Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions
Elastic and quasi-elastic light-scattering, viscometric and rheological studies are given for solutions of the microbial polysaccharide Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg −1. The observed negative ∂ ln[η] ∂ ln T is interpreted as a...
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| Veröffentlicht in: | Polymer (Guilford) 1988-12, Vol.29 (12), p.2249-2260 |
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| container_title | Polymer (Guilford) |
| container_volume | 29 |
| creator | Kojima, Takakazu Berry, G.C. |
| description | Elastic and quasi-elastic light-scattering, viscometric and rheological studies are given for solutions of the microbial polysaccharide
Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg
−1. The observed negative
∂
ln[η]
∂
ln
T is interpreted as a decrease of the persistence length with increasing
T. The behaviour in moderately concentrated solutions (2 |
| doi_str_mv | 10.1016/0032-3861(88)90119-X |
| format | Article |
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Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg
−1. The observed negative
∂
ln[η]
∂
ln
T is interpreted as a decrease of the persistence length with increasing
T. The behaviour in moderately concentrated solutions (2<[
η]
c<25) reveals intermolecular association, leading to gel formation in the extreme case. The effect of the association on the viscometric and light-scattering data is discussed. It is concluded that the early stages of association involve structure with the chain axes nearly parallel, but that larger, particulate-like structures develop with increasing
c, eventually leading to gel formation under certain conditions.</description><identifier>ISSN: 0032-3861</identifier><identifier>EISSN: 1873-2291</identifier><identifier>DOI: 10.1016/0032-3861(88)90119-X</identifier><identifier>CODEN: POLMAG</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; association ; Exact sciences and technology ; gel ; light scattering ; Natural polymers ; persistence length ; Physicochemistry of polymers ; Starch and polysaccharides ; viscometry ; xanthan</subject><ispartof>Polymer (Guilford), 1988-12, Vol.29 (12), p.2249-2260</ispartof><rights>1988</rights><rights>1989 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-645f9372c6df5cc07287167771d08ffcc164d5575bcbf99fca91b6cee4042bf43</citedby><cites>FETCH-LOGICAL-c364t-645f9372c6df5cc07287167771d08ffcc164d5575bcbf99fca91b6cee4042bf43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/003238618890119X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7197346$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kojima, Takakazu</creatorcontrib><creatorcontrib>Berry, G.C.</creatorcontrib><title>Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions</title><title>Polymer (Guilford)</title><description>Elastic and quasi-elastic light-scattering, viscometric and rheological studies are given for solutions of the microbial polysaccharide
Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg
−1. The observed negative
∂
ln[η]
∂
ln
T is interpreted as a decrease of the persistence length with increasing
T. The behaviour in moderately concentrated solutions (2<[
η]
c<25) reveals intermolecular association, leading to gel formation in the extreme case. The effect of the association on the viscometric and light-scattering data is discussed. It is concluded that the early stages of association involve structure with the chain axes nearly parallel, but that larger, particulate-like structures develop with increasing
c, eventually leading to gel formation under certain conditions.</description><subject>Applied sciences</subject><subject>association</subject><subject>Exact sciences and technology</subject><subject>gel</subject><subject>light scattering</subject><subject>Natural polymers</subject><subject>persistence length</subject><subject>Physicochemistry of polymers</subject><subject>Starch and polysaccharides</subject><subject>viscometry</subject><subject>xanthan</subject><issn>0032-3861</issn><issn>1873-2291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><recordid>eNp9kE1vVCEUhonRxLH6D1ywMEYXtwKXC9yNiWnqRzKJCzXpjjCHQ4u5AyMwjfPvZTqTLl0RwvO-h_MQ8pqzS864-sDYKIbRKP7OmPcz43webp6QFTd6HISY-VOyekSekxe1_maMiUnIFck_8rJvMSe6K3mHpUWsNAf616V259IlXcfbu0YruNawxHRLXfL0PlbIW2zlQHvSx16BDw_b7LG4hsuBQk6AqR1vntbzlPqSPAtuqfjqfF6QX5-vf159Hdbfv3y7-rQeYFSyDUpOYR61AOXDBMC0MJorrTX3zIQAwJX006SnDWzCPAdwM98oQJRMik2Q4wV5e-rta_3ZY2122_-My-IS5n21YmJciMl0UJ5AKLnWgsHuSty6crCc2aNde1Rnj-qsMfbBrr3psTfnftfdLKG4BLE-ZjWf9ShVxz6eMOy73kcstkLELsbHgtCsz_H_c_4B6YCQ5w</recordid><startdate>19881201</startdate><enddate>19881201</enddate><creator>Kojima, Takakazu</creator><creator>Berry, G.C.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>19881201</creationdate><title>Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions</title><author>Kojima, Takakazu ; Berry, G.C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-645f9372c6df5cc07287167771d08ffcc164d5575bcbf99fca91b6cee4042bf43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1988</creationdate><topic>Applied sciences</topic><topic>association</topic><topic>Exact sciences and technology</topic><topic>gel</topic><topic>light scattering</topic><topic>Natural polymers</topic><topic>persistence length</topic><topic>Physicochemistry of polymers</topic><topic>Starch and polysaccharides</topic><topic>viscometry</topic><topic>xanthan</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kojima, Takakazu</creatorcontrib><creatorcontrib>Berry, G.C.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>Polymer (Guilford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kojima, Takakazu</au><au>Berry, G.C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions</atitle><jtitle>Polymer (Guilford)</jtitle><date>1988-12-01</date><risdate>1988</risdate><volume>29</volume><issue>12</issue><spage>2249</spage><epage>2260</epage><pages>2249-2260</pages><issn>0032-3861</issn><eissn>1873-2291</eissn><coden>POLMAG</coden><abstract>Elastic and quasi-elastic light-scattering, viscometric and rheological studies are given for solutions of the microbial polysaccharide
Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg
−1. The observed negative
∂
ln[η]
∂
ln
T is interpreted as a decrease of the persistence length with increasing
T. The behaviour in moderately concentrated solutions (2<[
η]
c<25) reveals intermolecular association, leading to gel formation in the extreme case. The effect of the association on the viscometric and light-scattering data is discussed. It is concluded that the early stages of association involve structure with the chain axes nearly parallel, but that larger, particulate-like structures develop with increasing
c, eventually leading to gel formation under certain conditions.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/0032-3861(88)90119-X</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0032-3861 |
| ispartof | Polymer (Guilford), 1988-12, Vol.29 (12), p.2249-2260 |
| issn | 0032-3861 1873-2291 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_25012258 |
| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences association Exact sciences and technology gel light scattering Natural polymers persistence length Physicochemistry of polymers Starch and polysaccharides viscometry xanthan |
| title | Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions |
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