Nordic Pulp & Paper Research Journal最新文献_第3页

Effect of flax sheet prepared by wet-laying technology on tensile properties of flax/polypropylene composites 湿铺技术制备的亚麻片材对亚麻/聚丙烯复合材料拉伸性能的影响

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-07-18 DOI: 10.1515/npprj-2023-0050

Ting Wang, Xinyu Zhang, Yefan Wang, Zhihua Guo, Qian Wang, Sheng Liu, Ze Miao, Xiaoyuan Liao, Haitang Liu

引用次数: 0

Effect of wettability on paper literature deacidification by ultrasonic atomization 润湿性对超声波雾化纸张文献脱酸的影响

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-07-18 DOI: 10.1515/npprj-2023-0079

Zhuoyao Ma, Huiming Fan, Yunfei Liao, Baihe Yun, Zehao Wang, Ting Wu, Jianan Liu

引用次数: 0

Plastic-free, oil- and water-resistant paper for food packing 用于食品包装的无塑料防油防水纸

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-06-24 DOI: 10.1515/npprj-2024-0022

Peiyi Li, Xinyao Zhou, Boxing Jian, Miaomiao Zhou, Ruiyan Liu, Bolong Sun, Xinping Li, Yun Wang, Bingyao Zhou

{"title":"Plastic-free, oil- and water-resistant paper for food packing","authors":"Peiyi Li, Xinyao Zhou, Boxing Jian, Miaomiao Zhou, Ruiyan Liu, Bolong Sun, Xinping Li, Yun Wang, Bingyao Zhou","doi":"10.1515/npprj-2024-0022","DOIUrl":"https://doi.org/10.1515/npprj-2024-0022","url":null,"abstract":"Traditional food packaging coated paper is not environmentally friendly, and there have been many studies on oil- and water-resistant paper for food packaging. However, preparing oil- and water-resistant paper that is plastic-free, fluorine-free, and environmentally friendly is still a significant challenge. In this study, oil- and water-resistant paper for food packaging are prepared by layer-by-layer assembly and mixing coating methods. The layer-by-layer assembly coated paper exhibits excellent water resistance (Cobb 60 value of 20.5 g/m2, water contact angle value of 132°). The mixed coated paper not only has good water resistance (Cobb 60 value of 27.1 g/m2, water contact angle value of 131°), but also has excellent oil resistance (kit rating value of 8/12). The oil-resistant and waterproof mechanism of the coated paper is confirmed through scanning electron microscopy. In addition, the mechanical performance and coating adhesion of the mixed coated paper are the best, with an increase in the tensile index of 73.1 %. This study provides a feasible strategy for preparing biodegradable, plastic-free, and fluorine-free food packaging oil- and water-resistant paper, which is beneficial for reducing plastic pollution.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"97 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of secondary condensates from evaporation as washing liquid in kraft pulp bleaching 将蒸发产生的二次冷凝物用作牛皮纸浆漂白的洗涤液

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-06-24 DOI: 10.1515/npprj-2024-0018

Isabel S.S. Pinto, Bebiana Costa, Inês Portugal

{"title":"Use of secondary condensates from evaporation as washing liquid in kraft pulp bleaching","authors":"Isabel S.S. Pinto, Bebiana Costa, Inês Portugal","doi":"10.1515/npprj-2024-0018","DOIUrl":"https://doi.org/10.1515/npprj-2024-0018","url":null,"abstract":"This study investigates the role of secondary condensates in the pulp and paper industry’s journey to minimize its water footprint. The integration of secondary condensates, traditionally less explored in bleaching processes, is examined for its potential in reducing freshwater demand. Condensates with different organic content (chemical oxygen demand, COD) and their mixtures were tested as washing liquid after the alkaline extraction stage (E P ) of eucalyptus globulus kraft pulp and compared to hot water. Two subsequent chlorine dioxide stages were applied to evaluate the impact of the washing liquid COD on pulp properties and chemicals consumption. Despite its higher organic content, the condensates can be used as a partial or total substitute for hot water without substantial compromises in the pulp properties, such as brightness, reversion, and viscosity. The calculated correlation between ClO2 consumption and COD in the washing liquid can be applied for assessing economic and environmental trade-offs, providing a roadmap for optimizing processes and reducing environmental impacts.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"24 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical modification of kraft lignin using black liquor heat treatment 利用黑液热处理对牛皮纸木质素进行化学改性

