Ring-opening polymerization ofl-lactide with silica supported titanium alkoxide catalysts
TiCl(O- i -Pr) 3 /SiO 2 and Ti(O- i -Pr) 4 /SiO 2 were prepared by immobilizing chlorotitanium (IV) isopropoxide (TiCl(O- i -Pr) 3 ) and titanium (IV) isopropoxide (Ti(O- i -Pr) 4 ), to pretreated silica. The effect of the polymerization reaction conditions on the catalytic activity and characterist...
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| Veröffentlicht in: | Macromolecular research 2009-05, Vol.17 (5), p.346-351 |
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| container_title | Macromolecular research |
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| creator | Kim, Eonah Shin, Eun Woo Yoo, Ik-Keun Chung, Jin Suk Hong, Younjin Kim, Youngjo |
| description | TiCl(O-
i
-Pr)
3
/SiO
2
and Ti(O-
i
-Pr)
4
/SiO
2
were prepared by immobilizing chlorotitanium (IV) isopropoxide (TiCl(O-
i
-Pr)
3
) and titanium (IV) isopropoxide (Ti(O-
i
-Pr)
4
), to pretreated silica. The effect of the polymerization reaction conditions on the catalytic activity and characteristics of the resulting PLA were investigated. The catalytic conversion, molecular weight and polydispersity index (PDI) of the PLA produced on the titanium alkoxide supported catalysts increased proportionally with the reaction temperature. When the PLA was synthesized in bulk polymerization, the PLA produced with the supported catalysts had higher molecular weight than those with homogeneous catalysts. The melting temperature of the polymer produced with silica supported alkoxide catalysts was approximately 170-180 °C. |
| doi_str_mv | 10.1007/BF03218873 |
| format | Article |
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i
-Pr)
3
/SiO
2
and Ti(O-
i
-Pr)
4
/SiO
2
were prepared by immobilizing chlorotitanium (IV) isopropoxide (TiCl(O-
i
-Pr)
3
) and titanium (IV) isopropoxide (Ti(O-
i
-Pr)
4
), to pretreated silica. The effect of the polymerization reaction conditions on the catalytic activity and characteristics of the resulting PLA were investigated. The catalytic conversion, molecular weight and polydispersity index (PDI) of the PLA produced on the titanium alkoxide supported catalysts increased proportionally with the reaction temperature. When the PLA was synthesized in bulk polymerization, the PLA produced with the supported catalysts had higher molecular weight than those with homogeneous catalysts. The melting temperature of the polymer produced with silica supported alkoxide catalysts was approximately 170-180 °C.</description><identifier>ISSN: 1598-5032</identifier><identifier>EISSN: 2092-7673</identifier><identifier>DOI: 10.1007/BF03218873</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Characterization and Evaluation of Materials ; Chemistry ; Chemistry and Materials Science ; Complex Fluids and Microfluidics ; Nanochemistry ; Nanotechnology ; Physical Chemistry ; Polymer Sciences ; Soft and Granular Matter</subject><ispartof>Macromolecular research, 2009-05, Vol.17 (5), p.346-351</ispartof><rights>The Polymer Society of Korea and Springer 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1123-40e9d803b71580c7ad3261d107caac6dad065034a7a7f609770869d8eefdd0a53</citedby><cites>FETCH-LOGICAL-c1123-40e9d803b71580c7ad3261d107caac6dad065034a7a7f609770869d8eefdd0a53</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/BF03218873$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/BF03218873$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Kim, Eonah</creatorcontrib><creatorcontrib>Shin, Eun Woo</creatorcontrib><creatorcontrib>Yoo, Ik-Keun</creatorcontrib><creatorcontrib>Chung, Jin Suk</creatorcontrib><creatorcontrib>Hong, Younjin</creatorcontrib><creatorcontrib>Kim, Youngjo</creatorcontrib><title>Ring-opening polymerization ofl-lactide with silica supported titanium alkoxide catalysts</title><title>Macromolecular research</title><addtitle>Macromol. Res</addtitle><description>TiCl(O-
i
-Pr)
3
/SiO
2
and Ti(O-
i
-Pr)
4
/SiO
2
were prepared by immobilizing chlorotitanium (IV) isopropoxide (TiCl(O-
i
-Pr)
3
) and titanium (IV) isopropoxide (Ti(O-
i
-Pr)
4
