Polyaniline (PANi)-grafted multiwalled carbon nanotube (MWNT) composite is prepared by a two-step reaction sequence. MWNT is first functionalized with 4-aminobenzoic acid in polyphosphoric acid/phosphorous pentoxide as a ‘‘direct’’ Friedel-Crafts acylation reaction medium. The resultant 4-aminobenzoyl-functionalized MWNT is then treated with aniline using ammonium persulfate/aqueous hydrochlori...

Bitumen’s self-healing capability is critical to the bitumen industry’s sustainable development. This work attempts examine property and fatigue behavior of using waste cooking oil (WCO) polyphosphoric acid (PPA) in modification. Different components WCO were mixed with PPA for initial The linear amplitude sweep (LAS) test was used evaluate modified bitumen. To assess extent healing after a fat...

The mixture of polyaniline (PANi) and PANi grafted multiwalled carbon nanotube (PANi-g-MWNT) was prepared by a two-step reaction sequence. MWNT was first functionalized with 4-aminobenzoic acid via ‘‘direct’’ Firedel-Crafts acylation in polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium to afford 4-aminobenzoyl-functionalized MWNT (AFMWNT). Then, aniline was polymerized via an in sit...

Novel diamidino substituted conformationally restricted derivatives of bis-benzothiazolyl-pyridines and pyrazine were synthesized and their antiproliferative activity against several human cancer cell lines were determinated. The synthetic approach used for preparation of isomeric amidinobenzotiazolyl disubstituted pyridines 3a-3k and pyrazine 3l was achieved by condenzation reaction of commerc...

The mechanical and thermal properties of poly{2,6-diimidazo[4,5-b:4′5′-e] pyridinylene1,4(2,5-dihydroxy) phenylene} (PIPD)-3,3-diaminobenzidine (DAB) fibers were analyzed. Compared to other types of benzimidazole fiber structures and properties, PIPD-DAB is distinguished by a unique combination of strength, tensile modulus, and thermal properties. The PIPD polymer was prepared from 2,3,5,6-tetr...