A5068541370- biodegradable polymer synthesis and properties
- Microplastics and Plastic Pollution
- Advanced Cellulose Research Studies
- Electrospun Nanofibers in Biomedical Applications
- Nanocomposite Films for Food Packaging
- Polymer composites and self-healing
- Recycling and Waste Management Techniques
- Advanced Sensor and Energy Harvesting Materials
- Polymer Surface Interaction Studies
- Hydrogels: synthesis, properties, applications
- Natural Fiber Reinforced Composites
- Polymer crystallization and properties
- Marine Biology and Environmental Chemistry
- Effects and risks of endocrine disrupting chemicals
- Liquid Crystal Research Advancements
- Supramolecular Self-Assembly in Materials
- Additive Manufacturing and 3D Printing Technologies
- Fiber-reinforced polymer composites
- Advanced Materials and Mechanics
- Polymer Nanocomposites and Properties
- Silk-based biomaterials and applications
- Catalysis for Biomass Conversion
- Conducting polymers and applications
- Polydiacetylene-based materials and applications
- Synthesis and properties of polymers
Inha University
2023-2025
Korea University
2024
Korea Research Institute of Chemical Technology
2016-2024
Sogang University
2024
Korea University of Science and Technology
2017-2023
Government of the Republic of Korea
2018-2021
Ulsan College
2018-2021
Green Chemistry
2018
Korea Advanced Institute of Science and Technology
2017
Pohang University of Science and Technology
2013-2015
The most important properties of self-healing polymers are efficient recovery at room temperature and prolonged durability. However, these two characteristics contradictory, making it difficult to optimize them simultaneously. Herein, a transparent easily processable thermoplastic polyurethane (TPU) with the highest reported tensile strength toughness (6.8 MPa 26.9 MJ m-3 , respectively) is prepared. This TPU superior contemporary room-temperature self-healable materials conveniently heals...
Hydrogel systems based on cross-linked polymeric materials which could provide both adhesion and cohesion in wet environment have been considered as a promising formulation of tissue adhesives. Inspired by marine mussel adhesion, many researchers tried to exploit the 3,4-dihydroxyphenylalanine (DOPA) molecule cross-linking mediator synthetic polymer-based hydrogels is known be able achieve cohesive hardening well adhesive bonding with diverse surfaces. Beside DOPA residue, composition other...
Self-repairable materials strive to emulate curable and resilient biological tissue; however, their performance is currently insufficient for commercialization purposes because mending toughening are mutually exclusive. Herein, we report a carbonate-type thermoplastic polyurethane elastomer that self-heals at 35 °C exhibits tensile strength of 43 MPa; this as strong the soles used in footwear. Distinctively, it has abundant carbonyl groups soft-segments fully amorphous with negligible phase...
Reversible boronic ester-based polymers/hydrogels achieve cutting-edge biomedical applications including drug delivery, adhesion, bioimplants, healthcare monitoring by self-healing, injectability, biocompatibility, multi-responsiveness to stimuli.
The demand for face masks is increasing exponentially due to the coronavirus pandemic and issues associated with airborne particulate matter (PM). However, both conventional electrostatic- nanosieve-based mask filters are single-use not degradable or recyclable, which creates serious waste problems. In addition, former loses function under humid conditions, while latter operates a significant air-pressure drop suffers from relatively fast pore blockage. Herein, biodegradable,...
Aluminum-coated polypropylene films are commonly used in food packaging because aluminum is a great gas barrier. However, recycling these not economically feasible. In addition, their end-of-life incineration generates harmful alumina-based particulate matter. this study, coating layers with excellent gas-barrier properties assembled on through layer-by-layer (LbL) deposition of biorenewable nanocellulose and nanochitin. The significantly reduce the transmission oxygen water vapors, two...
