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Feasibility of utilizing Rhizoclonium in pulping and papermaking

Journal of applied phycology, 2000-01, Vol.12 (1), p.53-62 [Tạp chí có phản biện]

2000 INIST-CNRS ;Kluwer Academic Publishers 2000. ;ISSN: 0921-8971 ;EISSN: 1573-5176 ;DOI: 10.1023/A:1008166815023

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Nhan đề:
Feasibility of utilizing Rhizoclonium in pulping and papermaking
Tác giả: CHAO, K.-P ; SU, Y.-C ; CHEN, C.-S
Chủ đề: Algae ; Analytical methods ; Applied sciences ; Bleaching ; Brackish ; Brackish water ; Bursting ; Cellulose ; Conformation ; Cooking ; Exact sciences and technology ; Feasibility studies ; Folding ; Kraft pulp ; Paper, paperboard, non wovens ; Papermaking ; Physical characteristics ; Polymer industry, paints, wood ; Pulp ; Pulp manufacturing ; Pulping ; Rhizoclonium ; Sodium hydroxide ; Softwoods ; Sulfur ; Sulphur ; Taiwan ; Tearing ; Tensile strength ; Wood ; Wood pulp ; Wood. Paper. Non wovens ; X-ray diffraction
Là 1 phần của: Journal of applied phycology, 2000-01, Vol.12 (1), p.53-62
Mô tả: Material of Rhizoclonium from brackish water in Taiwan was investigated for its possible use in pulping and papermaking. After beating, this filamentous alga produced a pulp with a length to width ratio of about 10, much less than that of a typical wood pulp. Handsheets made from this pulp had a moderate breaking length of 4.02 km. Cooking pre-beaten pulp with a low chemical charge (5–25%NaOH) at a low cooking temperature (100 °C), and for a short time (30–120 min) gave high algal pulp yields (70–80%). This cooking process was sulfur-free, but the water requirement was high. After cooking and further caustic soda and bleaching treatments, wide-angle X-ray diffraction and FTIR spectroscopy showed that the crystallinity of the algal pulp increased substantially, but type I cellulose conformation was retained. The best pulp mechanical strengths (breaking length 5.23 km,zero-span tensile strength 79.2 Nm g-1, bursting index of 2.2 kpa m2 g-1) were obtained after cooking for 1 h with 20% NaOH. Because of the morphological characteristics of the algal strands, the pulp generally lacked bursting, tearing and folding strengths, but proper blending with softwood pulp increased the tensile breaking length to8.40 km, the tearing index to 14.5 mNm2 g-1, the bursting index to 6.42 kpam2 g-1 and the folding endurance to 4299 double folds, i.e. levels comparable to a typical kraft pulp. The algal pulp thus showed clear potential as a supplement for traditional medium strength wood pulps.
Nơi xuất bản: Dordrecht: Springer
Ngôn ngữ: English
Số nhận dạng: ISSN: 0921-8971
EISSN: 1573-5176
DOI: 10.1023/A:1008166815023
Nguồn: Alma/SFX Local Collection
ProQuest Central

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Feasibility of utilizing Rhizoclonium in pulping and papermaking

2000 INIST-CNRS ;Kluwer Academic Publishers 2000. ;ISSN: 0921-8971 ;EISSN: 1573-5176 ;DOI: 10.1023/A:1008166815023

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