Estimation of aspect ratio of cellulose nanocrystals by viscosity measurement: influence of surface charge density and NaCl concentration
Cellulose nanocrystals (CNCs) with similar size and various surface charge densities were prepared by sulfuric acid hydrolysis and NaOH desulfation. The influence of surface charge density and NaCl concentration on the intrinsic viscosity of CNC suspensions and predicted aspect ratio were investigat...
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| Veröffentlicht in: | Cellulose (London) 2017-08, Vol.24 (8), p.3255-3264 |
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| creator | Wu, Qiang Li, Xiuwen Fu, Shenyuan Li, Qian Wang, Siqun |
| description | Cellulose nanocrystals (CNCs) with similar size and various surface charge densities were prepared by sulfuric acid hydrolysis and NaOH desulfation. The influence of surface charge density and NaCl concentration on the intrinsic viscosity of CNC suspensions and predicted aspect ratio were investigated by Ubbelohde viscometer. With decreased CNC surface charge density, the intrinsic viscosity initially decreased due to the electric double layers on the CNC surface and subsequently increased due to CNC aggregation. To screen electroviscous effect, NaCl was added into CNC suspensions. With increased NaCl concentration, the intrinsic viscosity of CNC suspensions first decreased and then increased. The aspect ratios of CNCs predicted by Batchelor equation from the minimum intrinsic viscosity were consistent with that measured by transmission electron microscopy. Suspensions of CNCs with higher surface charge density needed less NaCl to obtain minimum intrinsic viscosity. The NaCl content that should be added to the suspension to predict the actual physical aspect ratio of CNC can be estimated by Debye–Hückel theory, assuming that the Debye length is equal to the CNC diameter. |
| doi_str_mv | 10.1007/s10570-017-1341-7 |
| format | Article |
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The influence of surface charge density and NaCl concentration on the intrinsic viscosity of CNC suspensions and predicted aspect ratio were investigated by Ubbelohde viscometer. With decreased CNC surface charge density, the intrinsic viscosity initially decreased due to the electric double layers on the CNC surface and subsequently increased due to CNC aggregation. To screen electroviscous effect, NaCl was added into CNC suspensions. With increased NaCl concentration, the intrinsic viscosity of CNC suspensions first decreased and then increased. The aspect ratios of CNCs predicted by Batchelor equation from the minimum intrinsic viscosity were consistent with that measured by transmission electron microscopy. Suspensions of CNCs with higher surface charge density needed less NaCl to obtain minimum intrinsic viscosity. The NaCl content that should be added to the suspension to predict the actual physical aspect ratio of CNC can be estimated by Debye–Hückel theory, assuming that the Debye length is equal to the CNC diameter.</description><identifier>ISSN: 0969-0239</identifier><identifier>EISSN: 1572-882X</identifier><identifier>DOI: 10.1007/s10570-017-1341-7</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Agglomeration ; Aspect ratio ; Bioorganic Chemistry ; Cellulose ; Ceramics ; Charge density ; Chemistry ; Chemistry and Materials Science ; Composites ; Debye length ; Electric charge ; Glass ; Hydrolysis ; Nanocrystals ; Natural Materials ; Organic Chemistry ; Original Paper ; Physical Chemistry ; Polymer Sciences ; Sodium hydroxide ; Sulfuric acid ; Surface charge ; Sustainable Development ; Transmission electron microscopy ; Viscosity ; Viscosity measurement</subject><ispartof>Cellulose (London), 2017-08, Vol.24 (8), p.3255-3264</ispartof><rights>Springer Science+Business Media Dordrecht 2017</rights><rights>Copyright Springer Science & Business Media 2017</rights><rights>Cellulose is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c410t-d3c589a341d16265dd4a9c8999712d227316bf01e66019f17842af771d57bf0c3</citedby><cites>FETCH-LOGICAL-c410t-d3c589a341d16265dd4a9c8999712d227316bf01e66019f17842af771d57bf0c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10570-017-1341-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10570-017-1341-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Wu, Qiang</creatorcontrib><creatorcontrib>Li, Xiuwen</creatorcontrib><creatorcontrib>Fu, Shenyuan</creatorcontrib><creatorcontrib>Li, Qian</creatorcontrib><creatorcontrib>Wang, Siqun</creatorcontrib><title>Estimation of aspect ratio of cellulose nanocrystals by viscosity measurement: influence of surface charge density and NaCl concentration</title><title>Cellulose (London)</title><addtitle>Cellulose</addtitle><description>Cellulose nanocrystals (CNCs) with similar size and various surface charge densities were prepared by sulfuric acid hydrolysis and NaOH desulfation. The influence of surface charge density and NaCl concentration on the intrinsic viscosity of CNC suspensions and predicted aspect ratio were investigated by Ubbelohde viscometer. With decreased CNC surface charge density, the intrinsic viscosity initially decreased due to the electric double layers on the CNC surface and subsequently increased due to CNC aggregation. To screen electroviscous effect, NaCl was added into CNC suspensions. With increased NaCl concentration, the intrinsic viscosity of CNC suspensions first decreased and then increased. The aspect ratios of CNCs predicted by Batchelor equation from the minimum intrinsic viscosity were consistent with that measured by transmission electron microscopy. Suspensions of CNCs with higher surface charge density needed less NaCl to obtain minimum intrinsic viscosity. The NaCl content that should be added to the suspension to predict the actual physical aspect ratio of CNC can be estimated by Debye–Hückel theory, assuming that the Debye length is equal to the CNC diameter.