检索结果-内蒙古大学图书馆

Studies on production of antibacterial wet-tissue saturated with hypochlorous acid water - Changes in HOCL absorption rate in different tissue fabric and its effects on antibacterial activity

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2017年第3期49卷 5-11页

作者： Choi, Kyoung-Hwa Seo, Jin Ho Lee, Myoung-Ku Changgang Institute of Paper Science and Technology Kangwon National University Chuncheon24341 Korea Republic of Program of Paper Science and Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon Korea Republic of

This study was conducted to investigate the changes in the HOCl absorption rate in the different tissue fabric and its effects on antibacterial rate against Klebsiella pneumoniae. HOCl solution was made by electrolysis of NaCl solution. As results, the absorption rate of HOCl solution into the basic tissue fabric increased with increasing cotton or rayon contents. Antibacterial activity against Klebsiella pneumoniae increased as HOCl concentration increased. Especially, the antibacterial activity of wet-tissue was 100% under the conditions of more than approximately 15 ppm of HOCl. However, it was found that antibacterial activity decreased with increasing the elapsed time after HOCl solution treatment.

关键词： Bacteria

来源：评论

学校读者我要写书评

暂无评论

Evaluation of dynamics of capillary rise of water in various papers

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2018年第2期50卷 20-28页

作者： Yang, Han-Nwi Cho, Byoung-Uk Program of Paper Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon24341 Korea Republic of

This study was conducted to elucidate and to model the dynamics of capillary rise of water in various papers using the Klemm method. Dynamics of water absorption by capillary rise in various papers such as fine paper, newsprint, tissues, and color paper were measured and the relationships between the Klemm method and other sizing test methods were evaluated. It was found that the dynamics of water absorption in paper by capillary rise can be modelled using the first order process model and thus the first order transfer function. The Klemm sizing degree had a high positive correlation (r=0.98) with the process gain K of the water absorption model while it has a negative correlation (r=-0.67) with the time constant x, meaning that the transfer rate of water was faster when the height of water absorption was higher. Klemm sizing degree was highly influenced by bulk and ash content of paper, and contact angle of water on paper. Correlation coefficients between each sizing test methods were not so high, meaning that any sizing degree test method can not represent all methods and a proper testing method shall be selected considering the purpose of usage. © 2018 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Dynamics

来源：评论

学校读者我要写书评

暂无评论

Studies on seasonal variation of linerboard strength (III) - Effect of pulping consistency of OCC on strength of linerboard

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2018年第4期50卷 40-46页

作者： Lee, Kwang-Seob Choi, Kyoung-Hwa Won, Heon-Seong Choi, Seong-Keong Choi, Ji-Su Ryu, Jeong-Yong Program of Paper Science and Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chunchon Korea Republic of Chaggang Institute of Paper Science and Technology Kangwon National University Chuncheon24341 Korea Republic of

The strength of linerboards produced in summer was weaker than that in winter. In this study, efforts were made to increase the consistency of OCC pulp to improve the strength of linerboards produced in the summer. The pulping temperatures of summer and winter were set at 52°C and 19°C, respectively. The pulping consistency was set 5% at 19°C in winter and 5, 6, 6.5 and 7% at 52°C in summer. As a result, it has been found that the strength of the linerboard can be improved by increasing the pulping consistency. The strength of the linerboard with a pulping consistency of 6% and a pulping temperature of 52°C is similar to that of 5% and 19°C. The linerboard strength increased by more than 20% when the consistency increased to 6.5 and 7%. Therefore, an increase in pulp consistency is considered to be one of the solutions to improve the strength of linerboards in summer. © 2015 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Pulp

来源：评论

学校读者我要写书评

暂无评论

Effects of grinding-homogenizing treatments on the characteristics of MFC

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2018年第2期50卷 60-67页

作者： Park, Jae-Jun Choi, Kyoung-Hwa Cho, Byoung-Uk Program of Paper Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon Korea Republic of Changgang Institute of Paper Science and Technology Kangwon National University Chuncheon Korea Republic of

