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A Comparison of Cooking Conditions of IRhizoclonium/I Pulp as a Substitute for Wood Pulp

Polymers, 2022-10, Vol.14 (19) [Peer Reviewed Journal]

COPYRIGHT 2022 MDPI AG ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym14194162

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  • Title:
    A Comparison of Cooking Conditions of IRhizoclonium/I Pulp as a Substitute for Wood Pulp
  • Author: Hwang, Pai-An ; Wong, Song-Ling ; Liu, Yu-Ching
  • Subjects: Analysis ; Mechanical properties ; Pulp industry
  • Is Part Of: Polymers, 2022-10, Vol.14 (19)
  • Description: The green macroalga Rhizoclonium was cooked with 5%, 10%, and 20% sodium hydroxide (NaOH) for 4 h (5-N, 10-N, and 20-N groups, respectively); with 5%, 10%, and 20% sodium sulfite (Na[sub.2]SO[sub.3]) for 4 h (5-NS, 10-NS, and 20-NS groups, respectively); and with 5%, 10%, and 20% NaOH for 2 h and 1% hydrogen peroxide (H[sub.2]O[sub.2]) for 2 h (5-NH, 10-NH, and 20-NH groups, respectively). The 5-NH handsheet showed the best mechanical properties; however, the 10-NH pulp was easier to separate than 5-NH during handsheet making, and 10-NH was more suitable for the industrial process. Thus, the 10-NH group showed the optimal production conditions with an optimal length/width ratio, crystallinity index (CI%), three-dimensional (3D) configuration, and mechanical strength. Substituting 20% 10-NH Rhizoclonium pulp with wood pulp had no significant effect on the mechanical properties of the 100% wood pulp handsheet. However, the fibers of the NS group were flatter and lost their 3D configuration, resulting in low mechanical strength. Overall, Rhizoclonium had its own optimal cooking condition, which was not the same as for wood pulp, and it has potential as a substitute for wood pulp in papermaking.
  • Publisher: MDPI AG
  • Language: English
  • Identifier: ISSN: 2073-4360
    EISSN: 2073-4360
    DOI: 10.3390/polym14194162
  • Source: DOAJ Directory of Open Access Journals
    PubMed Central (Training)
    GFMER Free Medical Journals
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
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