2014
DOI: 10.1590/01047760.201420021434
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Efeitos da sequência de branqueamento na ação de alvejantes óticos em celulose kraft de eucalipto

Abstract: RESUMO:Durante o processo de branqueamento a celulose é tratada com reagentes químicos que, ao se tornarem resíduos na polpa, podem interferir na ação dos alvejantes óticos. Diferentes sequências de branqueamento podem produzir polpas com o mesmo grau de alvura, mas com potenciais diferentes para incremento da brancura por meio da aplicação de alvejantes óticos. Neste trabalho, objetivou-se avaliar a influência da sequência de branqueamento da celulose na eficiência de alvejantes óticos dos tipos dissulfonados… Show more

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“…However, they presented some differences related to ber morphology and will differently affect qualities and possible applications from papers. The indexes are also in agreement with literature and with similar species to those studied [7,26,27]. Eucalyptus, pine, and sisal felting rates can be considered as low, high, and massive, respectively.…”
Section: Resultssupporting
confidence: 90%
“…However, they presented some differences related to ber morphology and will differently affect qualities and possible applications from papers. The indexes are also in agreement with literature and with similar species to those studied [7,26,27]. Eucalyptus, pine, and sisal felting rates can be considered as low, high, and massive, respectively.…”
Section: Resultssupporting
confidence: 90%
“…Some examples of the abundant and common plant fiber sources include wheat straw , cotton , sugar‐cane bagasse , bamboo , sisal , coconut , soybean , banana plant residues , hemp , and wood . Plant fibers have several attractive properties such as their low density, high specific strength, non‐abrasiveness, non‐corrosive nature, ease of separation, and their broad availability at a low cost . In addition, they are completely renewable and can be found with a range in length, aspect ratio, and morphology.…”
Section: Introductionmentioning
confidence: 99%