A5066846355- biodegradable polymer synthesis and properties
- Microplastics and Plastic Pollution
- Microfluidic and Capillary Electrophoresis Applications
- Carbon dioxide utilization in catalysis
- Advanced Polymer Synthesis and Characterization
- Viral Infectious Diseases and Gene Expression in Insects
- Recycling and Waste Management Techniques
- Microfluidic and Bio-sensing Technologies
- Fiber-reinforced polymer composites
- Flame retardant materials and properties
- Antimicrobial agents and applications
- Synthesis and characterization of novel inorganic/organometallic compounds
- 3D Printing in Biomedical Research
- Synthetic Organic Chemistry Methods
- Dendrimers and Hyperbranched Polymers
- Machine Learning in Materials Science
- Synthesis and properties of polymers
- Polymer crystallization and properties
- Innovative Microfluidic and Catalytic Techniques Innovation
Iowa State University
2022-2025
Abstract Here, low‐energy poly(ethylene terephthalate) (PET) chemical recycling in water: PET copolymers with diethyl 2,5‐dihydroxyterephthalate (DHTE) undergo selective hydrolysis at DHTE sites, autocatalyzed by neighboring group participation, is demonstrated. Liberated oligomeric subchains further hydrolyze until only small molecules remain. Poly(ethylene terephthalate‐ stat ‐2,5‐dihydroxyterephthalate) were synthesized via melt polycondensation and then hydrolyzed 150–200 °C water 0–1...
This paper develops a machine learning methodology for the rapid and robust prediction of glass transition temperature (Tg) polymers targeted application sustainable high-temperature polymers. The framework combines multiple techniques to develop feature set encompassing all relative aspects polymer chemistry, extract explain correlations between features Tg, apply high-throughput predictive model. In this work, we identify chemistry that most impact including parameter related rotational...
Here we report the copolymerization of a C20:1 monounsaturated long-chain α,ω (MULCH) diacid with polyamide-6,6 (PA66) and polyamide-6 (PA6), subsequent derivatizations post-polymerization in swollen- or solid-state. Surprisingly, most...
Abstract Secreted metabolites are an important class of bio‐process analytical technology (PAT) targets that can correlate to cell conditions. However, current strategies for measuring limited discrete measurements, resulting in understanding and ability feedback control strategies. Herein, a continuous metabolite monitoring strategy is demonstrated using single‐use absorbing resonant transducer (SMART) with growth. Polyacrylate shown absorb secreted from living cells containing hydroxyl...
Chemically Recyclable Plastics In article number 2210154, Ting-Han Lee, George Kraus, Eric Cochran, and co-workers report dihydroxyterephthalate (DHTE) as a "Trojan horse" co-unit in poly(ethylene terephthalate) to produce highly recyclable plastics. The DHTE enables chemical recycling via hydrolysis monomers pure water by acting an internal catalyst through neighboring group participation.
Abstract Enzymes sequestered from microbes have demonstrated the ability to readily digest amorphous regions of polyethylene terephthalate (PET) in ambient conditions. Although nascent, enzymatic depolymerization can soon vie for commercialization and provide monomeric feedstock at rates comparable petrochemical repolymerization, achieving coveted goal cradle‐to‐cradle recycling. © 2022 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf Society Industrial Chemistry.
Abstract Secreted metabolites are an important class of bio-process analytical technology (PAT) targets that can correlate to cell condition. However, current strategies for measuring limited discrete measurements, resulting in understanding and ability feedback control strategies. Herein, we demonstrated a continuous metabolite monitoring strategy using single-use absorbing resonant transducer (SMART) with growth. Polyacrylate was shown absorb secreted from living cells containing hydroxyl...
We report the tethering of flame-retardant additives like 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) to backbone a polyamide through trans -3-hexenedioic acid, bioadvantaged derivative muconic acid.
About 20–34 billion poly(ethylene terephthalate) (PET) bottles from the beverage industry leak into aquatic ecosystems annually, necessitating development of urgent strategies to treat waterborne plastic pollution. Inspired by scalability water disinfection infrastructure and protocols, we present a dual depolymerization approach relying on oxidation, followed hydrolysis. Incorporating bioderived monounsaturated C18 diacid (C18:1-DA) counits at low dosages (2–5%) in PET backbone overcomes...
Efforts towards developing biobased chemicals primarily focus on generating molecules chemically analogous to those derived from petroleum. However, the compositional uniqueness of biomass can also be leveraged reinvigorate chemical industry with novel multifunctional molecules. We demonstrate value and potential these new compounds in case Nylon-6,6, a commodity polyamide that suffers poor flame resistance. The conventional route inhibit flammability involves blending polymer additives, an...