Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene
Ziegler-Natta isotactic polypropylene (iPP) was melt mixed with four different nucleating agents (carbon nanotubes (CNT), carbon nanofibers (CNF), lithium benzoate (LiBe), and a sorbitol derivative (Millad)) in order to study their effect on the crystallization of iPP. It was found that the four dif...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2016/9839201 |
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| author | Felipe Avalos-Belmontes Luis Francisco Ramos-deValle Adriana Berenice Espinoza-Martínez Juan Guillermo Martínez-Colunga Eduardo Ramírez-Vargas Saul Sánchez-Valdés Jose Carlos Ortíz-Cisneros Esperanza Elizabeth Martínez-Segovia Flora Itzel Beltrán-Ramírez |
| author_facet | Felipe Avalos-Belmontes Luis Francisco Ramos-deValle Adriana Berenice Espinoza-Martínez Juan Guillermo Martínez-Colunga Eduardo Ramírez-Vargas Saul Sánchez-Valdés Jose Carlos Ortíz-Cisneros Esperanza Elizabeth Martínez-Segovia Flora Itzel Beltrán-Ramírez |
| author_sort | Felipe Avalos-Belmontes |
| collection | DOAJ |
| description | Ziegler-Natta isotactic polypropylene (iPP) was melt mixed with four different nucleating agents (carbon nanotubes (CNT), carbon nanofibers (CNF), lithium benzoate (LiBe), and a sorbitol derivative (Millad)) in order to study their effect on the crystallization of iPP. It was found that the four different nucleating agents promote the alpha crystalline form. At 0.01 wt%, the carbon nanoparticles produced the higher crystallization temperature “Tc” (~119°C), whereas, at 0.10 wt%, LiBe and Millad produced a markedly higher Tc (~125°C). Tc of pure iPP was 111°C. With 0.1 wt% nucleating agent, at 120°C, the crystallization half-life time of PP, when using LiBe or Millad, was 15 times faster than for pure PP, whereas, when using carbon nanoparticles, it was 20–25 times faster. At 135°C, with 0.01 wt% nucleating agent, the isothermal crystallization process of iPP was completed after 25 min, as well as with Millad. With LiBe, it was completed after just 15 min and, with any of the carbon nanoparticles, it was practically over after only a couple of minutes. |
| format | Article |
| id | doaj-art-10a34014ff804943bdd632106f540b07 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-10a34014ff804943bdd632106f540b072025-02-03T05:58:20ZengWileyInternational Journal of Polymer Science1687-94221687-94302016-01-01201610.1155/2016/98392019839201Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic PolypropyleneFelipe Avalos-Belmontes0Luis Francisco Ramos-deValle1Adriana Berenice Espinoza-Martínez2Juan Guillermo Martínez-Colunga3Eduardo Ramírez-Vargas4Saul Sánchez-Valdés5Jose Carlos Ortíz-Cisneros6Esperanza Elizabeth Martínez-Segovia7Flora Itzel Beltrán-Ramírez8Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila (UAdeC), Boulevard V. Carranza and González-Lobo, 25000 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de Coahuila (UAdeC), Boulevard V. Carranza and González-Lobo, 25000 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoCentro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, 25294 Saltillo, COAH, MexicoZiegler-Natta isotactic polypropylene (iPP) was melt mixed with four different nucleating agents (carbon nanotubes (CNT), carbon nanofibers (CNF), lithium benzoate (LiBe), and a sorbitol derivative (Millad)) in order to study their effect on the crystallization of iPP. It was found that the four different nucleating agents promote the alpha crystalline form. At 0.01 wt%, the carbon nanoparticles produced the higher crystallization temperature “Tc” (~119°C), whereas, at 0.10 wt%, LiBe and Millad produced a markedly higher Tc (~125°C). Tc of pure iPP was 111°C. With 0.1 wt% nucleating agent, at 120°C, the crystallization half-life time of PP, when using LiBe or Millad, was 15 times faster than for pure PP, whereas, when using carbon nanoparticles, it was 20–25 times faster. At 135°C, with 0.01 wt% nucleating agent, the isothermal crystallization process of iPP was completed after 25 min, as well as with Millad. With LiBe, it was completed after just 15 min and, with any of the carbon nanoparticles, it was practically over after only a couple of minutes.http://dx.doi.org/10.1155/2016/9839201 |
| spellingShingle | Felipe Avalos-Belmontes Luis Francisco Ramos-deValle Adriana Berenice Espinoza-Martínez Juan Guillermo Martínez-Colunga Eduardo Ramírez-Vargas Saul Sánchez-Valdés Jose Carlos Ortíz-Cisneros Esperanza Elizabeth Martínez-Segovia Flora Itzel Beltrán-Ramírez Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene International Journal of Polymer Science |
| title | Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene |
| title_full | Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene |
| title_fullStr | Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene |
| title_full_unstemmed | Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene |
| title_short | Effect of Different Nucleating Agents on the Crystallization of Ziegler-Natta Isotactic Polypropylene |
| title_sort | effect of different nucleating agents on the crystallization of ziegler natta isotactic polypropylene |
| url | http://dx.doi.org/10.1155/2016/9839201 |
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