Self-healing polymeric materials, which can repair physical damage, offer promising prospects for protective applications across various industries. Although prolonged durability and resource conservation are key advantages, focusing solely on mechanical recovery may limit the market potential of these materials. The unique properties self-healing polymers, such as interfacial reduction, seamless connection lines, temperature/pressure responses, phase transitions, enable a multitude...
The first direct probing of the nanomechanics cation–π interactions in aqueous media was accomplished by using a surface forces apparatus with complementary theoretical simulations. tetraethylammonium (TEA) ion breaks adhesion between poly-L-tryptophan (PTrp) and poly-L-lysine (PLL) 100 times higher sensitivity relative to K+ (PS=polystyrene, PTyr=poly-L-tyrosine, ACh=acetylcholine). As service our authors readers, this journal provides supporting information supplied authors. Such materials...
We describe robustly anchored triblock copolymers that adopt loop conformations on surfaces and endow them with unprecedented lubricating antifouling properties. The triblocks have two end blocks catechol-anchoring groups a looping poly(ethylene oxide) (PEO) midblock. loops mediate strong steric repulsion between mica surfaces. When sheared at constant speeds of ∼2.5 μm/s, the exhibit an extremely low friction coefficient ∼0.002-0.004 without any signs damage up to pressures ∼2-3 MPa are...
Calcium-mediated cross-linking of alginate improves toughness, resilience and electrolyte desolvation the binder. These improved properties contribute to enhance capacity lifetime Si anode in LIB.
Environmental and health concerns force the search for sustainable super engineering plastics (SEPs) that utilise bio-derived cyclic monomers, e.g. isosorbide instead of restricted petrochemicals. However, previously reported thermosets or thermoplastics rarely offer thermal/mechanical properties, scalability, recycling match those petrochemical SEPs. Here we use a phase transfer catalyst to synthesise an isosorbide-based polymer with high molecular weight >100 kg mol-1, which is...
Abstract Perishable foods at undesired temperatures can generate foodborne illnesses that present significant societal costs. To certify refrigeration succession in a food‐supply chain, flexible, easy‐to‐interpret, damage‐tolerant, and sensitive time‐temperature indicator (TTI) uses self‐healing nanofiber mat is devised. This opaque when refrigerated due to nanofiber‐induced light scattering, but becomes irreversibly transparent room temperature through self‐healing‐induced interfibrillar...
Plastic packaging effectively protects foods from mechanical, microbial, and chemical damage, but oxygen can still permeate these plastics, degrading foods. Improving the gas barrier usually requires metallic or halogenated polymeric coatings; however, both cause environmental concerns coatings block visible light electromagnetic signals. This paper reports a design of highly flexible, radio frequency transparent coating on commercial poly(ethylene terephthalate) (PET) film. Nanoscale...
Food packaging requirements of gas barrier and self-cleaning are satisfied with the use bio-renewable cellulose, chitosan, silica, sunflower oil.
Biodegradable microbeads prepared by reacetylation of chitosan are readily applicable to skin exfoliators as substitutes synthetic polymers with their suitable mechanical properties and high cleansing efficiencies.
Chemo-biological upcycling of poly(ethylene terephthalate) (PET) developed in this study includes the following key steps: chemo-enzymatic PET depolymerization, biotransformation terephthalic acid (TPA) into catechol, and its application as a coating agent. Monomeric units were first produced through glycolysis bis(2-hydroxyethyl) terephthalate (BHET), mono(2-hydroxyethyl) (MHET), oligomers, enzymatic hydrolysis these glycolyzed products using Bacillus subtilis esterase (Bs2Est). Bs2Est...
Abstract Among plastic items, single‐use straws are particularly detrimental to marine ecosystems because such straws, including those made of poly(lactic acid) (PLA), sharp and extremely slowly degradable in the ocean. While paper promising alternatives, they exhibit hydration‐induced swelling even when coated with a non‐degradable coating promote effervescence (fizzing) soft drinks owing their surface heterogeneities. In this study, upgraded straw is poly(butylene succinate) cellulose...