Galanopoulo Paul, Gil Noémie, Gigmes Didier, Lefay Catherine, Guillaneuf Yohann, Lages Maëlle, Nicolas Julien, Lansalot Muriel, D'Agosto Franck
Univ Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, UMR 5128, Catalysis, Polymerization, Processes and Materials (CP2M), 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France.
Aix-Marseille-Univ, Institut de Chimie Radicalaire, Equipe CROPS, CNRS, UMR 7273, Avenue Escadrille Normandie Niemen, 13397, Marseille, France.
Angew Chem Int Ed Engl. 2022 Apr 4;61(15):e202117498. doi: 10.1002/anie.202117498. Epub 2022 Feb 19.
Aqueous emulsion copolymerizations of dibenzo[c,e]oxepane-5-thione (DOT) were performed with n-butyl acrylate (BA), styrene (S) and a combination of both. In all cases, stable latexes were obtained in less than two hours under conventional conditions; that is in the presence of sodium dodecyl sulfate (SDS) used as surfactant and potassium persulfate (KPS) as initiator. A limited solubility of DOT in BA was observed compared to S, yielding to a more homogeneous integration of DOT units in the PS latex. In both cases, the copolymer could be easily degraded under basic conditions. Emulsion terpolymerization between DOT, BA and S allowed us to produce stable latexes not only composed of degradable chains but also featuring a broad range of glass transition temperatures.
以丙烯酸正丁酯（BA）、苯乙烯（S）以及二者的组合进行二苯并[c,e]氧杂环庚烷-5-硫酮（DOT）的水乳液共聚。在所有情况下，在常规条件下，即在使用十二烷基硫酸钠（SDS）作为表面活性剂和过硫酸钾（KPS）作为引发剂的情况下，不到两小时就能获得稳定的胶乳。与S相比，观察到DOT在BA中的溶解度有限，这使得DOT单元在聚苯乙烯胶乳中更均匀地整合。在这两种情况下，共聚物在碱性条件下都很容易降解。DOT、BA和S之间的乳液三元共聚使我们能够生产出不仅由可降解链组成而且具有广泛玻璃化转变温度范围的稳定胶乳。
