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2020 Fall Graphical Abstracts Division of Polymer Chemistry (POLY) Graphical Abstracts Submitted for the 260th ACS National Virtual Meeting & Exposition August 17 - 20, 2020 Table of Contents [click on a session link to abstracts] Session General Topics: New Synthesis and Characterization of Polymers Industrial Innovations in Polymer Science Nuclear Magnetic Resonance of Materials Entrepreneurial Polymer Chemistry: From the Lab to Start-Up Circular Economy of Polymers Silicon based Hybrid Materials for Today, Tomorrow and the Future Additive Manufacturing: From Molecules to Marketplace ACS Macro Letters/Biomacromolecules/Macromolecules Young Investigator Award Industrial Polymer Scientist Award in honor of James Wang DSM Graduate Student Award Mark Scholars Award in honor of Luis Campos POLY/PMSE Plenary Lecture & Awards Reception Note: ACS does not own copyrights to the individual abstracts. For permission, please contact the author(s) of the abstract. POLY 1: Supramacromolecular-based polymeric nanoparticles for drug delivery Ruihan Li, [email protected], Xuesong Li, Jonathan Barnes. Chemistry, Washington University, Saint Louis, Missouri, United States Biocompatible and biodegradable polymeric nanoparticles are candidates for non-toxic drug delivery. For some traditional drug delivery platforms, drug molecules are covalently linked onto the polymer backbone, which may cause inefficient drug release and different modes of drug action when released in vitro/vivo. To overcome the problem, our group has developed a series of norbornene-functionalized monomers, which can be converted to macromolecules using ring-opening metathesis polymerization (ROMP) to form a supra-macromolecular based drug delivery system. Each monomer has its own function, such as increasing water solubility, destabilizing cell membranes, precisely loading drugs, etc. In my presentation, I will discuss two drug delivery platforms that our group is currently investigating. The first platform consists of a linear block copolymer that can load three or more kinds of hydrophobic drugs simultaneously. After crosslinking non-covalently, the resulting water-soluble polymeric nanoparticles can destabilize cancer or bacteria cell membranes and then sustainably release drugs. The second platform is composed of a novel water-soluble star polymer that is synthesized via a core-first approach by grafting from a γ-Cyclodextrin multifunctional initiator core. This star polymer can work as a water-soluble host for hydrophobic drugs, and can also form well-ordered, highly crystalline solid-state materials. I will include in my presentation the syntheses and characterization of these two platforms, and the corresponding drug release kinetics and bio-efficacy. 1 POLY 2: Use of high throughput methods in the development of synthetic hair conditioning polymers Thomas H. Kalantar1, [email protected], Mladen Ladika1, Tatiana V. Drovetskaya2, Adam L. Safir3, Steven Zong4, Xinnan Zhang5, Susan L. Jordan6. (1) Herbert D. Doan R&D Center, The Dow Chemical Company, Midland, Michigan, United States (2) BASF Corporation, Tarrytown, New York, United States (3) Zymergen, Berkeley, California, United States (4) Zymergen, Inc., Emeryville, California, United States (5) Relepsa, Inc., Redwood City, California, United States (6) Dupont Nutrition and Biosciences, Wilmington, Delaware, United States Cationic conditioning polymers have a role as aids for depositing benefit agents such as silicone and are used in shampoo formulations to provide improved combing properties, feel, and look. The objective of this work was to develop high performance synthetic polymeric conditioning agents that exhibit conditioning performance as good as, or better than, the current commercially available polymers. We describe the application of high throughput methods to identify high performance synthetic hair conditioning polymers through employing a high throughput combinatorial method for polymer synthesis and screening to prepare hundreds of cationic polymer candidates. Shampoo formulations were then formulated with these polymers and hair tresses were treated with these formulations and tested via a parallel automated wet combing method. Three high performing polymer candidates were identified for preparation on a larger scale and evaluated via a panel study. A (3- acrylamidopropyl)trimethylammonium chloride (APTAC)–vinyl monomer- based cationic polymer is shown to exhibit hair conditioning efficiency equal to or better than that of a benchmark high performance cellulose ether-based polymer, Polyquaternium-67. Silicone deposition onto hair from shampoo formulations containing conditioning polymers. 