Metallocene-Catalysed Copolymerisation of Ethylene with 10-Undecenoic Acid: The Effect of Experimental Conditions

Santos, Jorge Moniz; Ribeiro, M. Rosário; Portela, M.F.; Pereira, Sónia; Nunes, Teresa; Deffieux, Alain

doi:10.1002/1521-3935(20010701)202:11<2195::aid-macp2195>3.0.co;2-q

Cited by 15 publications

(9 citation statements)

References 7 publications

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“…The copolymerization was started with the introduction in the reactor of the pre-activated catalyst. An ethylene-co-undecenoic acid copolymer (PEU) was obtained with an undecenoic acid content of 2.3 mol % as determined [25] by 1 H NMR.…”

Section: Polymerizationmentioning

confidence: 99%

Thermo and photo-oxidation of functionalized metallocene high density polyethylene: Effect of hydrophilic groups

Orden

Montes

Urreaga

et al. 2015

Polymer Degradation and Stability

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Many of the applications (packaging, bottles, films and pipes manufacture, among others) of high density polyethylene, HDPE (the most crystalline of the commercially available PEs) are based on its chemical inertness. Although this is an advantage along the shelf life for a specific product, inertness becomes an enormous shortcoming after its useful service when proper recycling processes are not viable, since the natural decomposition process can span over many decades [1-4]. Therefore, the need for degradable polyolefins has become a hot topic in research to manage those environmental problems. An ideal solution would be the obtainment of degradable polyolefins capable of retaining functionality as Thermo and photo-oxidation of functionalized metallocene high density polyethylene: Effect of hydrophilic groups M.U. de la Orden a, b, *

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Section: Polymerizationmentioning

confidence: 99%

Thermo and photo-oxidation of functionalized metallocene high density polyethylene: Effect of hydrophilic groups

Orden

Montes

Urreaga

et al. 2015

Polymer Degradation and Stability

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“…In the last years several groups have studied the copolymerization of olefins with different polar comonomers. [1,8,[13][14][15][16][17][18][19][20][21][22] Experimental Part Materials Toluene (Fluka, p.a.) was dried over sodium/ potassium and distilled prior to use.…”

Section: Full Papermentioning

confidence: 99%

Kinetic Studies of Metallocene‐Catalyzed Copolymerization of Propene with 10‐Undecene‐1‐ol Using In‐Line FTIR Spectroscopy

Sahre

Schulze

Eichhorn

et al. 2007

Macro Chemistry & Physics

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The present study describes the quantitative monitoring of the metallocene‐catalyzed copolymerization of propene with 10‐undecene‐1‐ol (UO) by in‐line ATR‐FTIR spectroscopy in order to obtain kinetic data. For the description of the time dependency of this copolymerization reaction a pseudo‐first‐order rate law was used. The apparent rate constant kapp of the comonomer consumption could be determined by evaluation of the integral absorbances of characteristic IR bands of the double bond of UO and of special IR determined concentration profiles of that comonomer using chemometric tools. The apparent rate constants determined by the integral absorbances of the ν CC band (stretching vibrations) range of 0.32–0.66 × 10−4 s−1 whereas evaluation of the absolute concentrations of the comonomer yields rate constants of 0.29–0.57 × 10−4 s−1. Variations within the rate constants obtained from different experimental runs point to a certain complexity of the reaction and a significant dependence of the copolymerization on the exact polymerization procedure.magnified image

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“…In recent years, the metallocene‐catalyzed copolymerization of propene with polar monomers has been described, comprising the pre‐reaction of the comonomer with aluminum alkyls 1–9. The corresponding reaction pathway is demonstrated in Scheme .…”

Section: Introductionmentioning

confidence: 99%

Defined Comonomer Re‐Feeding During the Metallocene‐Catalyzed Copolymerization of 10‐Undecene‐1‐olate with Propene through FTIR In‐Line Monitoring

Sahre

Schulze

Eichhorn

et al. 2009

Macro Materials & Eng

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The consumption of 10‐undecene‐1‐olate (UOA) during its continuous re‐feeding in the metallocene‐catalyzed copolymerization with propene was investigated by ATR‐FTIR spectroscopy in‐line monitoring through evaluation of the integral absorbances of the characteristic IR bands. For the quantitative determination of the comonomer concentration during the copolymerization reaction with and without continuous re‐feeding of UOA, multiple calibration functions based on the chemometric partial least squares method were applied. For the first time, a direct correlation between the consumption of an olefin and the addition of a polar comonomer during a metallocene‐catalyzed copolymerization was demonstrated. By means of this technique, a relatively constant molar stoichiometric ratio of the comonomer and propene over the whole polymerization time was achieved, which is very important in obtaining copolymers with defined random structure and, thus, from the point of view of reaction engineering, constant product quality.

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Metallocene-Catalysed Copolymerisation of Ethylene with 10-Undecenoic Acid: The Effect of Experimental Conditions

Cited by 15 publications

References 7 publications

Thermo and photo-oxidation of functionalized metallocene high density polyethylene: Effect of hydrophilic groups

Thermo and photo-oxidation of functionalized metallocene high density polyethylene: Effect of hydrophilic groups

Kinetic Studies of Metallocene‐Catalyzed Copolymerization of Propene with 10‐Undecene‐1‐ol Using In‐Line FTIR Spectroscopy

Defined Comonomer Re‐Feeding During the Metallocene‐Catalyzed Copolymerization of 10‐Undecene‐1‐olate with Propene through FTIR In‐Line Monitoring

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