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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 柯淳涵 | zh_TW |
| dc.contributor.advisor | Chun-Han Ko | en |
| dc.contributor.author | 鄭文益 | zh_TW |
| dc.contributor.author | Wen-Yi Cheng | en |
| dc.date.accessioned | 2025-09-17T16:27:05Z | - |
| dc.date.available | 2025-09-18 | - |
| dc.date.copyright | 2025-09-17 | - |
| dc.date.issued | 2025 | - |
| dc.date.submitted | 2025-08-06 | - |
| dc.identifier.citation | Abdallah, A. F., Jawaid, M., Mohamed, A. Z., Tahir, P. M., & Abdullah, U. H. (2024). Alkaline sulfite anthraquinone and methanol pulps from bamboo for papermaking applications. Biomass Conversion and Biorefinery, 1-18.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/99711 | - |
| dc.description.abstract | 本研究旨在探討以柳杉鹼性蒸汽預處理漿應用於製備溶解漿之可行性。木片經由亞硫酸鹽法 (K)、1%酸性蒸汽爆破 (A)、2 %鹼性蒸汽爆破 (B2)、4%鹼性蒸汽爆破 (B4)等不同預處理方法，進行後續蒸煮 (C)與三段漂白 (H₁E₁、H₂E₂、H₃E₃)處理，分析其對黏度、白度、分子量與木質素去除率之影響。研究結果顯示，酸蒸爆A組雖處理條件激烈，但E₁階段殘留木質素仍高 (NaClO可溶物達13.8%)，白度僅提升至27.5%，顯示須增加藥品使用量或漂白段數以達製漿要求；相較之下，B2C、B₄、B₄C組在E₂階段已具備優異脫木質素效果，木質素含量低於1%。在E3階段B₄、B₄C且白度可達到89.1%與90.8%，且黏度可維持在13.1 cP 與12.8 cP，符合溶解級紙漿之標準。相較傳統亞硫酸鹽紙漿工藝有更高之白度 (83.9%)與黏度 (10.3 cP)，顯示預處理條件能有效地提升白度與去木質素效率，且控制對纖維素主鏈的降解風險。GPC與化學組成分析顯示，B₄與B₄C之PDI值分別為4.2與3.5，較其他組別分布更集中，半纖維素含量可以控制在7-8%，代表纖維具良好均質性與應用潛力；相較下，未經前處理之SP 組纖維殘留半纖維素較高、黏度與白度提升有限，需經鹼或氨氣處理才可將牛皮紙級漿轉化為溶解即漿。同時，傳統亞硫酸鹽紙漿工藝預處理時間最長 (170℃, 3 hr )，為各預處理方法中，最不具環保效益之選項。綜合上述，柳杉經適當之鹼性蒸爆搭配低溫蒸煮與分段漂白，可在較低的能耗下，製備具高白度、低雜質且黏度與分子量適宜之溶解級紙漿，顯示國產材具發展再生纖維應用之潛能，有助於實現低碳永續及紡織產業原料本地化之目標。 | zh_TW |
| dc.description.abstract | This study evaluated alkaline steam-pretreated Japanese Cedar for dissolving pulp production. Wood chips underwent various pretreatment methods, followed by cooking (C) and a three-stage bleaching process (H₁E₁, H₂E₂, H₃E₃). To assess their effects on pulp viscosity, brightness, molecular weight, and lignin removal efficiency. Acid-pretreated A group showed poor delignification and low brightness (27.5%) after E₁, groups B₂C, B₄, and B₄C achieved lignin contents <1% by E₂ and high brightness (up to 90.8%) by E₃, with viscosities meeting dissolving-grade standards (≥12.8 cP). Compared to kraft pulp (83.9% brightness, 10.3 cP), these alkaline steam-pretreatments enhanced delignification and brightness while preserving cellulose integrity. GPC and chemical analysis showed 4% alkaline treated SEP had PDI values of 4.2 and 3.5, indicating narrower molecular weight distributions. Hemicellulose content was maintained at 7–8%, ensuring fiber homogeneity. In contrast, un-pretreated SP retained more hemicellulose and required further treatment to reach dissolving-grade quality. The combination of alkaline steam explosion, low-temp cooking, and staged bleaching effectively produced high-brightness, low-impurity dissolving pulp from Japanese cedar. These results highlight the potential of domestic wood resources for regenerated fiber applications, supporting low-carbon sustainability and raw material localization in the textile industry. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2025-09-17T16:27:05Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2025-09-17T16:27:05Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 口試委員會審定書 i