2 POLY 3: Electrochemical polymerization of microgels with and without core-shell support Nabila Yasmeen1, [email protected], Piyush Sharma1, Krzysztof Noworyta1, Jakub Kalecki1, Wlodzimierz kutner1,2. (1) Institute of Physical Chemistry ,Polish Academy of sciences, Warsaw, Poland (2) Department of Physical Chemistry of Supramolecular Complexes, Cardinal Stefan Wyszynski University, Warsaw, Poland, WARSAW, POLAND, Poland Aqueous microgels, due to their biocompatibility, biodegradability, and stimuli responsiveness to temperature, pH, ionic strength, and solvent composition, have attracted attention as potential smart microdevices. In this study, a novel and greener approach for the polymerization of three-dimensional cross-linked macromolecular materials i.e., electrochemical bulk polymerization in an aqueous system has been introduced. In an electrochemical approach, the gelation is performed using the N-isopropyl acrylamide NIPAM, methacrylic acid MAA main monomers and the N,N'-methylenebisacrylamide BIS cross- linking monomer at room temperature. Free radicals are generated by adjusting the potential applied, thus initiating the chain growth in the absence of any additives that can be harmful to future biomedical applications of the resulting microgels. Moreover, the effort has been made to prepare microgel electrochemically with and without core-shell support. The detailed characterization for obtained aqueous microgel has been done by using techniques such as using techniques, such as scanning electron microscopy (SEM), Brunauer-Emmet-Teller (BET) surface analysis, Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric analysis (TGA), laser diffraction microscopy (LDM), and Nuclear magnetic resonance spectroscopy (NMR). 3 POLY 4: Mimicking PANI using phenoxazine and carbazole based polymer for biosensor applications Mohammed N. Almtiri, [email protected], Colleen Scott. Chemistry, Mississippi State University, Starkville, Mississippi, United States Conjugated polymers, characterized by a backbone of alternating single and double bonds, are effective conductors of electricity. Due to their beneficial electrochemical and photophysical properties, conjugated polymers have been used in artificial muscles, fabrication of electronic devices, solar energy conversion, rechargeable batteries, and even biosensors. Our group has been focusing on mimicking polyaniline, a conjugated polymer that has captured the interest of the scientific community due to its electrochemical ability as a conducting polymer that could replace usage of rare transition metals in devices. Phenoxazine and carbazole were used as starting materials, both excellent conductors suitable for biosensor applications due to their conjugation of electrons. Phenoxazine and carbazole are conjugated, polyaromatic, heterocyclic compounds that are commonly found in dyes, naturally-occurring antibiotics, and anti-cancer agents. Our polymer was synthesized as a step-growth polymerization with p-phenylenediamine as the co-monomer via a Buchwald/Hartwig reaction. The electrochemical measurement, such as cyclic voltammetry, shows high electrochemical stability of emeraldine salt, which is a doped form of phenoxazine-based polymer. Finally, we present the comparison of electrochemical properties and morphology of polyphenoxazine doped film using a variety of dopants such as Polystyrene sulfonic acid(PSS), trifluoroacetic acid (TFA), and camphorsulfonic acid (CSA). 4 POLY 5: Local dynamics of thermoresponsive polymers at cellulose nanocrystal interfaces Huyen Vu1, [email protected], Jeremiah Woodcock2, Ajay Krishnamurthy2, Jan Obrzut2, Jeffrey Gilman2, Edward B. Coughlin1. (1) Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts, United States (2) NIST, Gaithersburg, Maryland, United States Self-assembled films of cellulose nanocrystals (CNCs) are ideal for advanced material applications requiring high toughness as their helicoidal structure effectively dissipate impact energy. However, the hydrophilic nature of CNCs and the layer of water surrounding them can hinder interfacial adhesion between polymer-CNCs interfaces and the effectiveness of stress transfer. Studying the role of water at these interfaces is vital to understanding how polymer dynamics translate to macroscopic mechanical properties. By varying the humidity and temperature, water content can be controlled to tune polymer mobility. In an aqueous solution, poly(diethylene glycol methyl methacrylate) (PMEO2MA) has a lower critical solution temperature of 26 oC where water molecules are excluded from the polymer above this critical temperature. Fluorescence lifetime imaging microscopy (FLIM) was used to probe polymer confinement and water exclusion at model polymer-CNCs interfaces. Incorporating a rhodamine-based (RhB) dye as a water sensor into the polymer-CNCs
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