“String and bead” model of copper modified polycarbosilane: synthesis and applications
The synthesis of metal modified polycarbosilanes is currently an area of significant activity. These polymers can be processed to advanced materials such as ceramic fibers, coatings, or ceramics stable at ultra-high temperatures (up to 2000 °C). Exact structures of these advanced polymers are still...
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| Veröffentlicht in: | Journal of materials science 2022-07, Vol.57 (26), p.12393-12404 |
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| creator | Vipin Vijay, V. Sajeev, Lavanya B. Anjana, S. Balachandran, Nisha Srinivas, Chinthalappalli Vijayalekshmi, K. P. Sreejith, K. J. Devasia, Renjith |
| description | The synthesis of metal modified polycarbosilanes is currently an area of significant activity. These polymers can be processed to advanced materials such as ceramic fibers, coatings, or ceramics stable at ultra-high temperatures (up to 2000 °C). Exact structures of these advanced polymers are still not clearly understood. Herein, we report the successful synthesis, structure elucidation and catalytic application of copper modified polycarbosilane. A highly cross-linked “string and bead” structure is proposed for copper modified polycarbosilane synthesized in this study, where the beads corresponds to the evenly distributed copper particles and the string to the interconnected PCS matrix. The effect of Cu-PCS on the thermal decomposition of ammonium perchlorate was investigated by means of thermogravimetry. The high-temperature decomposition of ammonium perchlorate was decreased by 28 °C by the addition of 0.5 wt% of Cu-PCS. The model structure of metal-modified polycarbosilane proposed in this study can be viewed as an ideal heterogeneous catalyst system, and therefore the present study can be used as a pilot for future projects to produce efficient heterogeneous catalysts.
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| doi_str_mv | 10.1007/s10853-022-07392-5 |
| format | Article |
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Graphical abstract</description><subject>Ammonium perchlorates</subject><subject>Beads</subject><subject>Catalysts</subject><subject>Ceramic coatings</subject><subject>Ceramic fibers</subject><subject>Ceramic materials</subject><subject>Ceramics</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemical Routes to Materials</subject><subject>Chemical synthesis</subject><subject>Chemistry and Materials Science</subject><subject>Classical Mechanics</subject><subject>Coatings</subject><subject>Copper</subject><subject>Crystallography and Scattering Methods</subject><subject>Materials Science</subject><subject>Polycarbosilanes</subject><subject>Polymer Sciences</subject><subject>Polymers</subject><subject>Solid Mechanics</subject><subject>Strings</subject><subject>Thermal decomposition</subject><subject>Thermogravimetry</subject><subject>Ultrahigh temperature</subject><issn>0022-2461</issn><issn>1573-4803</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kcFO3DAQhq0KJJalL8ApEqceArbHjhNuaNUC0kqVClx6sbzOeGuUjYOdlbo3HgRejichIZXQXqo5WGN_39jyT8gpo-eMUnWRGC0l5JTznCqoeC6_kBmTCnJRUjggMzoecVGwI3Kc0iOlVCrOZuT32_PLXR99u85MW2crNPXb82u2CTU2WXCZDV2Hcey981hnXWh21sRVSL4xLV5madf2fzD59OGbrmu8Nb0PbTohh840Cb_-W-fk4cf3-8VNvvx5fbu4WuYWBPQ5cMNrFA5XBpwAzs2KKYtWFo4VUFVSFYXjyKkSlktHgaI0jJUgDWAlC5iTs2luF8PTFlOvH8M2tsOVmhelUCWwUgzU-UStTYPaty700dihatx4G1p0fti_UrQCIQUfhW97wsD0-Ldfm21K-vbu1z7LJ9bGkFJEp7voNybuNKN6DEhPAekhBf0RkJaDBJOUuvH_MX6--z_WOx8Ok9Y</recordid><startdate>20220701</startdate><enddate>20220701</enddate><creator>Vipin Vijay, V.</creator><creator>Sajeev, Lavanya B.</creator><creator>Anjana, S.</creator><creator>Balachandran, Nisha</creator><creator>Srinivas, Chinthalappalli</creator><creator>Vijayalekshmi, K. 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P.</au><au>Sreejith, K. J.</au><au>Devasia, Renjith</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>“String and bead” model of copper modified polycarbosilane: synthesis and applications</atitle><jtitle>Journal of materials science</jtitle><stitle>J Mater Sci</stitle><date>2022-07-01</date><risdate>2022</risdate><volume>57</volume><issue>26</issue><spage>12393</spage><epage>12404</epage><pages>12393-12404</pages><issn>0022-2461</issn><eissn>1573-4803</eissn><abstract>The synthesis of metal modified polycarbosilanes is currently an area of significant activity. These polymers can be processed to advanced materials such as ceramic fibers, coatings, or ceramics stable at ultra-high temperatures (up to 2000 °C). Exact structures of these advanced polymers are still not clearly understood. Herein, we report the successful synthesis, structure elucidation and catalytic application of copper modified polycarbosilane. A highly cross-linked “string and bead” structure is proposed for copper modified polycarbosilane synthesized in this study, where the beads corresponds to the evenly distributed copper particles and the string to the interconnected PCS matrix. The effect of Cu-PCS on the thermal decomposition of ammonium perchlorate was investigated by means of thermogravimetry. The high-temperature decomposition of ammonium perchlorate was decreased by 28 °C by the addition of 0.5 wt% of Cu-PCS. The model structure of metal-modified polycarbosilane proposed in this study can be viewed as an ideal heterogeneous catalyst system, and therefore the present study can be used as a pilot for future projects to produce efficient heterogeneous catalysts.
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| subjects | Ammonium perchlorates Beads Catalysts Ceramic coatings Ceramic fibers Ceramic materials Ceramics Characterization and Evaluation of Materials Chemical Routes to Materials Chemical synthesis Chemistry and Materials Science Classical Mechanics Coatings Copper Crystallography and Scattering Methods Materials Science Polycarbosilanes Polymer Sciences Polymers Solid Mechanics Strings Thermal decomposition Thermogravimetry Ultrahigh temperature |
| title | “String and bead” model of copper modified polycarbosilane: synthesis and applications |
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