Castor Oil Based Hyperbranched Poly(ester amide)/Polyaniline Nanofiber Nanocomposites as Antistatic Materials

Abstract

Biobased hyperbranched poly(ester amide) (HBPEA)/polyaniline (PAni) nanofiber nanocomposites were prepared by incorporating the as-synthesized PAni nanofiber at varied weight percentages by an ex situ polymerization technique. Fourier transform infrared spectroscopic analyses indicated the interactions of the benzenoid–quinoid moieties of PAni with HBPEA. The transition from liquidlike to solidlike behavior of the nanocomposites with a percolation threshold at 10 wt % nanofiber content was studied using dynamic rheology. The formation of nanofibrous network within the HBPEA matrix as vouched for by TEM study and initial degradation temperature (from 277 to 307 °C) was found to be increased with the increment of nanofiber content. The evaluation of mechanical properties such as tensile strength (7.2–12.25 MPa), elongation at break (88–70%), impact resistance (>100 cm), and scratch hardness (8.5–10 kg) together with the decrease in the sheet resistance (from 107 to 105 Ω/sq) forwarded the epoxy–poly(amido amine) cured nanocomposites as prospective antistatic materials.

Biodegradable tough waterborne hyperbranched polyester/carbon dot nanocomposite: approach towards an eco-friendly material

“…The shear viscosity of them decreased with increasing shear rate showing shear-thinning behavior signifying the formation of threedimensional network structure. 21,37 The shear viscosity also increased drastically with the content of CD over a broad range of shear rates due to the above reasons.…”

“…The viscous and elastic characters of the pristine polyester and nanocomposites before curing are characterized by loss modulus (G″) and storage modulus (G′) respectively. 37,38 The viscoelastic properties of the pristine polyester and nanocomposites were examined by the frequency sweep experiment. G′ and G″ were measured as a function of frequency (1 to 10 s −1 ) under constant temperature (25 °C) and constant stress (20 Pa).…”

A facile approach to fabricate waterborne, nanosized polyaniline‐graft‐(sulfonated polyurethane) as environmental antistatic coating

“…It is known that polymer with (τ 1/2 ) lower than 10 s are considered as antistatic materials, what is more, the shorter the half‐life decay time is, the better the antistatic property will be . These results also indicated that PANI‐ g ‐SWPU coatings can endow the paper with enhanced antistaticity, the as‐prepared coated paper is able to be utilized in the antistatic material field …”

Novel Synthesis and Characterization of Vegetable Oil Derived Corrosion Inhibitors

“…Then castor oil, was added and the mixture was refluxed for 30 minutes at 150 °C . Diethanolamine was added with 10 mol% excess to the methylester formed and refluxed for one and a half hour with continuous stirring under N 2 gas atmosphere [20]. Thus, the synthesis described is however beyond the purpose of our study.…”