To prepare the molecular composite of poly(p-phenylenetere-phthalamide) (PPTA) and epoxy resin (Epoxy), N-grafted PPTA (PPTA-g-Epoxy) was synthesized from PPTA and Epoxy via metalation of PPTA in a solution of sodium methylsulfinylcarbanion in dimethylsulfoxide. The Characterization of PPTA-g-Epoxy was carried out by IR, TGA, DSC, and X-ray diffraction. Molecular composites were prepared from PPTA-g-Epoxy of more than 100% grafting of Epoxy, epoxy resin and triethylenetetramine as a hardener. The bending modulus of 3.0 GPa and bending strength of 164 MPa were obtained for the molecular composite, and found superior to those of epoxy resin by factors of 1.66 and 1.36, respectively. The reasons for low reinforcing effect are discussed.
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Molecular-level dispersion of rigid-rod sulfonated aromatic polyamides in epoxy resin for extraordinary improvement in both strength and toughness
Preparation and characterization of thiol- and amino-functionalized polysilsesquioxane coated poly( p -phenylenetherephthal amide) fibers and their adsorption properties towards Hg(II)
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