In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system
In situ ethylene polymerizations were performed using bis(cyclopentadiene)titanium dichloride supported on polyethersulfone as catalyst. The bis(cyclopentadiene)titanium dichloride supported on polyethersulfone catalyst activity estimated by ethylene polymerization was 360 kgPE/molTi/h. During polym...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2011-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000700010&lng=en&tlng=en |
| _version_ | 1818333796098899968 |
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| author | Z. V. P Murthy Parimal A Parikh Smitha Rajesh |
| author_facet | Z. V. P Murthy Parimal A Parikh Smitha Rajesh |
| author_sort | Z. V. P Murthy |
| collection | DOAJ |
| description | In situ ethylene polymerizations were performed using bis(cyclopentadiene)titanium dichloride supported on polyethersulfone as catalyst. The bis(cyclopentadiene)titanium dichloride supported on polyethersulfone catalyst activity estimated by ethylene polymerization was 360 kgPE/molTi/h. During polymerization the fillers used were montmorillionite nanoclays having surface modifications with 35-45 wt% dimethyl dialkyl(14-18)amine (FA) and 25-30 wt% trimethyl stearyl ammonium (FB). These fillers were pretreated with methylaluminoxine (MAO; cocatalyst) for better dispersion onto the polymer matrix. The formation of polyethylene within the whole matrix was confirmed by FTIR studies. It was found that the nature of nanofiller did not have any remarkable effect on the melting characteristics of the polymer. TGA study indicates that nanoclay FB filled polyethylene has higher thermal stability than nanoclay FA filled polyethylene. The melting temperature of the obtained polyethylenes was 142 ºC, which corresponds to that synthesized by the polyether sulfone supported catalyst. |
| first_indexed | 2024-12-13T13:57:19Z |
| format | Article |
| id | doaj.art-be40be1d66094ef1b5a5c7d6537b2c0d |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-12-13T13:57:19Z |
| publishDate | 2011-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-be40be1d66094ef1b5a5c7d6537b2c0d2022-12-21T23:42:52ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642011-01-013471157116210.1590/S0100-40422011000700010S0100-40422011000700010In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst systemZ. V. P Murthy0Parimal A Parikh1Smitha Rajesh2National Institute of TechnologyNational Institute of TechnologyNational Institute of TechnologyIn situ ethylene polymerizations were performed using bis(cyclopentadiene)titanium dichloride supported on polyethersulfone as catalyst. The bis(cyclopentadiene)titanium dichloride supported on polyethersulfone catalyst activity estimated by ethylene polymerization was 360 kgPE/molTi/h. During polymerization the fillers used were montmorillionite nanoclays having surface modifications with 35-45 wt% dimethyl dialkyl(14-18)amine (FA) and 25-30 wt% trimethyl stearyl ammonium (FB). These fillers were pretreated with methylaluminoxine (MAO; cocatalyst) for better dispersion onto the polymer matrix. The formation of polyethylene within the whole matrix was confirmed by FTIR studies. It was found that the nature of nanofiller did not have any remarkable effect on the melting characteristics of the polymer. TGA study indicates that nanoclay FB filled polyethylene has higher thermal stability than nanoclay FA filled polyethylene. The melting temperature of the obtained polyethylenes was 142 ºC, which corresponds to that synthesized by the polyether sulfone supported catalyst.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000700010&lng=en&tlng=ennanoclaypolymeric supportbis(cyclopentadiene)titanium dichloride |
| spellingShingle | Z. V. P Murthy Parimal A Parikh Smitha Rajesh In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system Química Nova nanoclay polymeric support bis(cyclopentadiene)titanium dichloride |
| title | In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system |
| title_full | In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system |
| title_fullStr | In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system |
| title_full_unstemmed | In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system |
| title_short | In situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system |
| title_sort | in situ synthesis of nanoclay filled polyethylene using polymer supported metallocene catalyst system |
| topic | nanoclay polymeric support bis(cyclopentadiene)titanium dichloride |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000700010&lng=en&tlng=en |
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