Skin formation and bubble growth during drying process of polymer solution.
Summary of "Skin formation and bubble growth during drying process of polymer solution."
When a polymer solution with volatile solvent is dried, skins are often formed at the surface of the solution. It has been observed that after the skin is formed, bubbles often appear in the solution. We conducted experiments to clarify the relation between the skin formation and the bubble formation. We measured the time dependence of the thickness of the skin layer, the size of the bubbles, and the pressure in the solution. From our experiments, we concluded that i) the gas in the bubble is a mixture of solvent vapor and air dissolved in the solution, ii) the bubble nucleation is assisted by the pressure decrease in the solution covered by the skin layer, and iii) the growth of the bubbles is diffusion limited, mainly limited by the diffusion of air molecules dissolved in the solution.
Graduate School of Engineering, The University of Tokyo, 113-8656, Tokyo, Japan, firstname.lastname@example.org.
This article was published in the following journal.
Name: The European physical journal. E, Soft matter
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22772595
- DOI: http://dx.doi.org/10.1140/epje/i2012-12057-2
I develop a kinetic mechanism to explain chain folding in polymer crystallization which is based on the competition between the formation of stems, which is due to frequent occupations of trans states...
The adsorption of carboxymethylcellulose polymers on molybdenite was studied using spectroscopic ellipsometry and atomic force microscopy imaging, using two polymers of differing degree of carboxyl gr...
Drying is one of the widely used methods of grain, fruit and vegetable preservation. The important aim of drying is to reduce the moisture content and thereby increase the life time of products by lim...
The transfer of synthesized 2D MoS2 films is important for fundamental and applied research. However, it is problematic to translate the well-established transfer processes for graphene to MoS2 due to...
We report on the drying process of sessile droplets of aqueous poly(ethylene oxide) (PEO) solutions studied by contact angle analysis. Liquid samples were prepared with the same initial concentration ...
In previous study (MW2004-011-02), patients with burn wounds had their damaged skin removed by either standard of care treatment or by Debrase Gel Dressing (DGD), which is composed of enzy...
The objective of this study is to evaluate whether CPAP delivered by bubble CPAP resulted in a greater proportion of infants being successfully extubated when compared with management with...
This randomized phase II trial studies how well giving topotecan hydrochloride or cyclodextrin-based polymer-camptothecin CRLX101 works in treating patients with recurrent small cell lung ...
The purpose of this study is to evaluate the efficacy of 3 different rapamycin-eluting-stent platforms to reduce coronary artery reblockage after stent implantation
Silicone gel is a self-drying silicone polymer that forms thin film after application onto the skin. Because silicone film is a medical device, silicone gel is also regarded as a medical d...
Medical and Biotech [MESH] Definitions
Strongly cationic polymer that binds to certain proteins; used as a marker in immunology, to precipitate and purify enzymes and lipids. Synonyms: aziridine polymer; Epamine; Epomine; ethylenimine polymer; Montrek; PEI; Polymin(e).
The process by which two molecules of the same chemical composition form a condensation product or polymer.
Countries in the process of change directed toward economic growth, that is, an increase in production, per capita consumption, and income. The process of economic growth involves better utilization of natural and human resources, which results in a change in the social, political, and economic structures.
A cognitive process involving the formation of ideas generalized from the knowledge of qualities, aspects, and relations of objects.
A 17-kDa single-chain polypeptide growth factor that plays a significant role in the process of WOUND HEALING and is a potent inducer of PHYSIOLOGIC ANGIOGENESIS. It binds to HEPARIN, which potentiates its biological activity and protects it from proteolysis. The growth factor is an extremely potent inducer of DNA synthesis in a variety of cell types from mesoderm and neuroectoderm lineages, and also has chemotactic and mitogenic activities. It was originally named acidic fibroblast growth factor based upon its chemical properties and to distinguish it from basic fibroblast growth factor (FIBROBLAST GROWTH FACTOR 2).