Compressed ethylene-assisted formation of the reverse micelle of PEO-PPO-PEO copolymer
Identifieur interne : 001967 ( Main/Merge ); précédent : 001966; suivant : 001968Compressed ethylene-assisted formation of the reverse micelle of PEO-PPO-PEO copolymer
Auteurs : RUI ZHANG [République populaire de Chine] ; JUN LIU [République populaire de Chine] ; JUN HE [République populaire de Chine] ; BUXING HAN [République populaire de Chine] ; ZHIMIN LIU [République populaire de Chine] ; TAO JIANG [République populaire de Chine] ; T. Weize Wu [République populaire de Chine] ; LIXIA RONG [République populaire de Chine] ; HUI ZHAO [République populaire de Chine] ; BAOZHONG DONG [République populaire de Chine] ; Guo-Hua Hu [France]Source :
- Macromolecules [ 0024-9297 ] ; 2003.
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Abstract
The triblock copolymer (EO)27(PO)61(EO)27 aggregates in p-xylene upon addition of ethylene. An abrupt increase of water solubilization is observed at a certain ethylene pressure. The molar ratio of water to EO segment (W0) can be as high as 4.2 under suitable conditions. The reverse micelles can solubilize ionic substances, such as methyl orange. The polarity of the water domains increases with increasing W0 as shown by a solvatochromic study. The structure of the reverse micelles is characterized by small-angle X-ray scattering and Fourier transform infrared. The results indicate the existence of lamellar structure and "bulk" (hydrogen-bonded) water (H2O and D2O) in the reverse micellar system. The formation and breaking of the reverse micelles can be repeated by adjusting the ethylene pressure.
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Weize Wu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Lixia Rong" sort="Lixia Rong" uniqKey="Lixia Rong" last="Lixia Rong">LIXIA RONG</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of High Energy Physics, Chinese Academy of Sciences</s1><s2>Beijing 100039</s2><s3>CHN</s3><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Hui Zhao" sort="Hui Zhao" uniqKey="Hui Zhao" last="Hui Zhao">HUI 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aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Jun Liu" sort="Jun Liu" uniqKey="Jun Liu" last="Jun Liu">JUN LIU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Jun He" sort="Jun He" uniqKey="Jun He" last="Jun He">JUN HE</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Buxing Han" sort="Buxing Han" uniqKey="Buxing Han" last="Buxing Han">BUXING HAN</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Zhimin Liu" sort="Zhimin Liu" uniqKey="Zhimin Liu" last="Zhimin Liu">ZHIMIN LIU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Tao Jiang" sort="Tao Jiang" uniqKey="Tao Jiang" last="Tao Jiang">TAO JIANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Wu, T Weize" sort="Wu, T Weize" uniqKey="Wu T" first="T. Weize" last="Wu">T. Weize Wu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>The Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Lixia Rong" sort="Lixia Rong" uniqKey="Lixia Rong" last="Lixia Rong">LIXIA RONG</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of High Energy Physics, Chinese Academy of Sciences</s1><s2>Beijing 100039</s2><s3>CHN</s3><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Hui Zhao" sort="Hui Zhao" uniqKey="Hui Zhao" last="Hui Zhao">HUI ZHAO</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of High Energy Physics, Chinese Academy of Sciences</s1><s2>Beijing 100039</s2><s3>CHN</s3><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Baozhong Dong" sort="Baozhong Dong" uniqKey="Baozhong Dong" last="Baozhong Dong">BAOZHONG DONG</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of High Energy Physics, Chinese Academy of Sciences</s1><s2>Beijing 100039</s2><s3>CHN</s3><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Hu, Guo Hua" sort="Hu, Guo Hua" uniqKey="Hu G" first="Guo-Hua" last="Hu">Guo-Hua Hu</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Laboratory