Structural and dielectric properties of poly(2-ethyl-2-oxazoline)/montmorillonite nanocomposite

Bouktab, S.; Saidat, Boubakeur; Belhocine, M.; Ammari, Abdelkader; Dergal, Fayçal

doi:10.1007/s10854-021-05963-x

Cited by 6 publications

(1 citation statement)

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“…It is known that poly(2-alkyl-2-oxazolines) containing more than two carbon atoms in the alkyl chain are crystalline [26][27][28]. Polymers with methyl and ethyl side groups are considered to be amorphous [29,30]. However, we found that the degree of crystallinity of poly(2-methyl-2-oxazoline) can reach 12%.…”

Section: Introductionmentioning

confidence: 67%

Determination of the Degree of Crystallinity of Poly(2-methyl-2-oxazoline)

et al. 2021

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A new method for purification of 2-methyl-2-oxazoline using citric acid was developed and living cationic ring-opening polymerization of 2-methyl-2-oxazoline was carried out. Polymerization was conducted in acetonitrile using benzyl chloride—boron trifluoride etherate initiating system. According to DSC data, the temperature range of melting of the crystalline phase of the resulting polymer was 95–180 °C. According to small-angle X-ray scattering and wide-angle X-ray diffraction data, the degree of crystallinity of the polymer was 12%. Upon cooling of the polymer melt, the polymer became amorphous. Using thermogravimetric analysis, it was found that the thermal destruction of poly(2-methyl-2-oxazoline) started above 209 °C.

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