{"id":246,"date":"2018-11-05T11:17:05","date_gmt":"2018-11-05T10:17:05","guid":{"rendered":"https:\/\/web.umons.ac.be\/smos\/?p=246"},"modified":"2022-05-24T11:20:11","modified_gmt":"2022-05-24T09:20:11","slug":"new-paper-in-collaboration-with-olivier-coulembier","status":"publish","type":"post","link":"https:\/\/web.umons.ac.be\/smos\/2018\/11\/05\/new-paper-in-collaboration-with-olivier-coulembier\/","title":{"rendered":"New paper in Collaboration with Olivier Coulembier"},"content":{"rendered":"
\"New
New paper in Collaboration with Olivier Coulembier<\/figcaption><\/figure>\n

 <\/p>\n

In this manuscript, a novel solvent-free and organocatalyzed ring-opening (co)polymerization (ORO(c)P) method utilizing benzoic acid(BA) as simple thermostable carboxylic acid-type catalyst is proposed to not only produce structurally well-defined aliphatic homopolyesters derived from L-lactide (L-LA) and \u0190-caprolactone (CL), but also and, unexpectedly, statistical copolyesters based on the two monomer units. RO(c)P reactions were conducted in bulk in a\u00a0 temperature range of 155-180\u00b0C, in presence of alcohols as initiators. A triblock copolymer, namely, PLLA-b-PCL-b-PLLA, was also synthesized, attesting to the \u201ccontrolled\/living\u201d character of this BA-OROP process. A bifunctional mechanism is proposed to operate, involving activation of both the monomer and the propagating hydroxyl by H-bonding. Very importantly, the BA organocatalyst could be readily recycled by simple sublimation and could be reused in further organocatalytic cycles. The perfect control over the mass parameters as well as the end-group fidelity were confirmed by mass spectrometry.<\/p>\n","protected":false},"excerpt":{"rendered":"

In this manuscript, a novel solvent-free and organocatalyzed ring-opening (co)polymerization (ORO(c)P) method utilizing benzoic acid(BA) as simple thermostable carboxylic acid-type catalyst is proposed to not only produce structurally well-defined aliphatic homopolyesters derived from L-lactide (L-LA) and \u0190-caprolactone (CL), but also and, unexpectedly, statistical copolyesters based on the two monomer units. RO(c)P reactions were conducted in bulk in a\u00a0 temperature range of 155-180\u00b0C, in presence of alcohols as initiators.<\/p>\n","protected":false},"author":157,"featured_media":247,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recherche"],"yoast_head":"\nNew paper in Collaboration with Olivier Coulembier - Service \/ FS - Synth\u00e8se et Spectrom\u00e9trie de Masse Organiques<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/web.umons.ac.be\/smos\/2018\/11\/05\/new-paper-in-collaboration-with-olivier-coulembier\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New paper in Collaboration with Olivier Coulembier - Service \/ FS - Synth\u00e8se et Spectrom\u00e9trie de Masse Organiques\" \/>\n<meta property=\"og:description\" content=\"In this manuscript, a novel solvent-free and organocatalyzed ring-opening (co)polymerization (ORO(c)P) method utilizing benzoic acid(BA) as simple thermostable carboxylic acid-type catalyst is proposed to not only produce structurally well-defined aliphatic homopolyesters derived from L-lactide (L-LA) and \u0190-caprolactone (CL), but also and, unexpectedly, statistical copolyesters based on the two monomer units. 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