Phospholipid black foam films: dynamic contact angles and gas permeability of DMPC+DMPG black films
The behavior of black foam films from aqueous dispersions of dimyristoylphosphatidyl-choline (DMPC) with addition of the soluble phospholipid dimyristoylphosphatidylglycerol (DMPG) has been studied in dynamic conditions. The dynamic contact angles θ and the gas permeability coefficient K have been m...
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| Veröffentlicht in: | Advances in colloid and interface science 2003-07, Vol.104 (1), p.37-51 |
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| container_title | Advances in colloid and interface science |
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| creator | Petkova, V. Platikanov, D. Nedyalkov, M. |
| description | The behavior of black foam films from aqueous dispersions of dimyristoylphosphatidyl-choline (DMPC) with addition of the soluble phospholipid dimyristoylphosphatidylglycerol (DMPG) has been studied in dynamic conditions. The dynamic contact angles
θ and the gas permeability coefficient
K have been measured using the diminishing bubble method. The DMPC vesicle suspension in water is obtained through sonication and DMPG is dissolved in it. Two solutions with different NaCl concentrations (0.1 M and 0.5 M) have been studied. The behavior of the dynamic contact angles is very different for DMPC black films with, and without DMPG, respectively. They follow very different time dependence during spontaneous or forced variations of the bubble size. The gas permeability coefficient is significantly reduced by the DMPG addition. The NaCl concentration also influences this specific behavior. It seems that the electrically charged DMPG anions, which determine a significant electrostatic disjoining pressure, play an important role for this specific behavior. The results are discussed in connection with data regarding the thickness and structure of these black foam films. Films from DMPC+DMPG solutions in ethanol plus water mixed solvent have been studied as well, but no quantitative results could be obtained. |
| doi_str_mv | 10.1016/S0001-8686(03)00035-6 |
| format | Article |
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θ and the gas permeability coefficient
K have been measured using the diminishing bubble method. The DMPC vesicle suspension in water is obtained through sonication and DMPG is dissolved in it. Two solutions with different NaCl concentrations (0.1 M and 0.5 M) have been studied. The behavior of the dynamic contact angles is very different for DMPC black films with, and without DMPG, respectively. They follow very different time dependence during spontaneous or forced variations of the bubble size. The gas permeability coefficient is significantly reduced by the DMPG addition. The NaCl concentration also influences this specific behavior. It seems that the electrically charged DMPG anions, which determine a significant electrostatic disjoining pressure, play an important role for this specific behavior. The results are discussed in connection with data regarding the thickness and structure of these black foam films. Films from DMPC+DMPG solutions in ethanol plus water mixed solvent have been studied as well, but no quantitative results could be obtained.</description><identifier>ISSN: 0001-8686</identifier><identifier>EISSN: 1873-3727</identifier><identifier>DOI: 10.1016/S0001-8686(03)00035-6</identifier><identifier>PMID: 12818489</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Biophysical Phenomena ; Biophysics ; Black foam film ; Dimyristoylphosphatidylcholine (DMPC) ; Dimyristoylphosphatidylcholine - chemistry ; Dimyristoylphosphatidylglycerol (DMPG) ; Dynamic contact angle ; Ethanol - pharmacology ; Gas permeability ; Models, Statistical ; Permeability ; Phosphatidylglycerols - chemistry ; Phospholipids - chemistry ; Pressure ; Time Factors</subject><ispartof>Advances in colloid and interface science, 2003-07, Vol.104 (1), p.37-51</ispartof><rights>2003 Elsevier Science B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c276t-d800c78fc2f7d27d22136a872f09eaa6da8775b921cd6d25a279f9830d7aa3a33</citedby><cites>FETCH-LOGICAL-c276t-d800c78fc2f7d27d22136a872f09eaa6da8775b921cd6d25a279f9830d7aa3a33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0001-8686(03)00035-6$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12818489$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Petkova, V.</creatorcontrib><creatorcontrib>Platikanov, D.</creatorcontrib><creatorcontrib>Nedyalkov, M.</creatorcontrib><title>Phospholipid black foam films: dynamic contact angles and gas permeability of DMPC+DMPG black films</title><title>Advances in colloid and interface science</title><addtitle>Adv Colloid Interface Sci</addtitle><description>The behavior of black foam films from aqueous dispersions of dimyristoylphosphatidyl-choline (DMPC) with addition of the soluble phospholipid dimyristoylphosphatidylglycerol (DMPG) has been studied in dynamic conditions. The dynamic contact angles
θ and the gas permeability coefficient