Effects of grinding and grinding-homogenizing treatments on MFC (micro-fibrillated cellulose) manufacturing characteristics were compared. MFC was manufactured by two different mechanical processes: (1) Grinding treatment only (Grinding) and (2) Homogenizing treatment after 5 passes of grinding (Grinding-Homogenizing). And then characteristics of MFCs produced were evaluated. It was found that the grinding-homogenizing treatment can improve fibrillation efficiency compared with the grinding treatment. The grinding-homogenizing treatment produced MFC with higher slurry viscosity and WRV than that with the grinding. In addition, the CED viscosity and the crystallinity index of MFC produced with the grinding-homogenizing process were higher than that with the grinding process at a given MFC slurry viscosity, implying that a high quality MFC could be produced with the grinding-homogenizing process. No distinct differences in crystalline and chemical structure were observed between the MFCs produced with different processes and different pass numbers. © 2018 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Grinding (machining)

来源：评论

学校读者我要写书评

暂无评论

Changes in handsheet properties by addition of the fibrillated cellulose ground with CMC

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2017年第6期49卷 111-117页

作者： Lee, Jae-Hun Choi, Kyoung-Hwa Cho, Byoung-Uk Program of Paper Science and Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon24341 Korea Republic of Changgang Institute of Paper Science and Technology Kangwon National University Chuncheon24341 Korea Republic of

This study was conducted to investigate the effect of fibrillated cellulose (FC) on hand-sheet properties and to evaluate the possibility of using FC as a dry strength agent for papermaking. The FC or low grade MFC (microfibrillated cellulose) was produced by grinding hardwood bleached kraft pulp slurry with/without carboxymethyl cellulose (CMC). The grinding pass number for the production of FC was adjusted to three. It was found that paper strength was significantly increased with addition of FC. The FC produced with CMC showed much higher strength properties than that without CMC. With addition of 5% FC produced with CMC, tensile energy absorption (TEA) was increased 215% and folding strength was improved 670%. The results showed that fibrillated cellulose (FC) produced with CMC can be used as a good dry strength agent for papermaking.

关键词： Cellulose

来源：评论

学校读者我要写书评

暂无评论

Comparative analysis of the efficiency of gas grafting reaction of different types of Hanji with palmitoyl chloride

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2019年第3期51卷 90-97页

作者： Choi, Kyoung-Hwa Lee, Kwang Seob Lee, Jae-Hoon Lee, Myoung-Ku Ryu, Jeong-Yong Changgarig Institute of Paper Science and Technology Kangwon National University Chunchon24341 Korea Republic of Program of Paper Science and Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon24341 Korea Republic of

This study was conducted to investigate the changes in the grafting efficiency of different types of Hanji, such as a raw materials and manufacturing methods varying different palmitoyl chloride concentrations and reaction temperatures. The results showed that the raw material of Hanji affected the grafting efficiency. The grafting efficiency of Hanji produced using the bast fiber of Edgeworthia chrysantha Lindl. was particularly excellent. Meanwhile, the amidation between anionic polyacrylamide (A-PAM) and palmitoyl chloride was speculated to occur in the case of Hanji at which A-PAM was added. However, the manufacturing process of Hanji had little influence on the graft reaction efficiency. The strength and brightness of all Hanji samples decreased via the gas grafting treatment, regardless of the kind of Hanji. The changes in the hydrophobicity, physical and optical properties of Hanji samples via gas grafting increased with the increasing palmitoyl chloride concentration and reaction temperature. © 2019 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Grafting (chemical)

来源：评论

学校读者我要写书评

暂无评论

Application of dry strength agents for the manufacture of low basis weight corrugating medium based on recycled aseptic carton fibers

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2019年第3期51卷 13-22页

作者： Choi, Ji Seon Kim, Seon Yong Sim, Byul Lee, Kwang Seob Lee, Myoung Ku Ryu, Jeong Yong Program of Paper Science and Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon24341 Korea Republic of Changgang Institute of Paper Science and Technology Kangwon National University Chunchon24341 Korea Republic of

Korean old corrugated containers (KOCC) have insufficient compressive strength because the bonding potential of the unsorted recovered fibers is poor. Compared to the nature of KOCC, the recovered aseptic carton is a high-quality resource produced from virgin pulp, which is expected to improve the strength of a testliner. In this study, the usage of recycled aseptic carton fibers was attempted to improve the strength properties of corrugating medium paper. In addition to recycled aseptic carton fibers, the application of a dry-strength agent was attempted to improve the bonding potential of fibers. Consequently, the compressive strength increased when the retention of fines in the mixed stock of KOCC and aseptic fibers increased. Meanwhile, aseptic carton comprised fibers with high stiffness and low flexibility;hence, the aseptic carton fibers exhibited a higher compressive strength than KOCC but did not fully manifest the efficiency of dry-strength agents. These results suggest that recycled aseptic carton fibers with or without beating should be used to obtain a sufficient compressive strength of the corrugating medium. The selective application of the dry-strength agent to the KOCC instead of the aseptic carton fibers may also be beneficial. © 2019 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Compressive strength

