray Emission Spectroscopy

2007 ◽  
Vol 111 (40) ◽  
pp. 11658-11661
Author(s):  
Stepan Kashtanov ◽  
Guorong V. Zhuang ◽  
Andreas Augustsson ◽  
Joseph Nordgren ◽  
Y. Luo ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Oxide Film ◽  
Emission Spectroscopy ◽  
X Ray ◽  
Structural Conformation ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The Structure of Radiation Cross-Linked Poly (ethylene oxide) Gels

1971 ◽  
Vol 29 ◽  
pp. 76-77
Author(s):  
C. E. Cluthe ◽  
G. G. Cocks
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Parallel Plate ◽  
Average Molecular Weight ◽  
Radical Reaction ◽  
Free Radical Reaction ◽  
Nitrogen Gas ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Initial Viscosity

Aqueous solutions of a 1 weight-per cent poly (ethylene oxide) (PEO) were degassed under vacuum, transferred to a parallel plate viscometer under a nitrogen gas blanket, and exposed to Co60 gamma radiation. The Co60 source was rated at 4000 curies, and the dose ratewas 3.8x105 rads/hr. The poly (ethylene oxide) employed in the irradiations had an initial viscosity average molecular weight of 2.1 x 106.The solutions were gelled by a free radical reaction with dosages ranging from 5x104 rads to 4.8x106 rads.

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