Compatibilizing effect of functionalized polystyrene blends: a study of morphology, thermal, and mechanical properties

Shabbir, Saima; Zulfiqar, Sonia; Lieberwirth, Ingo; Kausar, Ayesha; Sarwar, Muhammad Ilyas

doi:10.1002/sia.2788

Cited by 26 publications

(11 citation statements)

References 33 publications

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“…have close relationships with their internal microphase morphology. [5][6][7][8][9] The present work aims to characterize PANI blends which are prepared using the insulating polymer blend, PS/PMMA. The effects of adding PANI in the presence of pluronic (PL) as compatibilizers on the mechanical, dielectric properties, and the thermal stability of PS/PMMA blends were investigated.…”

Section: Introductionmentioning

confidence: 99%

Studies the behaviors of polyaniline on the properties of PS/PMMA blends

Saleh

Khalaf

Ward

2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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The effect of dispersion of polyaniline on the mechanical, morphology, electrical, and thermal properties of the PS/PMMA blends prepared by solution casting fabrication process was investigated. PS/PMMA (50/50) wt% blend with 3% pluronic and 1% polyaniline gave the best tensile strength in comparison with other blends. So, different concentrations from polyaniline (1, 3, 5, 10, 15, and 20 wt%) were evaluated to obtain the suitable effective concentrations that can be used. The morphology suggests that 3% pluronic and 1% polyaniline can act as mechanical compatibilizer between PS and PMMA as well as a thermodynamic compatibilizer. The thermal stability of the PS/PMMA (50/50 wt%) blend with different concentrations of polyaniline in the presence of 3% pluronic was studied using thermogravimetric analysis, which showed an increase in thermal stability due to the presence of polyaniline. The dielectric investigations reflected an increase in both the permittivity and dielectric loss with increasing the content of polyaniline (PANI), due to interfacial polarization and conductivity effects. In addition the increase in the conductivity of the composites is related to the increase of the conductive paths among the filler. The pathway of conductive filler was easy to form lower percolation threshold of the composite due to better dispersion of PANI. However, composites with low percolation threshold will be favorites for the practical applications with regard to the less deteriorated mechanical properties and processability.

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Section: Introductionmentioning

confidence: 99%

Studies the behaviors of polyaniline on the properties of PS/PMMA blends

Saleh

Khalaf

Ward

2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…[51] PS grafts were also synthesized by styrene radical polymerization onto irradiated PC from created radical sites. [52][53][54][55][56][57][58][59][60][61][62] SEBS-g-MAH is a preformed immiscible terpolymer, with PC, widely used in the field of compatibilization of styrenic polymers, polyolefins, and polyamides. But this terpolymer was never used to compatibilize PC/ PS blends.…”

Section: Introductionmentioning

confidence: 99%

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

Chevallier

Becquart

Majesté

et al. 2013

Designed Monomers and Polymers

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The reactions between polycarbonate (PC) and polystyrene-block-poly(ethylene-butylene)-block-polystyrene-graftedmaleic anhydride (SEBS-g-MAH) is a novel, convenient, solvent-free, and easy way to create SEBS-g-PC in order to compatibilize polystyrene and PC blends. This study determines the most efficient catalyst among Tin (II) bis(2-ethylhexanoate) (SnOct 2 ), 1,5,7-Triazabicyclo[4.4.0]dec-5-ene (TBD), Titanium tetrabutoxide (Ti(OBu) 4 ) and Sodium 4-hydroxybenzenesulfonate dihydrate (SHBS) in the molten state at 220°C. From 20 to 30 wt% of SEBS-g-MAH (or KFG) chains became insoluble. The size exclusion chromatography analyses showed the formation of a double distribution due to PC chains scission and grafting reactions onto SEBS-g-MAH with the exception of the Ti(BuO) 4 use. Fine microstructures with a percolation effect proved the efficiency of both the TBD and the SnOct 2 . The PC transition temperature decreased in at least 10°C, confirmed that only SnOct 2 and TBD were efficient to catalyze the grafting reactions. No evolution was observed with the SHBS and Ti(OBu) 4.

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“…synthesis and studies of anticancer activities of pyridine, pyrane, and pyrimidine derivatives (6); synthesis and pharmacological screening for muscle relaxant, anticonvulsant, and sedative activities (7); synthesis of novel heterocyclic compounds as potential anticancer agents using chromanone and thiochromanone as synthons (8); studies on ketene S, S-acetals for synthesis of new pyrazolo[1,5-a]pyrimidines and pyrazolo[1,5-a]triazines (9); in reaction of active methylene compounds with 3,4,5-trimethoxybenzalanilines and studies of antifungal activity (10). Introduction of functional groups into polystyrene continues to attract a lot of interest for many applications including solid-supported reagents (11); compatibilization of functionalized polystyrene blends (12). Thus, positively charged, alumina-coated silica/polystyrene hybrid nanoparticles were prepared via radical copolymerization of styrene and acrylamide (13).…”

Section: Introductionmentioning

confidence: 99%

Novel Copolymers of Styrene. 8. Ring-Trisubstituted 2-Cyano-3-phenyl-2-propenamides

Kharas

Hill

García

et al. 2015

Journal of Macromolecular Science, Part A

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Novel trisubstituted ethylenes, ring-trisubstituted 2-cyano-3-phenyl-2-propenamides, RC 6 H 2 CHHC(CN)CONH 2 (where R is 2,4, 6-trimethyl, 2,3-dimethyl-4-methoxy, 2,3,4-trimethoxy, 2,4,5-trimethoxy, 2,4,6-trimethoxy, and 3,4,5-trimethoxy) were synthesized by potassium hydroxide catalyzed Knoevenagel condensation of ring-trisubstituted benzaldehydes and cyanoacetamide and characterized by CHN elemental analysis, IR, 1 H-and 13 C-NMR. Novel copolymers of the ethylenes and styrene were prepared at equimolar monomer feed composition by solution in the presence of a radical initiation (AIBN) at 70 C. The composition of the copolymers was calculated from nitrogen analysis, and the structures were analyzed by IR, 1 H-and 13 C-NMR, GPC, DSC, and TGA. Thus, the order of relative reactivity (1/r1) and the tendency toward alternation of monomer units in the copolymer for the monomers is 2,4,6-(CH 3 ) 3 (0.71) > 2,3-(CH 3 ) 2 -4-CH 3 O (0.52) > 2,3,4-(CH 3 O) 3 (0.34) > 2,4,5-(CH 3 O) 3 (0.30) > 3,4,5-(CH 3 O) 3 (0.15) > 2,4,6-(CH 3 O) 3 (0.12). High T g of the copolymers in comparison with that of polystyrene indicates a substantial decrease in chain mobility of the copolymer due to the high dipolar character of the trisubstituted ethylene monomer unit. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 200-500 C range with residue (2.9-9.9 wt%), which then decomposed in the 500-800 C range.

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Compatibilizing effect of functionalized polystyrene blends: a study of morphology, thermal, and mechanical properties

Cited by 26 publications

References 33 publications

Studies the behaviors of polyaniline on the properties of PS/PMMA blends

Studies the behaviors of polyaniline on the properties of PS/PMMA blends

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

Novel Copolymers of Styrene. 8. Ring-Trisubstituted 2-Cyano-3-phenyl-2-propenamides

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