Evaporation structures of solvent drops evaporating from polymer surfaces: Influence of molar mass

被引：26
作者：
Li, Guangfen
Graf, Karlheinz
Bonaccurso, Elmar
Golovko, Drnytro S.
Best, Andreas
Butt, Hans-Juergen
机构：
[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[2] Univ Siegen, Ctr Micro & Nanochem & Engn, D-57068 Siegen, Germany
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2007年 / 208卷 / 19-20期
关键词：
coffee-stain effect; drop evaporation; ink-jet; poly (ethyl methacrylate); polystyrene (PS); polymer surfaces;
D O I：
10.1002/macp.200700122
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
When a solvent drop evaporates from a polymer surface, a characteristic structure remains. To analyze the structure formation during evaporation we deposited microdrops of ethyl acetate on planar PEMA and toluene on PS. The shape of the evaporation structures depends on the molar mass of the polymer, the number of droplets deposited, and the specific polymer/solvent combination. Crater-like structures with a flat bottom were observed for PEMA. With PS, dot-like protrusions were observed for low and intermediate molar masses; for M-w >= 210 kDa, crater-like rims with a depression in the center were formed. These structures are interpreted based on four different processes occurring during evaporation.
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收藏
页码：2134 / 2144
页数：11
相关论文
共 41 条
[1]   Fabrication of microvessels and microlenses from polymers by solvent droplets [J].
Bonaccurso, E ;
Butt, HJ ;
Hankeln, B ;
Niesenhaus, B ;
Graf, K .
APPLIED PHYSICS LETTERS, 2005, 86 (12) :1-3
[2]   Microdrops on atomic force microscope cantilevers: Evaporation of water and spring constant calibration [J].
Bonaccurso, E ;
Butt, HJ .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (01) :253-263
[3]   Microarrays by structured substrate swelling [J].
Bonaccurso, E ;
Butt, HJ ;
Graf, K .
EUROPEAN POLYMER JOURNAL, 2004, 40 (05) :975-980
[4]   Self-assembly in evaporated polymer solutions: Influence of the solution concentration [J].
Bormashenko, Edward ;
Pogreb, Roman ;
Musin, Albina ;
Stanevsky, Oleg ;
Bormashenko, Yelena ;
Whyman, Gene ;
Gendelman, Oleg ;
Barkay, Zahava .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 297 (02) :534-540
[5]   Template-assisted crystallization and colloidal self-assembly with use of the polymer micrometrically scaled honeycomb template [J].
Bormashenko, Edward ;
Bormashenko, Yelena ;
Pogreb, Roman ;
Stanevsky, Oleg ;
Whyman, Gene ;
Stein, Tamir ;
Itzhaq, Mordechai Hakham ;
Barkay, Zahava .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2006, 290 (1-3) :273-279
[6]   INFLUENCE OF EVAPORATION ON CONTACT-ANGLE [J].
BOURGESMONNIER, C ;
SHANAHAN, MER .
LANGMUIR, 1995, 11 (07) :2820-2829
[7]  
Brandrup J., 1999, Polymer handbook, VII
[8]   Evaporation-induced particle microseparations inside droplets floating on a chip [J].
Chang, ST ;
Velev, OD .
LANGMUIR, 2006, 22 (04) :1459-1468
[9]   Evaporation kinematics of polystyrene bead suspensions [J].
Conway, J ;
Korns, H ;
Fisch, MR .
LANGMUIR, 1997, 13 (03) :426-431
[10]   Experimental investigation of the effect of thermal properties of the substrate in the wetting and evaporation of sessile drops [J].
David, S. ;
Sefiane, K. ;
Tadrist, L. .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2007, 298 (1-2) :108-114
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