Optical methods to study the behaviour of supported metallocene catalysts during olefin polymerisation

E-Polymers

Volumn , Issue , 2005, Pages

  Jang, Yong Jun ^a   Bieber, Kirsten ^a   Naundorf, Corinna ^a   Nenov, Nikolay ^a   Klapper, Markus ^a   Müllen, Klaus ^a   Ferrari, Daniela ^b   Knoke, Stefan ^b   Fink, Gerhard ^b  

^a MAX PLANCK INSTITUTE FOR POLYMER RESEARCH   (Germany)

^b MAX PLANCK INSTITUT FÜR KOHLENFORSCHUNG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; FLUORESCENCE; IMAGE PROCESSING; MICROSCOPIC EXAMINATION; MONOMERS; OLEFINS; PARTICLE SIZE ANALYSIS; POLYETHYLENE OXIDES; POLYMERIZATION; POLYPROPYLENE OXIDES;

LASER SCANNING CONFOCAL FLUORESCENCE MICROSCOPY (LSCFM); METALLOCENE; PRESSURE LOCK; VIDEOMICROSCOPY;

CATALYSTS;

EID: 85141654008     PISSN: 16187229     EISSN: 16187229     Source Type: Journal    
DOI: 10.1515/epoly.2005.5.1.132     Document Type: Article

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32. The emulsifier Lutensol AT50 (200 mg) was dissolved in 50 ml of distilled water with stirring for 20 min at 40°C. After cooling to room temperature, styrene (24 mmol, 2.5 g), 4-vinylpyridine (24 mmol, 2.46 g), divinylbenzene (1.8 mmol, 240 mg) and hexadecane (209.2 mg) were added and the mixture was stirred for 30 min at 1000 rpm to form a microemulsion. The emulsion was then treated for 5 min at 75% amplitude with a sonifier in an ice bath. The formed miniemulsion was degassed by bubbling argon through it for 20 min. The initiator V50 (105 mg) was dissolved in 5 ml of distilled water and also degassed with argon. The miniemulsion was heated up to 70°C and the initiator was added. The polymerisation was run over night. The formed dispersion was filtered and dialysed with a stirring cell equipped with a polyether-sulfone membrane. The latex particles were freeze-dried.
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