Cellulose nanocrystals (CNCs) have attracted much interest as a nucleating and reinforcing agent for poly-L-(lactid acid) (PLLA). However, the processing route to incorporate CNCs into PLLA matrices CNC content strong impact on efficiency of cellulose nanofillers (CNs). In present work, single melt-processing mode using poly(ethylene glycol) (PEG) carrier aminated (Am-CNCs), prepared via period...

Abstract Herein, we report the physicochemical, thermal, mechanical and biological characteristics, including bioactivity, biodegradation cytocompatibility of additive manufacturing-enabled novel nanocomposite scaffolds. The scaffolds comprise a blend polylactic acid (PLA) poly-?-caprolactone (PCL) reinforced with halloysite nanotubes (HNTs). nanoengineered filaments were developed by melt blen...

Polylactic acid (PLA) was melt-blended with epoxy resin to study the effects of reaction on mechanical and thermal properties PLA. The addition 0.5% (wt/wt) PLA increased maximum tensile strength (57.5 MPa) 67 MPa, whereas 20% improved elongation at break 12%, due crosslinking caused by reaction. morphology PLA/epoxy blends showed nanoparticle dispersion in matrix that presented a smooth fractu...

A diacid monomer was synthesized by the condensation of L-tryptophan amino acid and pyromellitic dianhydride (PMDA). The diacid was utilized for the synthesis of three types of poly(amide-imide)s (PAIs) using three different kinds of diamines. The synthesized monomer and PAIs were characterized using FT-IR, 1H-NMR and 13C-NMR spectroscopies and the PAIs were also used ...

Membrane separation is known as an efficient technique for the oily wastewater treatment. Therefore, in the present study, sulfonated poly (ether ether ketone) (SPEEK) was introduced into the polysulfone (PSF) solution in order to enhance the hydrophilicity and the membrane structure for the oil–water separation. The hollow fiber membranes were fabricated via a phase-inversion process. The memb...

Volumetrically significant melt production requires crustal temperatures above approximately 800 °C. At the grain scale, the former presence of melt may be inferred based on various microstructures, particularly pseudomorphs of melt pores and grain-boundary melt films. In residual migmatites and granulites, evidence of melt-extraction pathways at outcrop scale is recorded by crystallized produc...

in the present study, floating drug delivery beads (fdds) were prepared with sodium alginate/ starch blend as a matrix, sodium hydrogen carbonate as a pore forming agent, methyl cellulose as a binder and barium chloride solution as a hardening agent. in order to prepare the beads with different porosity and morphology the ratio between pore forming agent to polymer blend and ratio of the consti...