</description><subject>Agglomeration</subject><subject>Aspect ratio</subject><subject>Bioorganic Chemistry</subject><subject>Cellulose</subject><subject>Ceramics</subject><subject>Charge density</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Composites</subject><subject>Debye length</subject><subject>Electric charge</subject><subject>Glass</subject><subject>Hydrolysis</subject><subject>Nanocrystals</subject><subject>Natural Materials</subject><subject>Organic Chemistry</subject><subject>Original Paper</subject><subject>Physical Chemistry</subject><subject>Polymer Sciences</subject><subject>Sodium hydroxide</subject><subject>Sulfuric acid</subject><subject>Surface charge</subject><subject>Sustainable Development</subject><subject>Transmission electron microscopy</subject><subject>Viscosity</subject><subject>Viscosity measurement</subject><issn>0969-0239</issn><issn>1572-882X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kctOxCAYhYnRxHH0AdyRuK7y0wvFnZmMl2SiG03cEYbC2EkHRqAmfQTfWmpduNGwAE7Od_7AQegcyCUQwq4CkJKRjADLIC8gYwdoBiWjWV3T10M0I7ziGaE5P0YnIWwJIZxRmKHPZYjtTsbWWewMlmGvVcR-FMa70l3Xdy5obKV1yg8hyi7g9YA_2qBcaOOAd1qG3uudtvEat9Z0vbZKj3SSjUxH9Sb9RuNG229A2gY_ykWHlUtGG7-n2VN0ZFK2PvvZ5-jldvm8uM9WT3cPi5tVpgogMWtyVdZcpjc2UNGqbJpCclVzzhnQhlKWQ7U2BHRVEeAGWF1QaRiDpmRJV_kcXUy5e-_eex2i2Lre2zRSUFpyTjnh9D8X8LQoLxhLLphcyrsQvDZi79Nv-kEAEWMvYupFpF7E2IsYGToxIXntRvtfyX9CXxBnkYE</recordid><startdate>20170801</startdate><enddate>20170801</enddate><creator>Wu, Qiang</creator><creator>Li, Xiuwen</creator><creator>Fu, Shenyuan</creator><creator>Li, Qian</creator><creator>Wang, Siqun</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20170801</creationdate><title>Estimation of aspect ratio of cellulose nanocrystals by viscosity measurement: influence of surface charge density and NaCl concentration</title><author>Wu, Qiang ; Li, Xiuwen ; Fu, Shenyuan ; Li, Qian ; Wang, Siqun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c410t-d3c589a341d16265dd4a9c8999712d227316bf01e66019f17842af771d57bf0c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Agglomeration</topic><topic>Aspect ratio</topic><topic>Bioorganic Chemistry</topic><topic>Cellulose</topic><topic>Ceramics</topic><topic>Charge density</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Composites</topic><topic>Debye length</topic><topic>Electric charge</topic><topic>Glass</topic><topic>Hydrolysis</topic><topic>Nanocrystals</topic><topic>Natural Materials</topic><topic>Organic Chemistry</topic><topic>Original Paper</topic><topic>Physical Chemistry</topic><topic>Polymer Sciences</topic><topic>Sodium hydroxide</topic><topic>Sulfuric acid</topic><topic>Surface charge</topic><topic>Sustainable Development</topic><topic>Transmission electron microscopy</topic><topic>Viscosity</topic><topic>Viscosity measurement</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Qiang</creatorcontrib><creatorcontrib>Li, Xiuwen</creatorcontrib><creatorcontrib>Fu, Shenyuan</creatorcontrib><creatorcontrib>Li, Qian</creatorcontrib><creatorcontrib>Wang, Siqun</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Cellulose (London)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Qiang</au><au>Li, Xiuwen</au><au>Fu, Shenyuan</au><au>Li, Qian</au><au>Wang, Siqun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Estimation of aspect ratio of cellulose nanocrystals by viscosity measurement: influence of surface charge density and NaCl concentration</atitle><jtitle>Cellulose (London)</jtitle><stitle>Cellulose</stitle><date>2017-08-01</date><risdate>2017</risdate><volume>24</volume><issue>8</issue><spage>3255</spage><epage>3264</epage><pages>3255-3264</pages><issn>0969-0239</issn><eissn>1572-882X</eissn><abstract>Cellulose nanocrystals (CNCs) with similar size and various surface charge densities were prepared by sulfuric acid hydrolysis and NaOH desulfation. The influence of surface charge density and NaCl concentration on the intrinsic viscosity of CNC suspensions and predicted aspect ratio were investigated by Ubbelohde viscometer. With decreased CNC surface charge density, the intrinsic viscosity initially decreased due to the electric double layers on the CNC surface and subsequently increased due to CNC aggregation. To screen electroviscous effect, NaCl was added into CNC suspensions. With increased NaCl concentration, the intrinsic viscosity of CNC suspensions first decreased and then increased. The aspect ratios of CNCs predicted by Batchelor equation from the minimum intrinsic viscosity were consistent with that measured by transmission electron microscopy. Suspensions of CNCs with higher surface charge density needed less NaCl to obtain minimum intrinsic viscosity. The NaCl content that should be added to the suspension to predict the actual physical aspect ratio of CNC can be estimated by Debye–Hückel theory, assuming that the Debye length is equal to the CNC diameter.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10570-017-1341-7</doi><tpages>10</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Agglomeration Aspect ratio Bioorganic Chemistry Cellulose Ceramics Charge density Chemistry Chemistry and Materials Science Composites Debye length Electric charge Glass Hydrolysis Nanocrystals Natural Materials Organic Chemistry Original Paper Physical Chemistry Polymer Sciences Sodium hydroxide Sulfuric acid Surface charge Sustainable Development Transmission electron microscopy Viscosity Viscosity measurement |
| title | Estimation of aspect ratio of cellulose nanocrystals by viscosity measurement: influence of surface charge density and NaCl concentration |
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