- Dr. Pablo Froimowicz (Design and Chemistry of Macromolecules Group, Institute of Technology in Polymers and Nanotechnology, University of Buenos Aires, Buenos Aires, Argentina)
- Pr. Hatsuo Ishida, Case Western Reserve University (USA)
- Pr. Shiao-Wei Kuo (Department of Materials and Optoelectronic Science, National Sun Yat Sen University, Kaohsiung, Taiwan)
- Pr Yusuf Yagci (Department of Chemistry Faculty of Science and Literature, Istanbul Technical University Maslak, Istanbul, Turkey)
- Dr. Bimlesh Lochab (Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, India)
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Pablo Froimowicz earned a Ph.D. in chemical sciences, National University of Córdoba, Argentina, and a Ph.D. in materials science and engineering, Grenoble Institute of Technology, France.
After postdoctoral works at University of Toronto, Canada, and Max Planck Institute for Polymer Research, Germany, he joined the Institute of Technology in Polymers and Nanotechnology (ITPN), Argentina, establishing his research group, Design and Chemistry of Macromolecules.
At this time, he also temporary moved to Case Western Reserve University, USA, as a Visiting Associate Professor. His research interest is in exploring novel concepts at the molecular level to then apply them in the design, synthesis, and application of molecularly-designed benzoxazine-based materials.
Presentation: Design and synthesis of novel benzoxazines and synthetic approaches to obtain them
Polybenzoxazines, among the youngest exponents in the thermoset arena, established itself as a standalone discipline within the entire polymer field. While polybenzoxazines present a set of very desirable properties, some intrinsic properties make them not completely the ideal resin of choice. For instance, the usually high polymerization temperature of resins and the associated volatility of monomers at elevated temperatures should be further enhanced. Therefore, a deeper understanding of benzoxazine chemistry, not only toward polymerization but in all senses, will let us easily design new and original chemical pathways to synthesize novel benzoxazines and benzoxazine-based systems capable of inducing programmable properties into the final polybenzoxazine-based materials. This presentation will focus on clever and innovative designs of new benzoxazines bearing novel molecular architectures and unusual functional and structural motif with the clear objective of inducing predictable chemical behaviors of the monomers and introducing new, or enhanced, desired properties into the final thermosets.
Ph.D.: Macromolecular Sci. Dept. at Case Western Reserve Univ., Cleveland, Ohio. Fellow of ACS (PMSE), SAMPE, and SPE.
Awards among others: The Global Salute to Polymers Award (The American Chemical Society). The Alexander von Humboldt Award for Senior Scientist, Humboldt Foundation, Germany; Eminent Scientist, RIKEN:Japan; Award for Excellence in Adhesion Res., The Soc. of Adhesion; The Intern. Res. Award, SPE.
12 edited and translated books, 40 disclosures and patents, and 520 papers. H-index is 90 with total citation 28,500. Editor-in-Chief of "Composite Interfaces," and Associate Editor of “Polym. & Polym. Compos.” as well as “Frontiers: Compos. Mater..” Member of the Editorial Board of “The J. of Adhesion,” “J. of Nanostructured Polym. and Nanocompos.,” “Polymers” “J. of Materials,” “Intern. Res. J. of Pure & Appl. Chem.,” “Austin J. of Nanomed. & Nanotechnol.,” “Intern. J. of Nano Studies & Technol.,” “J. of Nanotechnol. & Mater. Sci.” “BOAJ Nanotechnol.” “Nanomater. Chem. & Technol.” “Recent Patents on Mater. Sci.,” “Nanomater. Chem. & Technol.,” “Macromolelcules: An Indian J.” “Sci” “J. of Adv. Eng.” “React. Funct. Polym.”
Presentation: Broadening of Molecular Design Flexibility of Benzoxazine Chemistry from Commodity to Smart to Extreme Performance Polymers
Benzoxazine resins offer several unusual properties many other polymers seldom exhibit, including near zero-expansion upon polymerization, very high char yield, development of phisicomechanical properties at an early conversion, lower surface free energy than Teflon without F atoms, and excellent physical and mechanical property balance. Of particular notable advantage is the extremely high molecular design flexibility that allows tailoring of desired properties. It is possible to synthesize tens of thousand benzoxazine resins with readily available raw materials and natural renewable resources. Very recently, additional class of benzoxazines have been shown to polymerize, adding yet further large number of compounds that can be synthesized. This lecture introduces further advanced synthesis and polymerization of modern benzoxazine resins, including smart, extreme property, and truly biobased benzoxazines.
Shiao-Wei Kuo received his BSc degree in Chemical Engineering from National Chung-Hsing University in 1998 and Ph.D degree in Applied Chemistry from National Chiao-Tung University in Taiwan in 2002. He continued his research work at Chiao-Tung University as a postdoctoral researcher during 2002-2007. From 2005 to 2006, he was also a postdoctoral researcher at the University of Akron in USA. He joined Department of Materials and Optoelectronic Science, National Sun Yat-Sen University in Taiwan as an assistant professor in 2007 and was promoted to professor in 2013. Since 2018, he is also the coordinator of Polymer Science and Engineering Program, Ministry of Science and Technology, Taiwan. He has published more than 330 SCI papers, 1 book, 5 book chapters and 5 patents. His research interests include polymer interactions, self-assembly nanostructures, mesoporous materials, covalent organic frameworks, POSS nanocomposites, polypeptides and polybenzoxazine.