来源：评论

学校读者我要写书评

暂无评论

Manufacture of Recording paper with Hydrophobicity by Gas Chromatographic Grafting Reaction

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2019年第1期51卷 5-12页

作者： Kim, Doo-Hyun Choi, Kyoung-Hwa Ryu, Jeong-Yong Lee, Myoung-Ku Program of Paper Science and Engineering College of Forest and Environmental Science Kangwon National University Chuncheon24341 Korea Republic of Changgang Institute of Paper Science and Technology Kangwon National University Chun-cheon24341 Korea Republic of

This research was conducted to manufacture the recording paper with hydrophobicity by gas chromatography grafting reaction varying the concentration of palmitoyl chloride, followed by determination of hydrophobicity, physical properties, biodegradation and printability of paper. The hydrophobicity of recording paper was improved as the concentration of palmitoyl chloride increased even though both tensile and burst strengths reduced slightly at 2%. Both optical property and printability remained. The higher the hydrophobicity of the paper, the lower the growth rate of bacteria. From these results, it is concluded that the gas chromatographic grafting technology is applicable to the manufacture of the recording paper with good hydrophobicity. © 2019 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Hydrophobicity

来源：评论

学校读者我要写书评

暂无评论

Effects of Surface Coating of Cellulose ll-based MFC on paper Properties

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2019年第1期51卷 28-36页

作者： Park, Min-A Lee, Sung-Gyu Choi, Kyoung-Hwa Cho, Byoung-Uk Program of Paper Science and Engineering College of Forest and Environmental Science Kangwon National University Chuncheon24341 Korea Republic of Changgang Institute of Paper Science and Technology Kangwon National University Chun-Cheon24341 Korea Republic of

The effects of surface coating of cellulose II-based micro-fibrillated celluloses (MFCs) prepared with high concentration alkali treatment with/without co-solvent and then subsequent grinding were investigated in terms of physical properties of the coated papers. It was found that both of cellulose i MFC and cellulose II MFCs improved paper strength with increasing the pick-up of the MFCs. A similar magnitude of increase in paper strength was observed between cellulose I MFC and cellulose II MFCs. Optical properties of paper were slightly impaired with surface coating of MFCs. The papers coated with cellulose II MFCs showed a less color deviation and higher brightness than the papers coated with cellulose I MFC. No distinctive effect of co-solvent was found in strength and optical properties of the coated papers. The air resistances of the MFC coated papers were increased with the pick-up of MFCs. The papers coated with cellulose I MFC showed a higher air resistance than that with cellulose II MFCs at a given pick-up due to the more fibrillated nature of cellulose I MFC. © 2019 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Cellulose

来源：评论

学校读者我要写书评

暂无评论

Artificial aging characteristics of hydrophobic hanjis grafted by gaseous palmitoyl chloride

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and paper Industry 2019年第3期51卷 98-107页

作者： Choi, Kyoung-Hwa Lee, Kwang Seob Lee, Jae-Hoon Lee, Myoung-Ku Ryu, Jeong-Yong Changgang Institute of Paper Science and Technology Kangwon National University Chunchon24341 Korea Republic of Program of Paper Science and Engineering Division of Forest Material Science and Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon24341 Korea Republic of

This study was conducted to investigate the effects of gas grafting treatment on the durability of Korean traditional paper i.e., Hanji. Dry heating- and humid heating-accelerated aging tests were performed. Further, the properties of each Hanji sample, including strength, optical property, Cobb size degree, and static contact angle, were analyzed. The decrease in the strength and optical characteristics of the Hanji hydrophobized via gas grafting with palmitoyl chloride during artificial aging was found to be more significant than that of untreated paper. The decrease in durability was speculated to be caused by the residual free fatty acids in the Hanji. In contrast, no changes in the Cobb size and static contact angle of the hydrophobic Hanji occurred during accelerated aging. In summary, the hydrophobicity of Hanji grafted with palmitoyl chloride remained unchanged during 30 days of dry-heating aging and 60 days of humid-heating aging, however, the durability of paper material, including strength and optical properties, deteriorated. Therefore, the attenuation and elimination of residual free fatty acids must be investigated to prevent the decrease of durability. © 2019 Korean Technical Assoc. of the Pulp and paper Industry. All rights reserved.

关键词： Grafting (chemical)

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：