), to pretreated silica. The effect of the polymerization reaction conditions on the catalytic activity and characteristics of the resulting PLA were investigated. The catalytic conversion, molecular weight and polydispersity index (PDI) of the PLA produced on the titanium alkoxide supported catalysts increased proportionally with the reaction temperature. When the PLA was synthesized in bulk polymerization, the PLA produced with the supported catalysts had higher molecular weight than those with homogeneous catalysts. The melting temperature of the polymer produced with silica supported alkoxide catalysts was approximately 170-180 °C.</description><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Complex Fluids and Microfluidics</subject><subject>Nanochemistry</subject><subject>Nanotechnology</subject><subject>Physical Chemistry</subject><subject>Polymer Sciences</subject><subject>Soft and Granular Matter</subject><issn>1598-5032</issn><issn>2092-7673</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNptkEFLAzEUhIMoWKsXf0HOSvRl093sHrVYFQqC6MHT8kyyNTXdLEmKrb_elApePM1hvhmGIeScwxUHkNe3MxAFr2spDsiogKZgspLikIx42dSszOYxOYlxCVBxwfmIvD3bfsH8YPqsdPBuuzLBfmOyvqe-c8yhSlYb-mXTB43WWYU0rofBh2Q0TTZhb9criu7Tb3acwoRuG1M8JUcdumjOfnVMXmd3L9MHNn-6f5zezJnivBBsAqbRNYh3ycsalEQtioprDlIhqkqjhirvnqBE2VXQSAl1lRPGdFoDlmJMLva9KvgYg-naIdgVhm3Lod2d0v6dkuHLPRwz1C9MaJd-Hfq87z_6B4JdY3Q</recordid><startdate>200905</startdate><enddate>200905</enddate><creator>Kim, Eonah</creator><creator>Shin, Eun Woo</creator><creator>Yoo, Ik-Keun</creator><creator>Chung, Jin Suk</creator><creator>Hong, Younjin</creator><creator>Kim, Youngjo</creator><general>Springer-Verlag</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>200905</creationdate><title>Ring-opening polymerization ofl-lactide with silica supported titanium alkoxide catalysts</title><author>Kim, Eonah ; Shin, Eun Woo ; Yoo, Ik-Keun ; Chung, Jin Suk ; Hong, Younjin ; Kim, Youngjo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1123-40e9d803b71580c7ad3261d107caac6dad065034a7a7f609770869d8eefdd0a53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Complex Fluids and Microfluidics</topic><topic>Nanochemistry</topic><topic>Nanotechnology</topic><topic>Physical Chemistry</topic><topic>Polymer Sciences</topic><topic>Soft and Granular Matter</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Eonah</creatorcontrib><creatorcontrib>Shin, Eun Woo</creatorcontrib><creatorcontrib>Yoo, Ik-Keun</creatorcontrib><creatorcontrib>Chung, Jin Suk</creatorcontrib><creatorcontrib>Hong, Younjin</creatorcontrib><creatorcontrib>Kim, Youngjo</creatorcontrib><collection>CrossRef</collection><jtitle>Macromolecular research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Eonah</au><au>Shin, Eun Woo</au><au>Yoo, Ik-Keun</au><au>Chung, Jin Suk</au><au>Hong, Younjin</au><au>Kim, Youngjo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ring-opening polymerization ofl-lactide with silica supported titanium alkoxide catalysts</atitle><jtitle>Macromolecular research</jtitle><stitle>Macromol. Res</stitle><date>2009-05</date><risdate>2009</risdate><volume>17</volume><issue>5</issue><spage>346</spage><epage>351</epage><pages>346-351</pages><issn>1598-5032</issn><eissn>2092-7673</eissn><abstract>TiCl(O-
i
-Pr)
3
/SiO
2
and Ti(O-
i
-Pr)
4
/SiO
2
were prepared by immobilizing chlorotitanium (IV) isopropoxide (TiCl(O-
i
-Pr)
3
) and titanium (IV) isopropoxide (Ti(O-
i
-Pr)
4
), to pretreated silica. The effect of the polymerization reaction conditions on the catalytic activity and characteristics of the resulting PLA were investigated. The catalytic conversion, molecular weight and polydispersity index (PDI) of the PLA produced on the titanium alkoxide supported catalysts increased proportionally with the reaction temperature. When the PLA was synthesized in bulk polymerization, the PLA produced with the supported catalysts had higher molecular weight than those with homogeneous catalysts. The melting temperature of the polymer produced with silica supported alkoxide catalysts was approximately 170-180 °C.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/BF03218873</doi><tpages>6</tpages></addata></record> |
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| ispartof | Macromolecular research, 2009-05, Vol.17 (5), p.346-351 |
| issn | 1598-5032 2092-7673 |
| language | eng |
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| source | SpringerLink Journals - AutoHoldings |
| subjects | Characterization and Evaluation of Materials Chemistry Chemistry and Materials Science Complex Fluids and Microfluidics Nanochemistry Nanotechnology Physical Chemistry Polymer Sciences Soft and Granular Matter |
| title | Ring-opening polymerization ofl-lactide with silica supported titanium alkoxide catalysts |
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