Preparação, caracterização e propriedades de filmes poliméricos com potencial aplicação no recobrimento de sementes

Characterization of low cost orally disintegrating film (ODF)

“…The spectrum of CMC, starch and gelatin alone were similar to previous reported in the literature [15,22,23] . For CMC characteristic band were observed at 1587 cm -1 (stretching of C=O), 1415 cm -1 (CH2 carboxylic groups), 1322 cm -1 (absorption of CH2) e 1051 cm -1 (stretching of C-O), consistent with previous data reported [22] . For gelatin alone, band centered around 3300 cm -1 is mainly due to the extension of the group NH of amide A.…”

Potassium ions release from polysaccharide films

“…In a previous study we analyzed the water vapor permeation in CMC, SA and 1:1 CMC:SA films at different moisture contents and we observed the highest values for the 1:1 mixture. 22 Within the same period of time (55 days), percolation of free potassium in sand achieved ca. 120 mg, with 70% (85 mg) released in the first 10 days (first 5 percolations).…”

“…Also, in a previous study it was demonstrated that the water permeation was higher in 1:1 CMC:SA films than in the pure systems. 22 In addition, the swelling by water is largely favored by the presence of negative charges in polyelectrolyte systems, such as, CMC and SA. 24,25 Considering that the films were obtained from solutions at ca.…”

A Efetividade Da Lei Maria Da Penha Frente Às Políticas Nacionais De Enfrentamento À Violência Contra a Mulher

“…Polímeros podem ser utilizado utilizados no tratamento de sementes associados com o tratamento químico e biológico pois propiciam acréscimo em seu tamanho e peso possibilitando melhor distribuição dos produtos sobre as sementes, redução da variação de temperatura e umidade e agregação de valor as sementes. E um material protetor que reduz os impactos sobre o meio ambiente e saúde do agricultor (OLIVEIRA, et al, 2009).…”