Kinetics and Mechanism of Polymerization of <i>n</i>-Butyl Vinyl Ether Initiated by Dichloroalane (AlHCl<sub>2</sub>):  A New Cationic Initiating System

Kéki, Sándor; Nagy, Miklós; Deák, György; Zsuga, Miklós

doi:10.1021/jp004269g

Cited by 8 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CH protons (p) of VBE backbone and CH 2 protons (k) of VBE substituent resonate at δ = 3.09 ppm and 3.27 ppm, respectively. These data are also in good agreement with those obtained by Keki et al61…”

Section: Resultssupporting

confidence: 93%

See 1 more Smart Citation

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

Mun

Nurkeeva²,

Akhmetkalieva³

et al. 2005

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

Novel water-soluble amphiphilic copolymers have been synthesized by free radical copolymerization of 2-hydroxyethylacrylate with vinyl butyl ether. In water these copolymers exhibit lower critical solution temperature, which depends on the content of hydrophobic vinyl butyl ether units. The interaction between these copolymers and poly(acrylic acid) or poly(methacrylic acid) in aqueous solutions results in formation of interpolymer complexes stabilized by hydrogen bonds and hydrophobic interactions. An increase in hydrophobicity of the copolymers leads to the enhancement of their complex formation ability with respect to poly(acrylic acid) and poly(methacrylic acid). Poly-(methacrylic acid) forms stronger complexes with the copolymers when compared with poly(acrylic acid). The complexes exhibit dual sensitivity to pH-and temperature and this property may be easily adjusted regulating the strength of interaction. V V C 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 195-204, 2006

show abstract

Section: Resultssupporting

confidence: 93%

“…Figure 3 shows a 13 C NMR spectrum of PHEA and HEA–VBE with complete assignments of the chemical shifts. The spectral data are in a good agreement with the data of Keki et al,61 who reported the spectral features of poly(butyl vinyl ether).…”

Section: Resultssupporting

confidence: 90%

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

Mun

Nurkeeva²,

Akhmetkalieva³

et al. 2005

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

show abstract

“…The control experiments with MAO as an initiator did not yield any polymer in any instance, whereas EtAlCl 2 as an initiator yielded PVEs having molecular weights of 5000–6000 g mol −1 but were atactic in nature. This observation was similar to that of cationic polymerization using AlHCl 2 which yielded poly( n ‐butylvinyl ether) (PBVE) having molecular weights of 3000–12 000 g mol −1 and polydispersity index (PDI) of 1.5 28…”

Section: Resultssupporting

confidence: 77%

Isospecific polymerization of vinyl ethers with titanium catalysts containing modified tridentate anionic donor ligands

Padmanabhan

Vijayakrishna

2009

Polymer International

View full text Add to dashboard Cite

BACKGROUND: Stereo‐regulated polymerization of vinyl ethers (VEs) assumes significance because of its elegance and the resultant unique polymer properties. Although several Lewis acid catalysts polymerize VEs with good control of molecular weight, achieving stereo‐regularity is quite challenging. There are literature reports of a few catalyst systems capable of producing highly isotactic poly(vinyl ether) (PVE) only at lower temperatures with the polymer becoming atactic with an increase in reaction temperature. Hence innovating new catalyst systems which can produce highly stereo‐regular PVEs with high molecular weight at ambient temperature is quite challenging. RESULTS: We used two different titanium pre‐catalysts (1‐TiCl2 and 2‐TiCl2) for the polymerization of VEs. These pre‐catalysts in combination with methylaluminoxane (MAO)/borate polymerized VEs in higher conversions. Highly isotactic poly(n‐butylvinyl ether) (PBVE; 75% dyad isotactic ratio) was obtained with 1‐TiCl2/MAO at ambient temperature. CONCLUSION: We synthesized unimodal and highly isotactic PBVE with molecular weights of the order of 105 g mol−1 using the non‐metallocene‐type single‐site catalyst system 1‐TiCl2/MAO even at ambient temperature. The symmetry around the metal centre in the pre‐catalyst and the polymerization temperature played a major role in controlling the stereo‐regularization of the olefin inserted. Copyright © 2009 Society of Chemical Industry

show abstract

“…*: Also predicted to be layered by supervised SVM. † : Sn 2 Ge: Reported to phase-separate at high Sn concentrations;28 CuI 2 : reported to be unstable; 29 MgHF: there have been studies on the Mg−H−F system that may suggest solubility problems;30 AlHCl 2 : reported to be a molecular species 31.…”

mentioning

confidence: 99%

Revealing the Spectrum of Unknown Layered Materials with Superhuman Predictive Abilities

Cheon

Cubuk

Antoniuk

et al. 2018

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

We discover the chemical composition of over 1000 materials that are likely to exhibit layered and 2D phases but have yet to be synthesized. This includes two materials our calculations indicate can exist in distinct structures with different band gaps, expanding the short list of 2D phase-change materials. Whereas databases of over 1000 layered materials have been reported, we provide the first full database of materials that are likely layered but are yet to be synthesized, providing a roadmap for the synthesis community. We accomplish this by combining physics with machine learning on experimentally obtained data and verify a subset of candidates using density functional theory. We find that our model performs five times better than practitioners in the field at identifying layered materials and is comparable to or better than professional solid-state chemists. Finally, we find that semisupervised learning can offer benefits for materials design where labels for some of the materials are unknown.

show abstract

Kinetics and Mechanism of Polymerization of n-Butyl Vinyl Ether Initiated by Dichloroalane (AlHCl₂): A New Cationic Initiating System

Cited by 8 publications

References 19 publications

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

Isospecific polymerization of vinyl ethers with titanium catalysts containing modified tridentate anionic donor ligands

Revealing the Spectrum of Unknown Layered Materials with Superhuman Predictive Abilities

Contact Info

Product

Resources

About

Kinetics and Mechanism of Polymerization of n-Butyl Vinyl Ether Initiated by Dichloroalane (AlHCl2): A New Cationic Initiating System

Cited by 8 publications

References 19 publications

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

Novel temperature‐responsive water‐soluble copolymers based on 2‐hydroxyethylacrylate and vinyl butyl ether and their interactions with poly(carboxylic acids)

Isospecific polymerization of vinyl ethers with titanium catalysts containing modified tridentate anionic donor ligands

Revealing the Spectrum of Unknown Layered Materials with Superhuman Predictive Abilities

Contact Info

Product

Resources

About

Kinetics and Mechanism of Polymerization of n-Butyl Vinyl Ether Initiated by Dichloroalane (AlHCl₂): A New Cationic Initiating System