Nano, micro, and bulk structures in atactic polystyrene - syndiotactic polystyrene blends obtained in situ in presence of the CpTiCl3 /SiO2 /MAO catalysts (Cp - cyclopentadienyl, MAO - methylaluminoxane)
Authors:
- W. Skupiński,
- A. Plewka,
- Z. Wieczorek,
- Leszek Wachowski,
- Magdalena Hofman-Bieniek,
- B. Czajka
Abstract
CpTiCl3/SiO2/MAO (Cp=cyclopentadienyl, MAO - methylaluminoxane) catalysts, where the Al:Ti varies from 20:1 to 500:1, were used in styrene polymerization. Atactic - syndiotactic polystyrene blends (aPS-sPS) were obtained in situ, the morphology of which was investigated by means of scanning electron microscopy. The blends morphology changed according to the kind of catalytic centers: cationic and syndiotactic on the catalyst surface, which create individually atactic or syndiotactic polystyrenes forming specific blends containing nano or micro-forms: when the Al:Ti ranges from 50:1 and to 100:1 in the blends, there occur nano-sPS particles 40-120nm in size, if the Al:Ti≥300:1, the filament of δ-sPS polymorph, is produced where the filament size ranged from 30 to 10nm. A decay of this form leads to the formation of spherical sPS forms several hundreds of nm in size. When the Al:Ti ranges 20:1-50:1, blend rods of several dozen micrometers were obtained. © 2013 Elsevier Inc.
- Record ID
- UAM56330b8a78714a8c87885b9d1b5e190a
- Author
- Journal series
- Journal of Colloid and Interface Science, ISSN 0021-9797
- Issue year
- 2013
- Vol
- 404
- Pages
- 91-101
- ASJC Classification
- ; ; ;
- DOI
- DOI:10.1016/j.jcis.2013.03.061 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 30
- Score source
- journalList
- Score
- Publication indicators
- = 0; : 2013 = 1.437; : 2013 (2 years) = 3.552 - 2013 (5 years) =3.583
Share
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAM56330b8a78714a8c87885b9d1b5e190a/
- URN
urn:amu-prod:UAM56330b8a78714a8c87885b9d1b5e190a
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.