A5003005393- Epoxy Resin Curing Processes
- Synthesis and properties of polymers
- Polymer Nanocomposites and Properties
- Injection Molding Process and Properties
- Adsorption and biosorption for pollutant removal
- Photopolymerization techniques and applications
- Polymer Nanocomposite Synthesis and Irradiation
- Chemical Synthesis and Characterization
- biodegradable polymer synthesis and properties
- Silicone and Siloxane Chemistry
- Electrospun Nanofibers in Biomedical Applications
- Graphene and Nanomaterials Applications
- Hydrogels: synthesis, properties, applications
- Thermal and Kinetic Analysis
- Nanocomposite Films for Food Packaging
- Polymer composites and self-healing
- Tribology and Wear Analysis
- Advanced Polymer Synthesis and Characterization
- Recycling and Waste Management Techniques
- Polymer crystallization and properties
- Nanoplatforms for cancer theranostics
- Analytical Chemistry and Sensors
- Bone Tissue Engineering Materials
- Polymer-Based Agricultural Enhancements
- Nanoparticle-Based Drug Delivery
Association for Language Learning
2024
Office of Atoms for Peace
2007-2013
Case Western Reserve University
2001-2006
Novel shape memory polymers (SMPs) were prepared from benzoxazine-modified epoxy resin. Specimens consisting of aromatic (E), aliphatic (N), Jeffamine D230 (D) and BA-a benzoxazine monomer (B) evaluated. The mole ratio D/B was used as a mixed curing agent for an system with fixed E/N. effects content on the thermal, mechanical properties epoxy-based investigated by differential scanning calorimetry (DSC), dynamic analysis (DMA), flexural test recovery test. results revealed that obtained...
Abstract In this research, the blends between bio-based polybenzoxazine (V-fa) and polycaprolactone (PCL) with different molecular weights (M n ) of 14,000 80,000 Da were prepared at PCL contents varied 80, 90, 95 wt%. γ-Aminopropyltriethoxysilane (KH-550) was used as cross-linking agent. The chemical structures polymer characterized by Fourier Transform Infrared Spectrometer (FT-IR). spectra revealed that hydrogen bonds two polymers observed. Moreover, V-fa cross-linked when KH-550 applied....
Abstract In this research, the polymer blends between bio-based polybenzoxazine (V-fa) and polydimethylsiloxane (PDMS) were synthesized at V-fa:PDMS mass ratios of 1:1, 2:3, 1:2, 1:4. γ-Aminopropyltriethoxysilane (KH550) was used as crosslinking agent. The chemical structure characterized using Fourier Transform Infrared Spectroscopy (FT-IR), which indicated formation specific bonds poly(V-fa) PDMS. disappearance peak corresponding to -OH groups suggested their involvement in coupling two...
Graft copolymers, deproteinized natural rubber-graft-polystyrene (DPNR-g-PS) and rubber-graft-polyacrylonitrile (DPNR-g-PAN), were prepared by the grafting of styrene (St) or acrylonitrile (AN) monomers onto DPNR latex via emulsion copolymerization. Then, ultrafine fully vulcanized powdered rubbers (UFPNRs) produced electron beam irradiation graft copolymers in presence di-trimethylolpropane tetra-acrylate (DTMPTA) as a crosslinking agent and, subsequently, fast spray drying process. The...
This research aimed to scale up the production of starch-based super water absorbent (SWA) and validate practical benefits SWA for agricultural applications. was successfully prepared in an up-scaling by radiation-induced graft polymerization acrylic acid onto cassava starch. Chemical characterization FTIR thermal TGA showed results that differentiated starting materials from SWA, thus confirming effective preparation via polymerization. SEM visibly revealed a highly porous morphology...
ABSTRACT An alternative method to improve the compatibility between poly(lactic acid) (PLA) and cassava starch (CS) is proposed investigated. Admicellar polymerization used modify surface of CS with poly(methyl methacrylate) (PMMA) in order make it more hydrophobic hence compatible PLA. The increased hydrophobicity PMMA modified (MS) validated by contact angle measurement. Results from iodine test, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X‐ray...
This study presented a green, facile and efficient approach for new combination of targeted gold nanohybrids functionalized with folate-hydrophobic-quaternized pullulan delivering hydrophobic camptothecin (CPT-GNHs@FHQ-PUL) to enhance the efficacy, selectivity, safety these systems. New formulations spherical CPT-GNHs@FHQ-PUL obtained by bio-inspired strategy were fully characterized TEM, EDS, DLS, zeta-potential, UV-vis, XRD, ATR-FTIR analyses, showing homogeneous particles size an average...
The volumetric expansion of bisphenol-A and aniline-based benzoxazine (BA-a) has been studied by comparing the room temperature density cured BA-a under different polymerization conditions with amorphous monomer. glass transition temperatures (Tg) at various degrees have investigated differential scanning calorimetry (DSC). conversion were compared respective temperatures. It was found that substantial development Tg occurs low conversion. A fluorinated polybenzoxazine synthesized from...
ABSTRACT In this study, we aimed to modify chitosan (CS) as a novel compatible bio‐based nanofiller for improving the compatibility including thermal and mechanical properties of poly(lactic acid) (PLA). The modification CS with poly(ethylene glycol) methyl ether methacrylate (PEGMA) was done by radiation‐induced graft copolymerization. effects dose rate, irradiation dose, PEGMA concentration on degree grating (DG) were investigated. chemical structure, packing stability, particle...
Due to the increasing demands for improved radiation safety and growing concerns regarding excessive use of plastics, this work aimed develop effective eco-friendly thermal-neutron-shielding materials based on recycled high-density polyethylene (r-HDPE) composites containing varying surface-treated gadolinium oxide (Gd
Ultrafine fully vulcanized powdered natural rubber (UFPNR) has a promising application as renewable toughening modifier in polymer matrices. In this work, the effects of acrylate coagents, which had different amounts functional groups, on properties UFPNR produced by radiation vulcanization and spray-drying was systematically investigated for first time. Dipropylene glycol diacrylate (DPGDA), trimethylol propane trimethaacrylate (TMPTMA), ditrimethylol tetraacrylate (DTMPTA) were used...
This research focuses on developing a new method to fabricate water super-absorbent polymer (SAP) beads via spherification and radiation-assisted polymerization. The effects of parameters such as pH, concentration monomer, presence cassava starch well radiation dose gel fraction swelling ratio were investigated determine an optimum condition. Chemical physical properties the prepared SAP characterized using FTIR, TGA, SEM UTM. Results showed that can be successfully formulated in uniform...
In this research, benzoxazine (BA-a) and diamino polysiloxane (PSX750) blends were prepared at 0–50 wt% of BA-a. The interactions between two polymeric components investigated via a Fourier Transform Infrared Spectrometer (FT-IR). thermal properties the also determined with Dynamic Mechanical Analyzer (DMA) Thermogravimetric (TGA). mechanical shape memory behaviors investigated. FTIR spectra exhibited shift peak from 1672 to range 1634–1637 cm−1, which could be identified as hydrogen bonds...