The synthesis and polymerization of a novel diamine monomer, 1,1-(sulfonylbis (4,1-phenylene)) bis (thiourea) (SPT), with various aromatic dianhydrides were carried out. In addition, the fabrication of poly(thiourea-sulfone-imide)s (PTSIs) with noble thermal properties and flame retardancy was conducted. The structures of SPT and polymers were characterized by FT-IR, H NMR, and C NMR spectrosco...

In this study, physical, mechanical, and flammability properties of coconut fiber reinforced polypropylene (PP) composite panels were evaluated. Four levels of the coir fiber content (40, 50, 60, and 70 % based on the composition by weight) were mixed with the PP powder and a coupling agent, 3 wt % maleic anhydride grafted PP (MAPP) powder. The water resistance and the internal bond strength of...

A flame retardant containing phosphorus and nitrogen was synthesized using phytic acid dicyandiamide, it subsequently used to prepare flame-retardant cellulosic paper via an impregnation method. Vertical limiting oxygen index (LOI) were evaluate the retardancy of paper. The modified characterized with Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), X-ray diffraction (XRD)...

In the flame retardancy of biopolymer matrix and natural fibre reinforcement containing green composites, researchers face multiple challenges, such as low thermal stability, candlewick effect fibres compatibility issues. Cellulosic have been shown to char-promoting properties advantageously interact with intumescent systems. this work, melamine-polyphosphate was combined neat or flame-retardan...

Aerogels are synthetic porous materials derived from sol-gel materials in which the liquid component has been replaced with gas to leave intact solid nanostructures without pore collapse. Recently, aerogels based on natural or synthetic polymers, called polymer or organic aerogels, have been widely explored due to their porous structures and unique properties, such as high specific surface area...

One of the most efficient and versatile ways to synthesize polyolefin nanocomposites is the in-situ polymerization of olefins in the presence of nano particles by metallocene catalysts. Metallocene/methylaluminoxane (MAO) catalysts are soluble in hydrocarbons and therefore they can be absorbed perfectly in solution onto the surface of particles or fibers and after addition of ethene or propene ...

Large-scale biomimetic organic/inorganic hybrid nanocoatings with a nacre-like microstructure were prepared via a facile coassembly process. Different from conventional polymer nanocomposites, these nanocoatings contain a high concentration of nanosheets, which can be well aligned along the substrate surface. Moreover, the nanosheets and polymer matrix can be chemically co-cross-linked. As a re...

Fire safety has become a major concern due to the ubiquitous use of polymers. The development flame retardant polymer materials consequently experienced huge growth in market size. New strategies and legislation have also been proposed save lives property. science economics retardancy, fire regulations, new technologies are under permanent evolution. This review paper focuses on revisiting clas...

Abstract The flammability properties of polymers and polymer composites are crucial in ensuring their safe use various applications. development flame-retardant technologies continues to be an active area research improve the fire safety these materials. Recently, ionic liquids have been studied composites. In this concise review, different types that combined with discovered. addition, prepara...