BEGIN:VCALENDAR VERSION:2.0 PRODID:-//ZContent.net//ZapCalLib 1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VEVENT SUMMARY:Tailoring the Structure, Morphology and Properties of Isodimorphic Random Copolymers by Varying Chemical Structure, Composition and Molecular Weight LOCATION:Chemistry A101 TZID:America/Denver DTSTART:20250314T160000 UID:2026-04-05-22-10-18@natsci.colostate.edu DTSTAMP:20260405T221018 Description:About the Semainr:\n\nCombining the properties of parent homopo lymers can be accomplished through random copolymerization. However\, when the materials are semi-crystalline\, complex behavior may arise. The stru cture and properties of semi-crystalline random copolymers (i.e.\, PA-ran- PB) depend on their chemical structure. Three general cases have been desc ribed in the literature (see Figure below)1: (a) Isomorphism occurs when t he chemical structures of PA and PB are very similar\, allowing for total inclusion of both comonomers in the crystal lattice or miscibility in the crystalline state. (b) Conversely\, when the chemical structures differ si gnificantly\, the behavior is largely influenced by the exclusion of comon omer PB from the crystal lattice of PA and vice-versa\, indicating total e xclusion behavior. (c) Isodimorphic copolymers represent the most intrigui ng cases\, exhibiting intermediate behavior in which partial inclusion of comonomers is permitted\, and crystallization can occur across the entire composition range. Isodimorphic copolymers are characterized by a pseudo-e utectic point when the melting point is charted as a function of compositi on. A crystal structure typical of PA forms to the left of this point\, wh ile a PB-type crystal structure is found to the right. The presence of thi s pseudo-eutectic point means that the melting temperature can be adjusted by the copolymer composition\, as well as their crystallinity\, crystal s tructure\, and mechanical properties. Recently\, we reported a new crystal lization mode that combines isomorphic and isodimorphic behavior in alipha tic copolycarbonates. This versatility makes isodimorphic copolymers ideal materials for various applications\, including biodegradable films (for c opolyesters)\, thermoplastic elastomers\, hot-melt adhesives\, and tough s emi-crystalline polymers. This seminar will explore the effects of chemica l structure\, molecular weight\, and composition on the structure\, morpho logy\, nucleation\, and crystallization of a wide range of biodegradable i sodimorphic copolyesters and copolycarbonates.\n\n \;\n\nAbout the Spe aker:\n\nProfessor Alejandro J. Müller is an IKERBASQUE Research Professo r at POLYMAT and the Department of Polymers and Advanced Materials: Physic s\, Chemistry\, and Technology within the Faculty of Chemistry at the Univ ersity of the Basque Country UPV/EHU in Donostia-San Sebastián\, Spain. H e has co-authored more than 550 publications in indexed journals\, which h ave attracted over 22\,000 citations\, giving him an h-index of 77. He has supervised 37 doctoral theses\, 62 Master\\'s theses\, and 96 undergradua te theses. Prof. Müller has delivered over 110 keynote\, plenary\, and in vited lectures across around 30 countries. He leads the Polymer Physics an d Advanced Manufacturing research area of POLYMAT (https://www.polymat.eu/ en/research/Polymer-Physics-Advanced-Manufacturing) and coordinates the Po lymer Physics of Advanced Multiphasic Materials group. His research intere sts include the structure\, morphology\, nucleation\, crystallization\, an d crystallization kinetics of semicrystalline polymers and multiphase mate rials\, particularly polymer blends\, block copolymers\, biopolymers\, and nanocomposites. Prof. Müller has received several awards\, including the international Paul J. Flory Polymer Research Prize. He is a Corresponding Member of the National Academy of Engineering and Habitat of Venezuela (A NIH). In 2021\, he was elected as a corresponding member of the Latin Amer ican Academy of Sciences (ACAL). In July 2023\, the municipality of Beijin g\, China\, awarded him the \"Zhongguancun Award for International Coopera tion 2022\" for his scientific collaboration with the Institute of Chemist ry of the Chinese Academy of Sciences (ICCAS). He is an editor of the jour nal POLYMER (Elsevier)\, focusing on the joint areas of Polymer Physics an d Physical Chemistry 4:00 pm END:VEVENT END:VCALENDAR