The Influence of Impulse Drying on Performances of Papers Containing Cationic Starch and calcium carbonate

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

Paula Maria Mendes (Autor) FEUP; Helena Aguilar Ribeiro (Autor) FEUP; João Alexandre Ranita (Autor) FEUP; Mohamed Belgacem (Autor) Outra; Jacques Silvy (Autor) Outra; Carlos Costa (Autor) FEUP

Revista

Título: Tappi Journal

Vol. 1 Nº 11

Páginas: 10-15

ISSN: 0734-1415

Editora: TAPPI Press

Outras Informações

Abstract (EN): Impulse-dried sheets made with bleached kraft pulps beaten at 25°SR and containing 2% cationic starch showed excellent structural consolidation. In fact, all the mechanical and structural properties except stiffness were enhanced. During impulse pressing, cationic starch handsheets from pulps beaten at 25°SR exhibited less delamination than those made from pulps beaten at 40°SR. Web sticking (to the heated platen press surface) was observed for sheets filled with precipitated calcium carbonate (15% CaCO3).This sticking, was attributed to the presence of calcium, carbonate, which makes the paper sheets have smaller void spaces, leading to the delamination of the paper web.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6