Presentation: Functional Polymers based on Benzoxazine Chemistry
The organic/inorganic hybrid materials from polybenzoxazine (PBZ) have received much interesting recently due to their excellent thermal and mechanical properties, flame retardance, low dielectric constant, well-defined inorganic framework at nanosized scale level, and higher performance relative to those of non-hybrid PBZs. This talk will describe the synthesis, dielectric constants, and thermal, rheological, and mechanical properties of covalently bonded mono- and multifunctionalized benzoxazine hybrids, other functionalized benzoxazine derivatives, and non-covalently (hydrogen) bonded benzoxazine composites.
Bimlesh Lochab obtained an MSc (1997–1999), M.Tech. (1999–2000) from IIT, Delhi, India and D. Phil. (2002–2005) from the University of Oxford on the topic of polymers for electro-optic applications. She returned to India after PDF at the University of Oxford and University of Nottingham, UK on nanomaterials. After her return to India, she received the received fundings from CSIR, DST and Young Scientist Award to research on cardanol, a cashew-nut industry waste, sourced benzoxazine polymers. In 2012, she joined, as an Assistant professor and since 2018 working as an Associate Professor in Department of Chemistry Shiv Nadar University (SNU), Uttar Pradesh, India.
Her research interests include synthesis of monomers and polymers sourced from agricultural and industrial wastes and their applications as adhesives, and nanocomposites for energy storage and harvesting, and antibacterial applications.
Presentation: Emergence of Sustainable benzoxazine frameworks: A new story with greener future
Polybenzoxazines (PBz) are emerging class of polymers, obtained by initiator-free thermally mediated ring opening polymerization (ROP) of benzoxazine (Bz) monomers. The properties exhibited by PBzs are more superior as compared to traditional commercial polymers epoxies, phenolics, bismaleimides. The attractive thermo-physico-mechanical properties, near zero shrinkage upon polymerization, low water adsorption, high char yield and further molecular flexibility at structural level and so on.
Considering the sustainability perspective, replacement of raw materials with bio-based abundantly available feedstock is need of the hour.(4) For Bz monomer, the raw materials are phenol and amine which undergoes Mannich-like condensation reaction with formalin to form Bz monomer.(5) The natural origin of phenol is abundant while renewable amines are scarce in nature.
Alternative sustainable PBzs based on carbohydrate origin diamines is devised, synthesised and characterised. The materials showed potential as solvent-free sustainable adhesives, as a replacement of petro-origin toxic chemicals based polymers, mainly bisphenol-A (BPA) and/or diamines.
Yusuf Yagci is a full professor of Chemistry at Istanbul Technical University, Turkey. He received his Ph.D. (1979) degree from Liverpool University (UK). He joined Istanbul Technical University in 1980 where he continued all his academic activities till now. . He has published over 600 original research papers and 48 book chapters, and is the inventor and co-inventor of 10 patents. He is the recipient of several awards including The Society of Polymer Science, Japan (SPSJ) International Award (2008), OIC Ministerial COMSTEC International Award (2010), OIC Science & Technology Award (2017), and Fellow of Royal Society of Chemistry (2017), Belgian Polymer Group International Award (2018), Japan Photopolymer Science and Technology Award (2018), Alexander von Humboldt Research Award (2018).
Presentation: New Approaches in Benzoxazine Chemistry for the Synthesis of Advanced Materials
Baris Kiskan1, Yusuf Yagci1, 1 Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
Benzoxazine-based phenolic thermosets offer low water absorption, high char yield, resistance against flame, high modulus, high strength, high glass transition temperatures, chemical resistance, long shelf life etc. [1] Hence, the field of benzoxazine chemistry has been significant advance during the last years. Many different benzoxazines were synthesized and used in high performance thermosetting applications. Indeed, this area is getting more active to meet the actual needs of the industry. Thus, increasing number of papers, patents has been published and the citation pool of this subject is growing rapidly.
Recently, researchers recognized the potency of benzoxazine chemistry to design new polymers that can be considered as advanced materials for unconventional uses. Several research papers have been accumulated about self-healing polybenzoxazines, porous benzoxazine polymers, smart coatings, batteries, electrochromic materials, shape memory polybenzoxazines and superhydrophobic surfaces. [2] Moreover, the reactive nature of benzoxazine monomers allowed researchers to combine polybenzoxazines with other polymers and compounds. For example, the reaction of elemental sulfur and benzoxazine is an emerging area since benzoxazines could be considered as monomers for inverse vulcanization process. [3] The curing of benzoxazine and inverse vulcanization take place simultaneously producing copolymer with high sulfur content. The appealing part of this strategy is its simplicity and low cost of the chemicals can be converted into advanced materials in one-pot and the curing temperatures of benzoxazines reduce depending on the sulfur content. As well known, curing of benzoxazines require high temperatures such as 250 °C and such temperatures can be considered as a drawback for these materials in term of energy consumption and processibility. Thus, reducing the cure temperatures are critical in benzoxazine chemistry. As a solution for the mentioned issue, we have applied various approaches to lower cure temperature successfully and different levels of success was observed for classical benzoxazines. [4] In this presentation an overview is presented about polybenzoxazines highlighting those recent advances for advanced applications ranging from self-healing materials, sulfur-benzoxazine chemistry and reducing cure temperatures of benzoxazines.
[1] N.N. Ghosh, B. Kiskan, Y. Yagci, Prog. Polym. Sci. 32 (2007) 1344-1391
[2] B. Kiskan, React. Funct. Polym. 129 (2018) 76-88
[3] M. Arslan, B.Kiskan, Y. Yagci, Macromolecules 49 (2016) 767-773
[4] A. Kocaarslan, B. Kiskan, Y. Yagci, Polymer 122 (2017) 340-346