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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Paper-based Microfluidic Chip and Its Research Progress in Water Environment Detection]]></title>
<link><![CDATA[http://zgzzxb.ijournals.cn/zzxben/ch/reader/view_abstract.aspx?file_no=202303016&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Water environmental pollution is a serious problem in China. There is an urgent need to develop rapid detection methods for environmental pollutants in water. In recent years， paper-based microfluidic analytical devices （μPAD） have been rapidly developed in the field of environmental monitoring. It has advantages such as low cost， simple production， less reagent consumption and ease of carrying. It satisfied the standard of rapid on-site testing device “ASSURED” established by the World Health Organization （WHO）. Hence， in this paper， the research progress of μPAD in water environment detection is reviewed from following aspects. First， the paper-based materials improvement strategies for μPAD preparation are introduced， the μPAD preparation methods and strategies are discussed for enhancement of μPAD sensing performance， and the available applied methods of fluid motion control on μPAD are summarized. Then， the research progress of water environment rapid detection methods and corresponding sensor development principles based on μPAD are mainly introduced. Finally， the current limitations of μPAD are evaluated and the further research orientation of μPAD are prospected.]]></description>
<pubDate>2023/9/20 0:00:00</pubDate>
<category><![CDATA[论 文]]></category>
<author><![CDATA[WANG Linzhe,HU Jingfang,YANG Yangchun,SONG Yu,LI Yansheng,GAO Guowei]]></author>
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<atom:name>WANG Linzhe,HU Jingfang,YANG Yangchun,SONG Yu,LI Yansheng,GAO Guowei</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Modification and Application of Fine Components in Wheat Straw Chemi-mechanical Pulp]]></title>
<link><![CDATA[http://zgzzxb.ijournals.cn/zzxben/ch/reader/view_abstract.aspx?file_no=202303017&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Wheat straw chemi-mechanical pulp is an important fiber raw material for papermaking， but its high content of fine components （components passing through 200 mesh ） not only leads to a decrease in the drainage performance of the pulp， but also reduces the surface strength of the paper， thereby limiting the large-scale application of wheat straw chemi-mechanical pulp. This study uses the Bauer sieve to screen out the fines， and uses the DOE Taguchi experimental design method to study the changes in the grafting modification of acrylic acid （AA） on the fines. A comparative analysis is conducted on the fiber morphology， water filtration performance， and the impact of blending on paper performance before and after the modification of the fines. Research has found that the optimal modification process conditions are as follows： the amount of cerium ammonium nitrate potassium persulfate （molar ratio 1∶1） composite initiator is 1 mmoL； the initiation time is 20 minutes； the temperature is 50℃； the amount of grafting monomer AA is 4 mL； the reaction time is 3 hours， so that the grafting efficiency reaches 85.31% and the grafting rate is 69.50%. After modification， the number average length， weight average length， and width of AAMF increased by 2.06%， 2.78%， and 45.28%， respectively. The percentage content of fines decreased by 19.62%； The water retention value has increased by 13 times. By blending unmodified fines and AAMF with R28 （remained 28 mesh） components of wheat straw chemi-mechanical pulp， it was found that compared with unmodified fines， adding AAMF can improve the water filtration performance of wheat straw pulp， the tear and tensile strength of the paper.]]></description>
<pubDate>2023/9/20 0:00:00</pubDate>
<category><![CDATA[论 文]]></category>
<author><![CDATA[ZHOU Pingyan,JING Yi,FANG Guigan]]></author>
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<atom:name>ZHOU Pingyan,JING Yi,FANG Guigan</atom:name>
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