K have been measured using the diminishing bubble method. The DMPC vesicle suspension in water is obtained through sonication and DMPG is dissolved in it. Two solutions with different NaCl concentrations (0.1 M and 0.5 M) have been studied. The behavior of the dynamic contact angles is very different for DMPC black films with, and without DMPG, respectively. They follow very different time dependence during spontaneous or forced variations of the bubble size. The gas permeability coefficient is significantly reduced by the DMPG addition. The NaCl concentration also influences this specific behavior. It seems that the electrically charged DMPG anions, which determine a significant electrostatic disjoining pressure, play an important role for this specific behavior. The results are discussed in connection with data regarding the thickness and structure of these black foam films. Films from DMPC+DMPG solutions in ethanol plus water mixed solvent have been studied as well, but no quantitative results could be obtained.</description><subject>Biophysical Phenomena</subject><subject>Biophysics</subject><subject>Black foam film</subject><subject>Dimyristoylphosphatidylcholine (DMPC)</subject><subject>Dimyristoylphosphatidylcholine - chemistry</subject><subject>Dimyristoylphosphatidylglycerol (DMPG)</subject><subject>Dynamic contact angle</subject><subject>Ethanol - pharmacology</subject><subject>Gas permeability</subject><subject>Models, Statistical</subject><subject>Permeability</subject><subject>Phosphatidylglycerols - chemistry</subject><subject>Phospholipids - chemistry</subject><subject>Pressure</subject><subject>Time Factors</subject><issn>0001-8686</issn><issn>1873-3727</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkF1LHDEUhkOp1PXjJ7Tkqigymo-dJONNkVVXYUVBex3O5EPTzkymk1lh_71Zd20vCyEnB57zHvIg9JWSU0qoOHskhNBCCSWOCD_ODS8L8QlNqJK84JLJz2jyF9lFeyn9yi0rZfkF7VKmqJqqaoLMw0tM_UtsQh8srhswv7GP0GIfmjadY7vqoA0Gm9iNYEYM3XPjUi4WP0PCvRtaB3VowrjC0ePLu4fZSb7mH1HrlAO046FJ7nBb99HP66un2U2xuJ_fzi4WhWFSjIVVhBipvGFeWpYPo1yAksyTygEIm9-yrCtGjRWWlcBk5SvFiZUAHDjfR983uf0Q_yxdGnUbknFNA52Ly6Ql53LKyTSD5QY0Q0xpcF73Q2hhWGlK9Nqufrer1-o04frdrhZ57tt2wbJunf03tdWZgR8bwOVvvgY36GSC64yzYXBm1DaG_6x4A9F8iRg</recordid><startdate>20030701</startdate><enddate>20030701</enddate><creator>Petkova, V.</creator><creator>Platikanov, D.</creator><creator>Nedyalkov, M.</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20030701</creationdate><title>Phospholipid black foam films: dynamic contact angles and gas permeability of DMPC+DMPG black films</title><author>Petkova, V. ; Platikanov, D. ; Nedyalkov, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c276t-d800c78fc2f7d27d22136a872f09eaa6da8775b921cd6d25a279f9830d7aa3a33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Biophysical Phenomena</topic><topic>Biophysics</topic><topic>Black foam film</topic><topic>Dimyristoylphosphatidylcholine (DMPC)</topic><topic>Dimyristoylphosphatidylcholine - chemistry</topic><topic>Dimyristoylphosphatidylglycerol (DMPG)</topic><topic>Dynamic contact angle</topic><topic>Ethanol - pharmacology</topic><topic>Gas permeability</topic><topic>Models, Statistical</topic><topic>Permeability</topic><topic>Phosphatidylglycerols - chemistry</topic><topic>Phospholipids - chemistry</topic><topic>Pressure</topic><topic>Time Factors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Petkova, V.</creatorcontrib><creatorcontrib>Platikanov, D.</creatorcontrib><creatorcontrib>Nedyalkov, M.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Advances in colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Petkova, V.</au><au>Platikanov, D.</au><au>Nedyalkov, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Phospholipid black foam films: dynamic contact angles and gas permeability of DMPC+DMPG black films</atitle><jtitle>Advances in colloid and interface science</jtitle><addtitle>Adv Colloid Interface Sci</addtitle><date>2003-07-01</date><risdate>2003</risdate><volume>104</volume><issue>1</issue><spage>37</spage><epage>51</epage><pages>37-51</pages><issn>0001-8686</issn><eissn>1873-3727</eissn><abstract>The behavior of black foam films from aqueous dispersions of dimyristoylphosphatidyl-choline (DMPC) with addition of the soluble phospholipid dimyristoylphosphatidylglycerol (DMPG) has been studied in dynamic conditions. The dynamic contact angles
θ and the gas permeability coefficient
K have been measured using the diminishing bubble method. The DMPC vesicle suspension in water is obtained through sonication and DMPG is dissolved in it. Two solutions with different NaCl concentrations (0.1 M and 0.5 M) have been studied. The behavior of the dynamic contact angles is very different for DMPC black films with, and without DMPG, respectively. They follow very different time dependence during spontaneous or forced variations of the bubble size. The gas permeability coefficient is significantly reduced by the DMPG addition. The NaCl concentration also influences this specific behavior. It seems that the electrically charged DMPG anions, which determine a significant electrostatic disjoining pressure, play an important role for this specific behavior. The results are discussed in connection with data regarding the thickness and structure of these black foam films. Films from DMPC+DMPG solutions in ethanol plus water mixed solvent have been studied as well, but no quantitative results could be obtained.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>12818489</pmid><doi>10.1016/S0001-8686(03)00035-6</doi><tpages>15</tpages></addata></record> |
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| ispartof | Advances in colloid and interface science, 2003-07, Vol.104 (1), p.37-51 |
| issn | 0001-8686 1873-3727 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Biophysical Phenomena Biophysics Black foam film Dimyristoylphosphatidylcholine (DMPC) Dimyristoylphosphatidylcholine - chemistry Dimyristoylphosphatidylglycerol (DMPG) Dynamic contact angle Ethanol - pharmacology Gas permeability Models, Statistical Permeability Phosphatidylglycerols - chemistry Phospholipids - chemistry Pressure Time Factors |
| title | Phospholipid black foam films: dynamic contact angles and gas permeability of DMPC+DMPG black films |
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