IR spectra and structure of polymers of indene and coumarone

Noskov, A. M.

doi:10.1007/bf00619238

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…The absorptions bands at 1610, 1595, 1565, 1490, and 1450 cm À1 correspond with the stretching modes of CH groups while the weaker absorptions at 1812, 1915, and 1955 cm À1 may be associated with the out-of-plane CH bond, which was confirmed by absorptions in the region of 700-1000 cm À1 . The C=C aliphatic bond is responsible for the weak absorption in the region between 1600 and 1670 cm À1 [5,[31][32][33]. PInd shows a characteristic and strong absorption band from 425 to 435 cm À1 , while that of PSt appears at 540 cm À1 (Figure 2(a)).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of hydrocarbon polymers by cationic polymerization and their thermal properties

Brum

Laux

Forte

2012

Designed Monomers and Polymers

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Cationic homo-and co-polymerization of indene (Ind), styrene (St), limonene (Lim), and 5-ethylidene-2-norbornene (ENB) was performed with AlCl 3 in dichloroethane at À20°C under inert N 2 . The aim of this work is to investigate the effect of the reaction conditions on the molecular weight of polyindene (PInd) obtained by cationic polymerization with AlCl 3 without an electron donor, and also to determine the effect of the use of cyclic diolefin comonomers on the polymer properties. The polymers were synthesized at a monomer/catalyst molar ratio (MR) of 100; St and Lim showed the highest and lowest reactivity, respectively. The polymers were characterized by 13 C and 1 H NMR spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, size exclusion chromatography, differential scanning calorimetry, and thermogravimetric analysis. PInd with a number average molecular weight (M n ) of 45 Â 10 3 g/mol and a glass transition temperature (T g ) of 207°C was obtained, whereas only oligomeric polylimonenes were obtained. Cyclic diolefins depressed both the M n and T g values of the Ind-copolymers. There was a dramatic decrease in the M n of the polymers: those obtained at a MR of 1:1 in the feed presented M n values lower than 10 4 g/mol, with the exception of poly(Ind-co-ENB), which is cross-linked. Poly(Ind-co-Lim) with lateral double bonds, a comonomer content of 1 to 20 mol%, and T g values in the range of 140-200°C were obtained.

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Section: Resultsmentioning

confidence: 99%

Synthesis of hydrocarbon polymers by cationic polymerization and their thermal properties

Brum

Laux

Forte

2012

Designed Monomers and Polymers

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On the radiation-induced polymerization of indene: from laboratory study to astrochemical implications

Barzaga,

García-Hernández,

Manchado

et al. 2024

J Radioanal Nucl Chem

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Bitumen Modified with Resins Obtained from Coal Coking Liquid Products: Nature, Adhesive and Rheological Properties

Pyshyev

Prysiazhnyi

Borbeyiyong

et al. 2023

Preprint

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Coumarone-indene (CIR) and coumarone-indene-carbazole resins (CICR) were obtained by ionic cooligomerization based on fractions extracted from liquid products of coal coking (gasoline fractions and coal tar). CIR and CICR are used as road bitumen modifiers to improve thermal resistance and adhesion. A cheap plasticizer has been selected to be used with CIR to produce polymer-modified bitumen (PMB). The change in the composition and properties of bitumen modified with CIR was described. A method for estimating the change in the adhesion properties of bitumen at low temperatures has been developed, which simulates the behavior of bitumen during the operation of pavements in winter and during sharp changes in weather conditions. The possibility of using the obtained CICR as adhesive enhancers for bitumen has been established. It is shown that the addition of these resins significantly increases the adhesion of bitumen to the surface of granite gravel and glass.

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IR spectra and structure of polymers of indene and coumarone

Cited by 5 publications

References 4 publications

Synthesis of hydrocarbon polymers by cationic polymerization and their thermal properties

Synthesis of hydrocarbon polymers by cationic polymerization and their thermal properties

On the radiation-induced polymerization of indene: from laboratory study to astrochemical implications

Bitumen Modified with Resins Obtained from Coal Coking Liquid Products: Nature, Adhesive and Rheological Properties

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