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-06-01 DOI: 10.1515/npprj-2023-0091

Iara Fontes Demuner, Fernando José Borges Gomes, Marcela Ribeiro Coura, Antonio Jacinto Demuner, Ana Márcia Macedo Ladeira Carvalho, Diana Catalina Cubides-Román, Larisse Aparecida Ribas Batalha, Rosane Nora Castro

{"title":"Chemical modification of kraft lignin using black liquor heat treatment","authors":"Iara Fontes Demuner, Fernando José Borges Gomes, Marcela Ribeiro Coura, Antonio Jacinto Demuner, Ana Márcia Macedo Ladeira Carvalho, Diana Catalina Cubides-Román, Larisse Aparecida Ribas Batalha, Rosane Nora Castro","doi":"10.1515/npprj-2023-0091","DOIUrl":"https://doi.org/10.1515/npprj-2023-0091","url":null,"abstract":"Utilizing kraft technical lignin to produce value-added products is one of the obstacles associated with kraft mill work as an operational biorefinery. The objective of this work was to evaluate chemical modification in eucalypt kraft lignin after heat treatment of black liquor. To prove possible structural changes, advanced analytical tools were used, such as pyrolysis coupled to gas chromatography and mass spectrometry (Py-GC/MS), Fourier transform infrared spectroscopy (FTIR), and two-dimensional nuclear magnetic resonance spectroscopy (2D NMR). Kraft lignins extracted from heat-treated liquors compared with the untreated liquors showed a high total lignin content, varying between 96.4 and 98.3 %, and a lower content of sugars and ash. Py-GC/MS, FTIR and 2D NMR analyses showed interesting modification on the lignin structure, such as a reduction in S-type and G-type lignin and an increase in H-type and Ca-type lignin with heat treatment of the black liquor. The heat treatment of the black liquor proved to be efficient in the chemical modification of the extracted kraft lignins. Demethylation and demethoxylation reactions occurred and they generated kraft lignin with free phenolic groups and that were rich in catechol groups.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"54 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and application in the paper protection of carboxymethyl cellulose grafted with β-cyclodextrin 用β-环糊精接枝的羧甲基纤维素的制备及其在纸张保护中的应用

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-06-01 DOI: 10.1515/npprj-2023-0057

Yuxuan Li, Xiaoshuang Chen, Hua Li, Dandan Li

{"title":"Preparation and application in the paper protection of carboxymethyl cellulose grafted with β-cyclodextrin","authors":"Yuxuan Li, Xiaoshuang Chen, Hua Li, Dandan Li","doi":"10.1515/npprj-2023-0057","DOIUrl":"https://doi.org/10.1515/npprj-2023-0057","url":null,"abstract":"As a cultural carrier of historical inheritance, paper has high cultural, historical and scientific research value. But with the passage of time and the change of the environment, many paper are aging and damaged. In order to protect the paper, CMC-β-CD composite material for paper protection was synthesized by carboxymethyl cellulose as substrate, epichlorohydrin (ECH) as crosslinking agent, sodium hydroxide (NaOH) as catalyst and solvent, and water as medium, β-cyclodextrin as grafter. Through single factor experiment, the synthetic condition was obtained. The structure of the synthesized materials was characterized by infrared spectroscopy; CMC-β-CD was applied to paper reinforcement. The effects of solution concentration on the tensile strength, tearing degree, folding times, whiteness and gloss of paper were tested, and the suitable conditions for coating paper were found. The results show that the mass concentration of 2 % CMC-β-CD is coated on paper, its mechanical properties are greatly improved, the gloss is slightly increased, and the whiteness is basically unchanged, which is in line with the principle of “repairing the old as the old”.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"41 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of selected sheet-fed offset printing conditions on primary mottling 选定的单张纸胶印条件对原生斑纹的影响

