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Synthesis and characterization of polyesters based on isosorbide/isoidide derived AB-monomers were reported. The homopolymers were prepared respectively by melt polycondensation of isosorbide 2(4-carbomethoxybenzoate), isosorbide 5(4-carbomethoxybenzoate) and isoidide (4-carbomethoxyphenyl ether). The chemical structure and properties of the synthesized polyesters were characterized by proton nuclear...
High thermal conductive graphene reinforced epoxy composites were prepared. The dispersion and interface between epoxy and graphene are improved by Pyrene-end poly(glycidyl methacrylate) (Py-PGMA). Py-PGMA was synthesized by atomic transfer radical polymerization (ATRP) which was absorbed onto graphene by the non-covalent surface functionalization. Additionally, the Py-PGMA content on graphene is...
Two series of aromatic polyimides containing side azobenzene groups have been synthesized by low-temperature solution polycondensation of certain aromatic dianhydrides with aromatic diamines containing preformed side azobenzene groups followed by chemical imidization at 100degC in the presence of pyridine and acetic anhydride. The resulting polyimides were studied by spectral methods (UV, IR) and...
Polyurethanes were prepared from 2,4-toluene diisocyanate and poly-(propylene oxide glycol) and bis-amine propyl polydimethylsiloxane. The physical properties of these polymers were determined using Fourier transform infrared spectroscopy. The thermal properties were investigated through thermogravimetric analysis. The water resistance was determined by calculating water absorption. The blood compatibility...
Brush-like chitosan-g-poly(D,L-lactide) copolymers were synthesized effectively by bulk ring-opening polymerization of D,L-lactide(D,L-LA) using chitosan (CS) as macroinitiator under microwave irradiation. The graft copolymers were characterized by FT IR, 1H NMR, EA, XRD, and TGA. The results showed that the synthesis of the chitosan-g-polylactide copolymer via microwave heating was much faster than...
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