Alan MacDiarmid, um Nobel, uma lição de vida!

Abstract

Quadro 1. Relação de prêmios Nobel em Polímeros. Nome Nobel Ano Motivo do recebimento 1 Hermann Staudinger Química 1935 "Por sua descoberta na química macromolecular" Karl Zigler e Giullio Natta Química 1963 "Por sua descoberta no campo da química e tecnologia de altos polímeros." Paul Flory Química 1974 "Por sua fundamental conquista, ambas teóricas experimenta, na físico-química de macromoléculas."

Study the effect of inorganic salts on the chemically polymerized aniline films using quartz crystal microbalance

“…The latter character, in addition to the higher number of the negative charges on the sulfate anions, provides an enhancement of the screening effect of sulfate anions. A similar effect known as Donnan effect has been observed during the synthesis 8 and doping of PANI. 34 Recently Motheo et al 35 have chemically synthesized PANI powder in HCl (0.4-2.51 M) containing LiCl or MgCl 2 .…”

“…The effect of some salts on the properties of PANI was studied by many authors. Mattoso et al 8 have studied the dependence of the molecular weight of PANI during the oxidative polymerization of aniline and of methoxoyaniline in the presence of salts. The presence of LiCl, NaCl, CaCl 2 , and LiNO 3 dissolved in the reaction mixture increases the molecular weight of the polymer produced, whereas dissolved LiF decreases the molecular weight as compared to the polymer obtained when the reaction is carried out in the absence of added neutral salts.…”

Preparation and characterization of castor oil‐based polyurethane/poly(o‐methoxyaniline) blend film

“…2 Accordingly, the poly(o-methoxyaniline) (POMA) has received considerable attention, [3][4][5] since the presence of the o-methoxy group (À ÀOCH 3 ) increases the solubility in various organic solvents, when compared with that of parent PANI, while maintaining similar optical and electronic properties. 6 The conductive forms of PANI, as well as its derivatives, lead to very brittle materials with low mechanical properties, and on account of this reason they are mostly used in blends with common insulating polymers. [7][8][9][10][11][12] In the present work, Polyurethane (PU)/POMA blend films were prepared and morphological, optical, and electrical properties were investigated using FTIR and UV-Vis-NIR spectroscopy and electrical conductivity measurement.…”