Synthesis in pilot plant scale and physical properties of sulfonated polystyrene

Autor(es)

Cristiane R. Martins ^[1] ; Giacommo Ruggeri ^[2] ; Marco-A. De Paoli ^[3]

Afiliação do(s) autor(es)

^[1] Universidade Estadual de Campinas. Instituto de Química - Brasil

^[2] Universidade Estadual de Campinas. Instituto de Química - Brasil

^[3] Universidade Estadual de Campinas. Instituto de Química - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 14, n. 5, p. 797-802, 2003-10-00.

Resumo

The homogenous sulfonation of polystyrene was developed in a pilot plant scale producing polymers with different sulfonation degrees (18 to 22 mole % of sulfonated styrene units). The reaction yield depends chiefly on the concentration ratio of acetyl sulfate and polystyrene. The morphological and thermal properties of the sulfonated polystyrene obtained by homogeneous sulfonation were studied by means of scanning electron microscopy, differential scanning calorimetry and thermogravimetry. The glass transition temperature of sulfonated polystyrene increases in relation to pure polystyrene and DCp was evaluated in order to confirm the strong interactions among the ~SO3H groups. (AU)

• Processo FAPESP: 98/12558-4 - Processamento de blendas poliméricas por extrusão reativa e caracterização físico-química: polianilina e poliestireno
• Beneficiário: Cristiane Reis Martins
• Modalidade de apoio: Bolsas no Brasil - Doutorado