A5082235952- Polymer composites and self-healing
- Innovative concrete reinforcement materials
- ZnO doping and properties
- biodegradable polymer synthesis and properties
- Innovations in Concrete and Construction Materials
- Electrospun Nanofibers in Biomedical Applications
- Effects of Vibration on Health
- Aluminum Alloy Microstructure Properties
- Civil and Geotechnical Engineering Research
- Epoxy Resin Curing Processes
- Catalytic Processes in Materials Science
- Color perception and design
- Polymer Surface Interaction Studies
- Organic Electronics and Photovoltaics
- Thin-Film Transistor Technologies
- Organic Light-Emitting Diodes Research
- Photopolymerization techniques and applications
- Grouting, Rheology, and Soil Mechanics
- Metal and Thin Film Mechanics
- Flame retardant materials and properties
- Semiconductor materials and devices
- Conducting polymers and applications
- Silicone and Siloxane Chemistry
- Photochromic and Fluorescence Chemistry
- Ergonomics and Musculoskeletal Disorders
Texas A&M University
2024
Gyeongsang National University
2019-2021
Hanyang University
2006
Degradable layer-by-layer (LbL) polymeric coatings have distinct advantages over traditional biomedical due to their precision of assembly, versatile inclusion bioactive molecules, and conformality the complex architectures implantable devices. However, controlling degradation rate while achieving biocompatibility has remained a challenge. This work employs polyphosphazenes as promising candidates for film assembly inherent biocompatibility, tunability chemical composition, buffering...
The history of polyurethane is relatively shorter compared to that the other polymers, though its importance has grown rapidly. Due unique properties, polyurethanes are widely applied in various fields. In particular, auto-motive industry one important application To date, polyols and isocyanates used generally petrochemical origin. Recently, owing oil crisis, legislation, growing awareness towards envi-ronmental preservation, demand for more sustainable eco-friendly raw materials increased....
The intrinsic reversibility of dynamic covalent bonding, such as the furan-maleimide Diels-Alder (DA) cycloaddition reactions, enables reprocessable, self-healing polymer materials that can be reconfigured via mechanism solid-state plasticity. In this work, temperature-dependent exchange rates stereochemically distinct endo and exo DA bonds are leveraged to achieve tunable, temperature- stress-activated shape morphing in (DAP) networks. Through thermal annealing, ≈35% isomers converted neat...
4,4′-Methylenebis(2-chlorobenzenamine) (MOCA)-free fast curing polyurethanes were prepared. In this study, the processibility of a polyurethane system was characterized by assessing pot life. The obtained life 6-8 s, indicating that prepolymer-curative is appropriate for ribbon flow casting. influence NCO index on viscosity and mechanical properties evaluated. viscosity, tensile strength, tear hardness as-prepared showed an increasing trend, with increase in index, whereas elongation at...
Abstract Considering the current environmental issues with petro‐polymers, castor oil is a promising green alternative to polyols be used as main raw material for polyurethane. However, basic information regarding processability of oil‐based polyol (CP) such its miscibility in different solvents still elusive. Herein we have investigated phase equilibria and surface tension various CP solutions using thermo‐optical analysis pendent drop method, respectively. The modified double lattice (MDL)...
폐석고(CaSO₄) 및 탄산칼슘(CaCO₃)을 이용하여 poly(butylene adipate-co-terephthalate)(PBAT) 복합체를 용융혼합으로 제조한 뒤 비교하였다. 석고와 탄산칼슘은 Ca<SUP>2+</SUP> 양이온을 동일하게 포함하지만 다른 크기의 음이온 즉, 각각 SO₄<SUP>2-</SUP>, CO₃<SUP>2-</SUP>을 함유하고 있다. Fajans' rule에 따르면 CaCO₃는 이온성이 더 큰 반면, CaSO₄는 편극성이 크다. 석고는 탄산칼슘에 비해 크기 때문에 filler-matrix간 정전기적 상호작용에 의해 PBAT 내에 분산이 잘 되었다. 석고/PBAT 복합체는 충전제-고분자 함량 20:80의 비율에서 탄산칼슘/PBAT 복합체 대비 낮은 인장강도와 높은 연신율 값을 나타냈다. Polylactic acid(PLA)를 첨가함에 따라 석고/PLA/PBAT 연신율이 향상했지만 탄산칼슘/PLA/PBAT 복합체의 경우에는 PLA의 첨가에 따른...
Herein, we have attempted to recycle the waste gypsum be used as filler material in polymer composite. In this regard, aqueous dispersion of was ultrasonicated for varying time duration (10, 30, and 60 min), dried fillers develop corresponding EPDM composites. As per mechanical performance (i.e., tensile strength elongation at break), obtained after ultrasonication min U-60 gypsum) found best performing compared other samples, commercial carbon black, another surface treated sample. The...
Abstract not Available.
Abstract not Available.