Dergi makalesi Açık Erişim
Kilic, Sevgi
<?xml version='1.0' encoding='UTF-8'?> <record xmlns="http://www.loc.gov/MARC21/slim"> <leader>00000nam##2200000uu#4500</leader> <datafield tag="540" ind1=" " ind2=" "> <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield> <subfield code="a">Creative Commons Attribution</subfield> </datafield> <datafield tag="909" ind1="C" ind2="O"> <subfield code="o">oai:zenodo.org:28691</subfield> <subfield code="p">user-tubitak-destekli-proje-yayinlari</subfield> </datafield> <datafield tag="520" ind1=" " ind2=" "> <subfield code="a">Mixtures of 1,2 Distearoyl-sn-glycero-3-phosphocholine (DSPC) and polyoxyethylene-40-stearate (PEG(40)St) were prepared at different molar ratios and their miscibility were investigated using Langmuir isotherms. Pure DSPC monolayer exhibited a liquid-condensed (LC) phase whereas PEG(40)St monolayer exhibited liquid-expanded (LE) phase at the air-water interface at 22 +/- 2 degrees C. At the collapse pressure of 33 mN/m, the PEG(40)St mean molecular area was calculated to be 28 angstrom(2)/molecule for 9: 1 composition and 50 angstrom(2)/molecule for 5: 5 composition, showing an increasing trend with the emulsifier content. A quantification method was developed to estimate the squeeze out amount of PEG(40)St from Langmuir isotherms of the DSPC/PEG(40)St mixtures at different molar ratios. Almost 93%, 82%, and 53% of PEG(40)St displaced for the 9:1, 7:3, and 5:5 mixtures, respectively, at the end of the first collapse plateau and showed a decreasing trend with the PEG(40)St content. Remaining PEG(40)St squeezed out at the end of the second collapse plateau, where 20% of PEG(40)St still contained within the 5: 5 composition. It was concluded that increasing PEG(40)St content would be advantageous to design more stable lipid based microbubbles.</subfield> </datafield> <datafield tag="650" ind1="1" ind2="7"> <subfield code="a">cc-by</subfield> <subfield code="2">opendefinition.org</subfield> </datafield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">user-tubitak-destekli-proje-yayinlari</subfield> </datafield> <datafield tag="909" ind1="C" ind2="4"> <subfield code="p">COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS</subfield> <subfield code="v">551</subfield> <subfield code="c">58-64</subfield> </datafield> <datafield tag="260" ind1=" " ind2=" "> <subfield code="c">2018-01-01</subfield> </datafield> <datafield tag="024" ind1=" " ind2=" "> <subfield code="a">10.1016/j.colsurfa.2018.05.001</subfield> <subfield code="2">doi</subfield> </datafield> <controlfield tag="001">28691</controlfield> <datafield tag="100" ind1=" " ind2=" "> <subfield code="a">Kilic, Sevgi</subfield> <subfield code="u">Izmir Inst Technol, Dept Chem Engn, TR-35430 Izmir, Turkey</subfield> </datafield> <datafield tag="856" ind1="4" ind2=" "> <subfield code="u">https://aperta.ulakbim.gov.trrecord/28691/files/bib-fe3b3b8a-bbff-476a-a95a-dc8dea55ed37.txt</subfield> <subfield code="s">195</subfield> <subfield code="z">md5:328c56ee7cca98270e3ce5c094be63bb</subfield> </datafield> <controlfield tag="005">20210315123901.0</controlfield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">publication</subfield> <subfield code="b">article</subfield> </datafield> <datafield tag="245" ind1=" " ind2=" "> <subfield code="a">Quantification of PEG(40)St squeeze out from DSPC/PEG(40)St monolayers at higher molar ratios</subfield> </datafield> <datafield tag="542" ind1=" " ind2=" "> <subfield code="l">open</subfield> </datafield> </record>
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