中文摘要 ii ABSTRACT iii 目次 iv 圖次 viii 表次 x 縮寫表 xii 第一章 前言 1 第二章 文獻回顧 3 2.1 溶解級漿 (Dissolving pulp) 4 2.1.1 標準 4 2.1.2 污染物 (Impurities) 6 2.1.3 聚合度 (Degree of polymerization；DP) 6 2.2 溶解級漿之典型製程 9 2.2.1 原料 (Raw Material) 10 2.2.2 預處理 (Pretreatment) 11 2.2.3 蒸煮製漿 12 2.2.4 鹼性亞硫酸鹽製漿 12 2.2.5 蒸汽爆碎製漿 14 2.2.6 SEP 木質素去除機制 16 2.2.7 鹼性預處理之文獻回顧 17 2.3 漂白 18 2.3.1 氯價 20 2.3.2 ECF 與TCF漂白 22 2.3.3 次氯酸鈉漂白 (H) 23 2.3.4 鹼萃 (E) 24 2.4 漂白之影響 25 2.4.1 對黏度之影響 25 2.4.2 對分子量分佈之影響 27 2.4.3 製程模擬 29 2.4.4 製漿能耗 30 第三章 材料與方法 32 3.1 研究架構圖 32 3.2 材料 33 3.2.1 原料 33 3.2.2 化學品 33 3.3 方法 34 3.3.1 亞硫酸鹽製漿 34 3.3.2 蒸汽爆碎 (SEP) 35 3.3.3 低溫蒸煮 35 3.3.4 磨漿與良漿率 36 3.3.5 漂白 36 3.4 製漿適漿性 37 3.4.1 手抄紙製備 37 3.4.2 抗張強度 38 3.4.3 破裂強度 38 3.4.4 白度 39 3.4.5 紙漿黏度 39 3.4.6 纖維長度篩分 40 3.5 紙漿化學組成分析 40 3.5.1 灰分 40 3.5.2 抽出成分 41 3.5.3 全纖維素 41 3.5.4 α-纖維素 42 3.6 凝膠層析儀 (GPC/SEC) 43 3.7 環境衝擊評估 45 第四章 結果與討論 46 4.1 纖維形態與製漿潛力 46 4.1.1 纖維長度測試 46 4.1.2 黏度 47 4.2 化學組成分及其收率 49 4.3 分子量分布 52 4.3.1 凝膠層析儀 (GPC/SEC) 52 4.3.2 MW、Mn、PDI 56 4.3.3 MW vs. 紙漿黏度 58 4.4 手抄紙物理性質 60 4.4.1 抗張指數 vs. MW vs. Mn 60 4.5 選擇性 62 4.5.1 黏度 vs. 白度 62 4.5.2 能耗vs. α-纖維素 純度 64 4.5.3 環境衝擊分析 66 第五章 結論 68 參考文獻 69 附錄 74 | - |
| dc.language.iso | zh_TW | - |
| dc.subject | 凝膠層析儀 | zh_TW |
| dc.subject | 柳杉 | zh_TW |
| dc.subject | 聚合度 | zh_TW |
| dc.subject | 漂白 | zh_TW |
| dc.subject | 溶解級漿 | zh_TW |
| dc.subject | Gel permeation chromatography | en |
| dc.subject | Cryptomeria japonica | en |
| dc.subject | Dissolving pulp | en |
| dc.subject | Steam explosion | en |
| dc.subject | Bleaching | en |
| dc.subject | Degree of polymerization | en |
| dc.title | 蒸氣爆碎製漿用於溶解級紙漿之應用 | zh_TW |
| dc.title | Application of Steam Explosion Pulping in Dissolving Grade Pulp | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 113-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.coadvisor | 官崇煜 | zh_TW |
| dc.contributor.coadvisor | Chung-Yu Guan | en |
| dc.contributor.oralexamcommittee | 藍浩繁 ;張芳志 | zh_TW |
| dc.contributor.oralexamcommittee | Haw-Earn Lan;Fang-Chih Chang | en |
| dc.subject.keyword | 柳杉,溶解級漿,漂白,聚合度,凝膠層析儀, | zh_TW |
| dc.subject.keyword | Cryptomeria japonica,Dissolving pulp,Steam explosion,Bleaching,Degree of polymerization,Gel permeation chromatography, | en |
| dc.relation.page | 78 | - |
| dc.identifier.doi | 10.6342/NTU202501819 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2025-08-10 | - |
| dc.contributor.author-college | 生物資源暨農學院 | - |
| dc.contributor.author-dept | 森林環境暨資源學系 | - |
| dc.date.embargo-lift | 2030-07-14 | - |
| 顯示於系所單位： | 森林環境暨資源學系 | |
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