FIBER CLASSIFICATION, PHYSICAL AND OPTICAL PROPERTIES OF RECYCLED PAPER

Yilmaz U., TUTUŞ A., SÖNMEZ S.

CELLULOSE CHEMISTRY AND TECHNOLOGY, cilt.55, ss.689-696, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55
  • Basım Tarihi: 2021
  • Doi Numarası: 10.35812/cellulosechemtechnol.2021.55.58
  • Dergi Adı: CELLULOSE CHEMISTRY AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core
  • Sayfa Sayıları: ss.689-696
  • Anahtar Kelimeler: INGEDE, recycling, optical properties, physical properties, fiber classification, WATER
  • Marmara Üniversitesi Adresli: Evet

Özet

In this study, reference papers prepared in accordance with the INGEDE 11p standard (International Association of the Deinking Industry) were recycled three times. Initially, reference papers were subjected to wetting, pulping, storage, deinking, dispersing and bleaching processes. At the end of these processes, test papers were produced and their optical characteristics were examined. The brightness value of writing papers (of 80 grams) was determined to be of 86%, following the TS 11610:2017 standard. In order to bring the brightness of the produced laboratory test papers to the specified value, double-stage bleaching was applied: with 0.4% FAS in the first stage and H2O2 in the second stage. The physical and optical properties of the test papers that reached the standard brightness value were determined. Overall, the final products were recycled three times. At the end of the third recycling stage, changes in paper fibers were examined.