Understanding nucleophiles effects in fast living cationic polymerisation of isobutyl vinyl ether in a microflow system from stability and activity of propagating chains

Polymer Chemistry ◽

10.1039/d1py00222h ◽

2021 ◽

Author(s):

Dan Xie ◽

Yangcheng Lu

Keyword(s):

Vinyl Ether ◽

Initiation System ◽

Cationic Polymerisation

Previous studies into fast living cationic polymerisation have rarely focused on the effects of nucleophiles, which are crucial in determining a suitable initiation system. In this work, taking the polymerisation...

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Statistical Copolymers of n-Butyl Vinyl Ether and 2-Chloroethyl Vinyl Ether via Metallocene-Mediated Cationic Polymerization. A Scaffold for the Synthesis of Graft Copolymers

Polymers ◽

10.3390/polym11091510 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1510 ◽

Cited By ~ 2

Author(s):

Zouganelis ◽

Choinopoulos ◽

Goulas ◽

Pitsikalis

Keyword(s):

Vinyl Ether ◽

Graft Copolymers ◽

Structural Parameters ◽

Theoretical Models ◽

Size Exclusion ◽

Sequence Length ◽

Reactivity Ratios ◽

Scanning Calorimetry ◽

Initiation System ◽

Grafting From

The cationic statistical copolymerization of n-butyl (be) and 2-chloroethyl vinyl ether (CEVE), is efficiently conducted using bis(η5-cyclopentadienyl)dimethyl zirconium (Cp2ZrMe2) in combination with tetrakis(pentafluorophenyl)borate dimethylanilinum salt [B(C6F5)4]–[Me2NHPh]+, as an initiation system. The reactivity ratios are calculated using both linear graphical and non-linear methods. Structural parameters of the copolymers are obtained by calculating the dyad sequence fractions and the mean sequence length, which are derived using the monomer reactivity ratios. The glass transition temperatures (Tg) of the copolymers are measured by Differential Scanning Calorimetry (DSC), and the results are compared with predictions based on several theoretical models. The statistical copolymers are further employed as scaffolds for the synthesis of graft copolymers having poly(vinyl ether)s as a backbone and either poly(ε-caprolactone) (PCL) or poly(l-lactide) (PLLA) as side chains. Both the grafting “onto” and the grafting “from” methodologies are employed. The reaction sequence is monitored by Size Exclusion Chromatography (SEC), NMR and IR spectroscopies. The advantages and limitations of each approach are thoroughly examined.

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Synthesis of Telechelic Oligo(isobutyl vinyl ether)s via Alkylation of Silyl Enol Ethers by the Propagating Chain End in an Ab Initio Cationic Polymerisation

Macromolecular Rapid Communications ◽

10.1002/1521-3927(200102)22:3<194::aid-marc194>3.0.co;2-c ◽

2001 ◽

Vol 22 (3) ◽

pp. 194-198 ◽

Cited By ~ 3

Author(s):

Weihong Lang ◽

Stephen Rimmer

Keyword(s):

Ab Initio ◽

Vinyl Ether ◽

Enol Ethers ◽

Silyl Enol Ethers ◽

Cationic Polymerisation

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Thermal gravimetric analysis of in-situ crosslinked nanocellulose whiskers • poly(methyl vinyl ether-co-maleic acid) • polyethylene glycol

TAPPI Journal ◽

10.32964/tj10.4.29 ◽

2011 ◽

Vol 10 (4) ◽

pp. 29-33

Author(s):

LEE A. GOETZ ◽

AJI P. MATHEW ◽

KRISTIINA OKSMAN ◽

ARTHUR J. RAGAUSKAS

Keyword(s):

Thermal Stability ◽

Polyethylene Glycol ◽

Vinyl Ether ◽

Thermal Gravimetric Analysis ◽

Maleic Acid ◽

Gravimetric Analysis ◽

Thermal Gravimetric ◽

Methyl Vinyl ◽

Methyl Vinyl Ether

The thermal stability and decomposition of in-situ crosslinked nanocellulose whiskers – poly(methyl vinyl ether-co-maleic acid) – polyethylene glycol formulations (PMVEMA-PEG), (25%, 50%, and 75% whiskers) – were investigated using thermal gravimetric analysis (TGA) methods. The thermal degradation behavior of the films varied according to the percent cellulose whiskers in each formulation. The presence of cellulose whiskers increased the thermal stability of the PMVEMA-PEG matrix.

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