This work presents the synthesis of polyallylamine (PAl) particles starting from allylamine using resistive-inductive electrical glow discharges. PAl particles obtained directly from allylamine had not been reported before, only in combination with other components. PAl has a great number of applications as a biomaterial, due among other things to its great amine content. The particles were synthesized with a spherical profile with diameter in the 47-2900 nm range and were eroded with an Argon beam in a X-ray photoelectron spectrometer to calculate the amine content inside. Primary (4%-10%), secondary (38%-49%), tertiary (7%-31%), and unsaturated (22%-41%) amines were found in the particles as a function of the power of synthesis. Analyzing from the surface to the interior of the particles, the results showed that secondary amines slightly reduce, and tertiary amines increase. The electric conductivity of the particles was calculated as a function of temperature in the 10 À8 -10 À4 S/m interval with a semiconductor behavior increasing as the diameter reduces.The electrical properties are important in the application of these particles in the central nervous system.

This work presents a study on the formation of hybrid electrospun fibers of polylactic acid (PLA) with insoluble polypyrrole (PPy) particles inside with the objective to prepare ultrahydrophobic fibers for biomedical applications. Krebs-Ringer and phosphate-buffered saline solutions were used as test solutions of human fluids. The PPy particles were synthesized by plasma with diameter in the 60-1000 nm range and were suspended in a PLA-chloroform solution with a PPy/PLA = 0.027 mass ratio. PLA fibers with PPy particles inside were formed electrospinning this suspension obtaining diameters in the 0.12-9.0 µm range with average between 1.65 and 1.85 µm. Contact angles of the fibers with the test solutions were measured in the 113°-147° interval, most of them in the ultrahydrophobic (120°-150°) region. The lowest angles were obtained with particles synthesized at the lowest power (20 W) and were like those obtained on PLA fibers. The highest angles were measured on the fibers with the particles synthesized at the highest synthesis power (100 W), with difference up to 15°. This difference in the angles was correlated with the resonant ≈ C ≈ groups of the particles through the fiber ultraviolet absorption.

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