Ionomeric films of alginic acid
Transparent, flexible films could be made by casting aqueous solutions of alginic acid, but they dissolved in water. When films were made from a solution of alginic acid and multivalent ions, they were still water soluble. However, when alginic acid films were immersed in a solution of salts with mu...
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| Veröffentlicht in: | Journal of food science 1999, Vol.64 (1), p.61-63 |
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| container_title | Journal of food science |
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| creator | Pavlath, A.E Gossett, C Camirand, W Robertson, G.H |
| description | Transparent, flexible films could be made by casting aqueous solutions of alginic acid, but they dissolved in water. When films were made from a solution of alginic acid and multivalent ions, they were still water soluble. However, when alginic acid films were immersed in a solution of salts with multivalent ions, they dissolved in water much more slowly, if at all. Treatment with calcium and zinc resulted in films insoluble in water and their tensile strength increased by an order of magnitude. Iron and magnesium ions had little effect on properties of the films. Copper and aluminum showed intermediate effect, but treatment with cupric ion resulted in a fast crosslinking of the surface without affecting the inside of the film. This resulted in the formation of a tube when opposing surfaces were pulled apart. |
| doi_str_mv | 10.1111/j.1365-2621.1999.tb09861.x |
| format | Article |
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When films were made from a solution of alginic acid and multivalent ions, they were still water soluble. However, when alginic acid films were immersed in a solution of salts with multivalent ions, they dissolved in water much more slowly, if at all. Treatment with calcium and zinc resulted in films insoluble in water and their tensile strength increased by an order of magnitude. Iron and magnesium ions had little effect on properties of the films. Copper and aluminum showed intermediate effect, but treatment with cupric ion resulted in a fast crosslinking of the surface without affecting the inside of the film. 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When films were made from a solution of alginic acid and multivalent ions, they were still water soluble. However, when alginic acid films were immersed in a solution of salts with multivalent ions, they dissolved in water much more slowly, if at all. Treatment with calcium and zinc resulted in films insoluble in water and their tensile strength increased by an order of magnitude. Iron and magnesium ions had little effect on properties of the films. Copper and aluminum showed intermediate effect, but treatment with cupric ion resulted in a fast crosslinking of the surface without affecting the inside of the film. This resulted in the formation of a tube when opposing surfaces were pulled apart.</description><subject>Acids</subject><subject>algin</subject><subject>alginates</subject><subject>aluminum</subject><subject>Biological and medical sciences</subject><subject>Calcium</subject><subject>chemical reactions</subject><subject>Copper</subject><subject>Food industries</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Handling, storage, packaging, transport</subject><subject>Ions</subject><subject>iron</subject><subject>magnesium</subject><subject>molecular conformation</subject><subject>multivalent ions</subject><subject>salts</subject><subject>solubility</subject><subject>Solutions</subject><subject>surfaces</subject><subject>tensile strength</subject><subject>zinc</subject><issn>0022-1147</issn><issn>1750-3841</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqVkE1LKzEUhoNcwV71N1jkbmfMyZlJGhfCpX4rCn4uD5k0kanTTk0q1n9vhim6NpuQ8OR5T17G9oHnkNbBNAeUZSakgBy01vmy4nokIV9tsAGokmc4KuAPG3AuRAZQqC32N8Yp784oB2zvop23MxdqO_R1M4vD1g9N81LP04Wx9WSHbXrTRLe73rfZ4-nJw_g8u749uxj_v85sgQVkE1dIOZHcco5CqpHTYMpSgFA40hPlOXgt0XCHVSHQWi5LUakCReUV97rCbbbfexehfXt3cUnT9j3MUySBLlCVoDBBhz1kQxtjcJ4WoZ6Z8EnAqeuDptT1QV0f1PVB6z5olR7_WyeYaE3jg5nbOv4YFEopdcKOeuyjbtznLwLo8vT4XkISZL2gjku3-haY8EpSpY_Q880ZXV0-6fHz3RV1_F7Pe9OSeQlppsd7wQG50IAlaPwCo3KJhg</recordid><startdate>1999</startdate><enddate>1999</enddate><creator>Pavlath, A.E</creator><creator>Gossett, C</creator><creator>Camirand, W</creator><creator>Robertson, G.H</creator><general>Blackwell Publishing Ltd</general><general>Institute of Food Technologists</general><general>Wiley Subscription Services, Inc</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7QR</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope></search><sort><creationdate>1999</creationdate><title>Ionomeric films of alginic acid</title><author>Pavlath, A.E ; Gossett, C ; Camirand, W ; Robertson, G.H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4341-de466d60c0032678e91a552127389d7f01f963a0e3b423cc0652b7432bf70f9b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Acids</topic><topic>algin</topic><topic>alginates</topic><topic>aluminum</topic><topic>Biological and medical sciences</topic><topic>Calcium</topic><topic>chemical reactions</topic><topic>Copper</topic><topic>Food industries</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Handling, storage, packaging, transport</topic><topic>Ions</topic><topic>iron</topic><topic>magnesium</topic><topic>molecular conformation</topic><topic>multivalent ions</topic><topic>salts</topic><topic>solubility</topic><topic>Solutions</topic><topic>surfaces</topic><topic>tensile strength</topic><topic>zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pavlath, A.E</creatorcontrib><creatorcontrib>Gossett, C</creatorcontrib><creatorcontrib>Camirand, W</creatorcontrib><creatorcontrib>Robertson, G.H</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Journal of food science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pavlath, A.E</au><au>Gossett, C</au><au>Camirand, W</au><au>Robertson, G.H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ionomeric films of alginic acid</atitle><jtitle>Journal of food science</jtitle><date>1999</date><risdate>1999</risdate><volume>64</volume><issue>1</issue><spage>61</spage><epage>63</epage><pages>61-63</pages><issn>0022-1147</issn><eissn>1750-3841</eissn><coden>JFDSAZ</coden><abstract>Transparent, flexible films could be made by casting aqueous solutions of alginic acid, but they dissolved in water. When films were made from a solution of alginic acid and multivalent ions, they were still water soluble. However, when alginic acid films were immersed in a solution of salts with multivalent ions, they dissolved in water much more slowly, if at all. Treatment with calcium and zinc resulted in films insoluble in water and their tensile strength increased by an order of magnitude. Iron and magnesium ions had little effect on properties of the films. Copper and aluminum showed intermediate effect, but treatment with cupric ion resulted in a fast crosslinking of the surface without affecting the inside of the film. This resulted in the formation of a tube when opposing surfaces were pulled apart.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1365-2621.1999.tb09861.x</doi><tpages>3</tpages></addata></record> |
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| ispartof | Journal of food science, 1999, Vol.64 (1), p.61-63 |
| issn | 0022-1147 1750-3841 |
| language | eng |
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| source | Access via Wiley Online Library |
| subjects | Acids algin alginates aluminum Biological and medical sciences Calcium chemical reactions Copper Food industries Fundamental and applied biological sciences. Psychology General aspects Handling, storage, packaging, transport Ions iron magnesium molecular conformation multivalent ions salts solubility Solutions surfaces tensile strength zinc |
| title | Ionomeric films of alginic acid |
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