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  <titleInfo>
    <title>Nanostructured Films Produced from the Bleached Pinus sp. Kraft Pulp</title>
  </titleInfo>
  <name type="personal">
    <namePart>Viana, Lívia Cássia</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Muñiz, Graciela Ines Bolzon de</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Magalhães, Washington Luiz Esteves</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Andrade, Alan Sulato de</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Nisgoski, Silvana</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Potulski, Daniele Cristina</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
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  <genre authority="marc">periodical</genre>
  <genre authority="marc">abstract or summary</genre>
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  <abstract>

ABSTRACT

This study investigates the physical and mechanical properties of nanostructured films produced
from Pinus sp. kraft pulp. To obtain the nanocellulose, the bleached kraft pulp was submitted
to six different grinding regimes: two, five, ten, 20, 30, and 40 passes through the grinder. The
influence of the number of passes was evaluated through the films’ physical and mechanical
properties. The results show that the nanofibers reduced the thickness and considerably increased
the density values of the fabricated films. The tensile strength increased more than 300% and the
burst index was ten times higher in relation to normal papers. The more compact structure and
lower porosity caused by the larger contact surface between nanofibers in the nanostructured
films resulted in higher values of density, tensile strength, and burst resistance.

Keywords: nanocellulose, grinder, mechanical properties, density, crystallinity index.





Filmes Nanoestruturados Produzidos a partir de Polpa Kraft Branqueada de Pinus sp.

RESUMO

Este trabalho investiga as propriedades físicas e mecânicas de filmes nanoestruturados produzidos
a partir da polpa kraft branqueada de Pinus sp. Para obter a nanocelulose, a polpa kraft branqueada
foi submetida a seis diferentes intensidades de desfibrilação pelo moinho: dois, cinco, dez, 20, 30
e 40 passes. A influência do número de passes foi avaliada por meio das propriedades físicas e
mecânicas dos filmes. Os resultados indicam que a presença de nanofibrilas reduziu a espessura e
aumentou consideravelmente os valores de densidade dos filmes fabricados. Observou-se aumento
da resistência à tração de 300% e o índice de ruptura foi dez vezes maior em relação aos papéis
normais. A estrutura mais compacta e a menor porosidade causada pela maior superfície de
contato entre as nanofibrilas nos filmes resultaram em maiores valores de densidade, resistência
à tração e resistência à ruptura.

Palavras-chave: nanocelulose, moinho, propriedades mecânicas, densidade, índice de cristalinidade.</abstract>
  <note>Publicação on-line; Bibliography p. 8-10 (53 ref.); 2 tables; 4 illus.; Summary (En)</note>
  <subject>
    <topic>CELULOSE</topic>
  </subject>
  <subject>
    <topic>MOENDA</topic>
  </subject>
  <subject>
    <topic>PROPRIEDADE MECÂNICA</topic>
  </subject>
  <subject>
    <topic>POLPA</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Floresta e Ambiente (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994</publisher>
    </originInfo>
    <identifier>2025-0452</identifier>
    <identifier type="issn">1415-0980  /  ISSN 2179-8087 0nline</identifier>
    <identifier type="local">BR2026000327</identifier>
    <part>
      <text>v. 26(4) p. 1-10; (2019)</text>
    </part>
  </relatedItem>
  <identifier type="uri">https://www.scielo.br/j/floram/a/WQKykG5TVCXXSsfMz43cchQ/?format=pdf&amp;lang=en</identifier>
  <location>
    <url>https://www.scielo.br/j/floram/a/WQKykG5TVCXXSsfMz43cchQ/?format=pdf&amp;lang=en</url>
  </location>
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    <recordContentSource authority="marcorg">BR-BrBNA</recordContentSource>
    <recordCreationDate encoding="marc">260409</recordCreationDate>
    <recordChangeDate encoding="iso8601">20260409075727.0</recordChangeDate>
    <languageOfCataloging>
      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
    </languageOfCataloging>
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