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-05-30 DOI: 10.1515/npprj-2024-0009

Jan Kowalczyk

引用次数: 0

Thermoformed products from high-density polyethylene and Softwood kraft pulp 高密度聚乙烯和软木牛皮浆热成型产品

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-05-27 DOI: 10.1515/npprj-2023-0067

Eric Desnoes, Pascale Deshaies, Benoit Bideau, Jorge Rubiano

{"title":"Thermoformed products from high-density polyethylene and Softwood kraft pulp","authors":"Eric Desnoes, Pascale Deshaies, Benoit Bideau, Jorge Rubiano","doi":"10.1515/npprj-2023-0067","DOIUrl":"https://doi.org/10.1515/npprj-2023-0067","url":null,"abstract":"Plastic recycling, waste minimization such as process outfall valorization promotes a circular economy. Herein, food trays have been produced in the moulded pulp thermoforming process. To this end, high-density polyethylene (HDPE) outfall has been dispersed in water via Poly vinyl alcohol (PVA) addition in a Northern Bleached Softwood Kraft Pulp (NBSKP) slurry. Samples physical and mechanical properties have been evaluated. With an increasing HDPE content, parts air permeability was drastically reduced to a minimum of 2.4 ± 0.8 mL min−1. In addition, water and grease hold out properties have been increased with minimum water Cobb1800 value of 10.9 ± 5.4 gm−2 and oil Cobb1800 value of 13.18 ± 6.5 gm−2. Samples with high HDPE content demonstrated hydrophobic surface with water contact angle value above 90°. HDPE melting and binding to wood pulp fibers was monitored by SEM images. Regarding the mechanical properties, HDPE induced plastic deformation with a reduced Young modulus by 17 %. Moreover, the addition of HDPE increased wet strength by 81 %. However, the produced food tray composites with high HDPE content demonstrated low repulpability index.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"97 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141173069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review on chemical mechanisms of kraft pulping 牛皮纸制浆化学机制综述

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-05-13 DOI: 10.1515/npprj-2023-0015

Gunnar Henriksson, Ulf Germgård, Mikael E. Lindström

引用次数: 0

Alkaline treatment and fractionation of OCC for strength improvement 碱性处理和分馏 OCC 以提高强度

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2024-04-30 DOI: 10.1515/npprj-2024-0008

M. Nakib Hossen, M. Mostafizur Rahman, Sharmin Islam, M. Sarwar Jahan

{"title":"Alkaline treatment and fractionation of OCC for strength improvement","authors":"M. Nakib Hossen, M. Mostafizur Rahman, Sharmin Islam, M. Sarwar Jahan","doi":"10.1515/npprj-2024-0008","DOIUrl":"https://doi.org/10.1515/npprj-2024-0008","url":null,"abstract":"The main drawback of recycled fibers is the deterioration of fiber bonding dependent papermaking properties (like tensile, tear and burst indexes) due to the hornification effect, as a results of drying during papermaking. In order to improve the papermaking properties through increasing fiber bonding, an alkaline treatment of Old Corrugated Cardboard (OCC) followed by fractionation were carried out in this investigation. Alkaline treatment dissolved 6.6 % organics (carbohydrates and lignin) and fibers became wider as a results of fiber swelling. The alkali treatment decreased fines from 39.9 % to 28.5 %, consequently, decreased drainage resistance from 26 °SR to 21 °SR. The papermaking properties of OCC pulp increased on alkaline treatment. Fiber fractionation of alkaline treated OCC further increased papermaking properties. At 40 °SR value, the tensile index, burst index and tear index of alkaline treated longer fiber fraction was 49 N m/g, 3.2 kPa m2/g, 7.2 mN m2/g, respectively while it was 40.4 N m/g, 2.1 kPa m2/g and 6.1 kPa m2/g, for non-treated longer fiber fraction, respectively.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"68 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140826662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0