Synthesis of iron oxide nanoparticles by the recently developed green approach is extremely promising because its non-toxicity and environmentally friendly behavior. In this study, nano scaled particles (α-Fe2O3) were synthesized from hexahydrate ferric chloride (FeCl3.6H2O) with addition papaya (Carica papaya) leaf extract under atmospheric conditions. The synthesis was confirmed systematic characterization using FTIR, XRD, FESEM, EDX TGA studies. removal efficiency remazol yellow RR dye as...

Tannins are found in most of the species throughout plant kingdom, where their functions to protect against predation and might help regulating growth. There two major groups tannins, i.e., hydrolyzable condensed tannins. The tannins being used as important effective chemicals for tanning animal hides leather processing industry since beginning industry. Additionally, have been using mineral absorption protein precipitation purposes 1960s. These also iron gall ink production, adhesive...

Abstract The application of citric acid and glycerol as natural binder was investigated for the manufacturing jute stick particleboard in this study. effects content (0–30 wt%), mixture (ratio CA–G), pressing temperatures on properties were investigated. Citric acid-bonded had good mechanical dimensional stability when concentration 20 wt% at temperature 200 °C. By addition (40/60), further increased. modulus rupture (MOR) thickness swelling (TS) values CA–G (40/60) bonded 19.67 N/mm 2 9%,...

The engineering of bionanointerfaces using stimuli-responsive polymers offers a new dimension in the design novel bioelectronic interfaces. integration electrode surfaces with molecular cues provides direct control and ability to switch tune physical chemical properties interfaces various biodevices. Here, we report dual-responsive biointerface employing positively responding dual-switchable polymer, poly(NIPAAm-co-DEAEMA)-b-HEAAm, regulate enzyme-based bioelectrocatalysis. interface...

Abstract This study investigated the effects of processing parameters, namely particle mixing ratios, press temperatures, and time for manufacturing jute stick binderless particleboard (JBPB). Different ratios fine coarse particles, temperature (160 to 240 °C) (4 10 min) were used JBPB fabrication with a target density 0.9 g/cm 3 . The dimensional stability mechanical properties determined according Japanese Industrial Standard JIS A 5908 (2003). result shows that most favorable pressing...

A stimuli-responsive homopolymer poly(ILBr) is fabricated via a "two-phase" atom transfer radical polymerization (ATRP) process, where ILBr stands for the reactive ionic liquid surfactant, 1-[11-acryloylundecyl]-3-methyl-imidazolium bromide. An extraordinarily wide molecular weight distribution (PDI = 6.0) was obtained by introducing initiator (4-bromomethyl methyl benzoate) in heterogeneous two-phase process. The of characterized size-exclusion chromatography (SEC). resulting found to be...

A study was conducted on coconut palm (Cocos nucifera) stem of Khulna region in Bangladesh. Important physical and mechanical properties were studied for 40-year-old tree. The test done at different height positions (i.e., top, middle bottom) lateral core periphery). average air dry oven density 400 460 kg/m3, respectively. MOE MOR values conditions 2374 2633 N/mm2 27.30 30.44 N/mm2. compression strength parallel to grain perpendicular 12.41 12.85 9.28 9.64 N/mm2, There is a possibility use...

Functionalization of indigenous materials improves inherent physicochemical properties that depend mainly on their fabrication techniques. Here, pH triggered biocomposites using different proportions kaolinite and chitosan were fabricated. It was revealed the formed in 1M acetic acid stabilized after dropwise addition mixture solution 3M NaOH. Binding at interface through functional groups studied Fourier transform infrared (FT-IR) spectroscopy dynamic light scattering (DLS). The average...

Nanofibers of the composite alginate (Alg) and carbon nanotube (CNT) were prepared using electrospinning method out aqueous solutions. Scanning electron microscopy (SEM), transmission (TEM), mechanical measurement, electrical conductivity done to characterize Alg/CNT nanofibers morphology properties. The SEM TEM images show CNT be well incorporated along nanofibers. study shows that introduction results in improvement tensile strength Alg matrix. composites could potentially supply useful...

Advanced engineering of naturally occurring materials opens new doors in nanoscience and nanotechnology for the separation and/or removal environmental hazards. Here, a series nanocomposites containing kaolinite chitosan varying range 20 to 80% (w/w) were used adsorptive reactive textile dye, Remazol Red, from an aqueous solution. Batch experiments carried out investigate effects pH, contact time, initial dye concentration on adsorption capacity. Nanocomposites 20% (w/w), i.e., NK80C20,...

Functionalization of indigenous materials improves inherent physicochemical properties that depend mainly on their fabrication techniques. Here, pH triggered biocomposites using different proportions kaolinite and chitosan were fabricated. It was revealed the formed in 1M acetic acid stabilized after dropwise addition mixture solution 3M NaOH. Binding at interface through functional groups studied Fourier transform infrared (FT-IR) spectroscopy dynamic light scattering (DLS). The average...

In this study, cross-bonded self-binding and bone glue-bonded particleboards were manufactured from sugarcane (Saccharum officinarum L.) bagasse with different pre-treatments of particles. Six types panels (a composite material made by combining fibers adhesives) without glue. The physical, mechanical, thermal properties the examined according to standards. Fourier Transform Infrared (FTIR) spectroscopy thermogravimetric analysis (TG) performed investigate changes in chemical bonds stability...

Dynamic mechanical analysis (DMA) was used to investigate the viscoelastic behaviour of four species wood, Scots pine, Gmelina, Obeche and Alstonia. Three frequencies (0.1, 1.0 10 Hz) were over a temperature range −150°C +150°C. All wood showed tan δ peaks corresponding with secondary relaxations in expected range. The low (γ peak) seen at −115°C −83°C, differing between frequency. β relating hemicellulose association water molecules observed, two locations for pine three hardwoods. α peak...

This experiment was carried out to analyze the effects of CCB (chromate-copper-boron) preservative treatment on physical and mechanical properties Albizia richardiana wood using dipping method. Retention maximum at 8% concentration preservatives. Based retention this concentration, treated were examined. The density untreated A. 521 kg/m3. It changed 542 kg/m3 treatment. increase in by 2.30% for significant. On other hand, modulus rupture (MOR) increased significantly from 93 107 N/mm2 wood....

Natural decay resistance of two fast growing timber species, Acacia auriculiformis Cunn. ex. Benth. and Dalbergia sissoo Roxb. grown in Bangladesh was evaluated by adopting an accelerated test method. The wood specimens were exposed to a white rot fungus, Schizophyllum communie for 12 weeks. natural determined the weight loss percentage tested specimens. losses found 2.0% 4.37% heartwood, 22.19% 13.61% sapwood A. D. sissoo, respectively. In both significantly higher than heartwood. This...

Nanostructured metal oxide particles with diversified morphologies are in high demand nanotechnology. The particle size, shape, and overall geometry mainly depend on the fabrication method. This study reports synthesis of zinc nanoparticles (ZnO NPs) from nitrate hexahydrate [Zn(NO3)2.6H2O] precursor aqueous media at 65 °C by using lactose cow milk as a reducing agent regulating pH 6 to 10. UV–visible absorption gave maximum absorbance (λmax) 371–375 nm ethanol for localized surface plasmon...

Abstract In the context of anti-cellular catalytic permutations, development thermally-induced nanotechnology is great importance. this study, iron oxides (Fe 2 O 3 ) decorated silver (Ag) core–shell nanocomposite was prepared using a green thermal decomposition process without any additional chemicals. The characterized for its composition, phase interactions, morphology, and stability spectroscopic, thermogravimetric, microscopic techniques. resultant were also investigated against...