of Chemical Engineering Sciences, CNRS-ENSIC-INPL</s1><s2>54001 Nancy</s2><s3>FRA</s3><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></analytic><series><title level="j" type="main">Macromolecules</title><title level="j" type="abbreviated">Macromolecules</title><idno type="ISSN">0024-9297</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Macromolecules</title><title level="j" type="abbreviated">Macromolecules</title><idno type="ISSN">0024-9297</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amphiphilic polymer</term><term>Compressed gas</term><term>Ethylene</term><term>Ethylene oxide copolymer</term><term>Experimental study</term><term>Mechanism of action</term><term>Micellar solution</term><term>Organic solution</term><term>Propylene copolymer</term><term>Reverse micelle</term><term>Solubilization</term><term>Solution structure</term><term>Triblock copolymer</term><term>Water</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Polymère amphiphile</term><term>Ethylène oxyde copolymère</term><term>Copolymère triséquencé</term><term>Propène copolymère</term><term>Solution organique</term><term>Solution micellaire</term><term>Micelle inverse</term><term>Structure solution</term><term>Solubilisation</term><term>Eau</term><term>Gaz comprimé</term><term>Ethylène</term><term>Mécanisme action</term><term>Etude expérimentale</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Eau</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The triblock copolymer (EO)<sub>27</sub>(PO)<sub>61</sub>(EO)<sub>27</sub> aggregates in p-xylene upon addition of ethylene. An abrupt increase of water solubilization is observed at a certain ethylene pressure. The molar ratio of water to EO segment (W<sub>0</sub>) can be as high as 4.2 under suitable conditions. The reverse micelles can solubilize ionic substances, such as methyl orange. The polarity of the water domains increases with increasing W<sub>0</sub> as shown by a solvatochromic study. The structure of the reverse micelles is characterized by small-angle X-ray scattering and Fourier transform infrared. The results indicate the existence of lamellar structure and "bulk" (hydrogen-bonded) water (H<sub>2</sub>O and D<sub>2</sub>O) in the reverse micellar system. The formation and breaking of the reverse micelles can be repeated by adjusting the ethylene pressure.</div></front></TEI><affiliations><list><country><li>France</li><li>République populaire de Chine</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Nancy</li><li>Pékin</li></settlement><orgName><li>Centre national de la recherche scientifique</li><li>Laboratoire réactions et génie des procédés</li><li>Université de Lorraine</li></orgName></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Rui Zhang" sort="Rui Zhang" uniqKey="Rui Zhang" last="Rui Zhang">RUI ZHANG</name></noRegion><name sortKey="Baozhong Dong" sort="Baozhong Dong" uniqKey="Baozhong Dong" last="Baozhong Dong">BAOZHONG DONG</name><name sortKey="Buxing Han" sort="Buxing Han" uniqKey="Buxing Han" last="Buxing Han">BUXING HAN</name><name sortKey="Hui Zhao" sort="Hui Zhao" uniqKey="Hui Zhao" last="Hui Zhao">HUI ZHAO</name><name sortKey="Jun He" sort="Jun He" uniqKey="Jun He" last="Jun He">JUN HE</name><name sortKey="Jun Liu" sort="Jun Liu" uniqKey="Jun Liu" last="Jun Liu">JUN LIU</name><name sortKey="Lixia Rong" sort="Lixia Rong" uniqKey="Lixia Rong" last="Lixia Rong">LIXIA RONG</name><name sortKey="Tao Jiang" sort="Tao Jiang" uniqKey="Tao Jiang" last="Tao Jiang">TAO JIANG</name><name sortKey="Wu, T Weize" sort="Wu, T Weize" uniqKey="Wu T" first="T. Weize" last="Wu">T. Weize Wu</name><name sortKey="Zhimin Liu" sort="Zhimin Liu" uniqKey="Zhimin Liu" last="Zhimin Liu">ZHIMIN LIU</name></country><country name="France"><region name="Grand Est"><name sortKey="Hu, Guo Hua" sort="Hu, Guo Hua" uniqKey="Hu G" first="Guo-Hua" last="Hu">Guo-Hua Hu</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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