Determination of monomer reactivity ratios in styrene/2‐ethylhexylacrylate copolymer

Kavousian, A; Ziaee, Farshid; Nekoomanesh, Mehdi; Leamen, M. J.; Penlidis, Alexander

doi:10.1002/app.20338

Cited by 7 publications

(6 citation statements)

References 13 publications

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“…They reported the reactivity ratios for styrene and EHA as 0.10 and 0.175 respectively. Moreover, Kavousian et al reported the copolymerization of styrene and EHA via conventional radical polymerization (Kavousian et al, 2004 ). They reported the reactivity ratio of styrene and EHA as 0.926 and 0.238 respectively.…”

Section: Resultsmentioning

confidence: 99%

“…So the copolymers of EHA are widely used in paints, coating and adhesive applications (Skeist, 1977 ; Plessis et al, 2001 ; Webster and Crain, 2002 ). Copolymerization is an important synthetic tool which can control the thermal and mechanical properties of the polymers (Kavousian et al, 2004 ). In the copolymers of styrene and EHA, the properties of the copolymers can be monitored by controlled incorporation of the respective comonomers styrene and EHA.…”

Section: Introductionmentioning

confidence: 99%

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Copper mediated controlled radical copolymerization of styrene and 2-ethylhexyl acrylate and determination of their reactivity ratios

Koiry

Singha

2014

Front. Chem.

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Copolymerization is an important synthetic tool to prepare polymers with desirable combination of properties which are difficult to achieve from the different homopolymers concerned. This investigation reports the copolymerization of 2-ethylhexyl acrylate (EHA) and styrene using copper bromide (CuBr) as catalyst in combination with N,N,N′,N″,N″- pentamethyldiethylenetriamine (PMDETA) as ligand and 1-phenylethyl bromide (PEBr) as initiator. Linear kinetic plot and linear increase in molecular weights vs. conversion indicate that copolymerization reactions were controlled. The copolymer composition was calculated using 1H NMR studies. The reactivity ratio of styrene and EHA (r1 and r2) were determined using the Finemann–Ross (FR), inverted Finemann–Ross (IFR), and Kelen–Tudos (KT) methods. Thermal properties of the copolymers were also studied by using TGA and DSC analysis.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Copper mediated controlled radical copolymerization of styrene and 2-ethylhexyl acrylate and determination of their reactivity ratios

Koiry

Singha

2014

Front. Chem.

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“…Because of the commercial importance of HIPS, a lot of studies deal with synthesis, process modeling, and characterization of this polymer. 7 In 1986, Hobbs reported effects of rubber particle size on impact strength property of high impact polystyrene. 8 In 1990, Peng and coworkers studied the effects of grafting and cross-linking of polybutadiene during the bulk polymerization of high impact polystyrene.…”

Section: Introductionmentioning

confidence: 99%

Poly1‐hexene: New impact modifier in HIPS technology

Hanifpour

Bahri‐Laleh

Nekoomanesh‐Haghighi

et al. 2016

J of Applied Polymer Sci

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Poly1-hexene was prepared using a conventional heterogeneous Ziegler-Natta catalyst and its stereoregularity was characterized using 13 C-NMR analysis. New kind of high impact polystyrene (HIPS) was prepared by radical polymerization of styrene in the presence of different amounts of synthesized poly1-hexene (PH) as impact modifier (HIPS/PH) and compared with conventional high impact polystyrene with polybutadiene (HIPS/PB) as rubber phase. Scanning electron microscopy (SEM) revealed that the dispersion of poly1-hexene in polystyrene matrix was more uniform compared with it in HIPS/PB. The impact strength of HIPS/PH was 29-79% and 80-289% higher than that in HIPS/PB and neat polystyrene, respectively. FTIR was used to confirm more durability of HIPS/PH samples toward ozonation. To study the effect of rubber type and amount on the T g s of polystyrene, differential scanning calorimetry was employed. Results obtained from TGA demonstrated higher thermal stability of HIPS/PH sample in comparison with conventional HIPS/PB one. Our obtained results suggest new high impact polystyrene that in all studied aspects has better performance than the conventional HIPS.

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“…In spite of wide use of EHA, data on its relative activities in copolymerization with other monomers are limited in the literature; only data on the characteristics of conjugation effects and polar effects in the monomer are available [8,9]. Data on the thermodynamic properties of initial EHA and copolymers based on it are almost absent.…”

Section: Introductionmentioning

confidence: 97%

The thermodynamic properties of 2-ethylhexyl acrylate over the temperature range from T → 0 to 350 K

Kulagina

Samosudova

Letyanina

et al. 2012

Russ. J. Phys. Chem.

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The temperature dependence of the heat capacity = f(T) 2 of 2 ethylhexyl acrylate was studied in an adiabatic vacuum calorimeter over the temperature range 6-350 K. Measurement errors were mainly of 0.2%. Glass formation and vitreous state parameters were determined. An isothermic shell calorimeter with a static bomb was used to measure the energy of combustion of 2 ethylhexyl acrylate. The experimental data were used to calculate the standard thermodynamic functions (T), H°(T)-H°(0), S°(T)-S°(0), and G°(T)-H°(0) of the compound in the vitreous and liquid states over the temperature range from T → 0 to 350 K, the standard enthalpies of combustion Δ c H°, and the thermodynamic characteristics of formation Δ f H°, Δ f S°, and Δ f G° at 298.15 K and p = 0.1 MPa.

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Determination of monomer reactivity ratios in styrene/2‐ethylhexylacrylate copolymer

Cited by 7 publications

References 13 publications

Copper mediated controlled radical copolymerization of styrene and 2-ethylhexyl acrylate and determination of their reactivity ratios

Copper mediated controlled radical copolymerization of styrene and 2-ethylhexyl acrylate and determination of their reactivity ratios

Poly1‐hexene: New impact modifier in HIPS technology

The thermodynamic properties of 2-ethylhexyl acrylate over the temperature range from T → 0 to 350 K

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