Synergistic effects of silica nanoparticles and reactive compatibilizer on the compatibilization of polystyrene/polyamide 6 blends

Zhang, Xianming; Sun, Menghan

doi:10.1002/pen.24511

Cited by 15 publications

(7 citation statements)

References 40 publications

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“…Another way to compatibilize polymer blends is to selectively disperse (nano)particles to stabilize the blend. In the case of the PS/PA6 blend, different types of nanoparticles (NPs) were incorporated: montmorillonite [22], silica [23][24][25][26], TiO 2 [27], carbon nanotubes (CNT) [28]. However, it is well known that selectively dispersing micro or…”

Section: Introductionmentioning

confidence: 99%

Kinetic and thermodynamic parameters guiding the localization of regioselectively modified kaolin platelets into a PS/PA6 co-continuous blend

Taguet¹,

Otazaghine²,

Batistella³

2020

Polymer

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This article highlights the role of kinetic and thermodynamic parameters on the localization of modified kaolin platelets into a high interfacial tension co-continuous PS/PA6 blend after extrusion, injection molding and annealing. Three kinds of copolymers were synthesized and grafted on kaolin: poly(styrene-co-(methacryloyloxy)methyl phosphonic acid) copolymer (P(S-co-MAPC 1 (OH) 2)), polystyrene terminated 3-(mercaptopropyl)triethoxysilane, (ETS-PS) and poly (styrene-co-3-methacryloxypropyltrimethoxysilane) copolymer, (P(S-co-MPS)). Those copolymers were distinguished by (1) the nature of their functional groups (phosphonic acid that reacts only with aluminol groups or alkoxysilane that reacts with both silanol and aluminol groups), (2) the amount of functional groups and (3) their molecular weights. After functionalization the kaolin samples (K1, K2 and K3, respectively) were analyzed by FTIR, TGA and Py-GC/MS to evaluate the grafting. It was shown that P(S-co-MAPC 1 (OH) 2) and P(S-co-MPS) copolymers grafted on kaolin led to highly anisotropic K1 and K3 kaolin platelets, respectively. Then, 50/50/5 PS/PA6/K i samples (i ¼ 0 to 3) were processed as follows: (1) kaolin platelets were dispersed (via solvent cast) into the PS phase. Then, (2) PS þ kaolin were melt mixed by microcompounder with PA6, then (3) the PS/PA6/K i were injection molded into disks and finally (4) they were annealed (via dynamic or quiescent annealing). Thanks to the high shear rate and longtime of mixing during extrusion (microcompounder), all the kaolin platelets (unmodified K, K1, K2 and K3) crossed the interface and were localized in the PA6 phase. All K i kaolin stayed in the PA6 phase during injection. However, after annealing (quiescent or dynamic), the localization of the nanoplatelets was guided by thermodynamic parameters, and SEM analysis revealed the segregation of K1 and K3 kaolin platelets at the polymers interface, with a high tendency to impede polymer phases coalescence. Hence, modified K1 and K3 kaolin are promising compatibilizing agents for a cocontinuous PS/PA6 blend.

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Section: Introductionmentioning

confidence: 99%

Kinetic and thermodynamic parameters guiding the localization of regioselectively modified kaolin platelets into a PS/PA6 co-continuous blend

Taguet¹,

Otazaghine²,

Batistella³

2020

Polymer

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“…In particular, methods for the polyvinyl chloride modification by polystyrene plastics and the unsaturated polyester resins modification by polyvinyl chloride have been developed . There are also known materials based on blends of polyamide 6 with polystyrene , obtained by mixing in a viscous‐flow and obtained with the use of compatibilizers and inorganic fillers , or blends of polyamide 6 with ABS . These materials have low technological shrinkage and water absorption and good performance properties.…”

Section: Introductionmentioning

confidence: 99%

Modified Densified Waste of Expanded Polystyrene and Its Blends With Polyamide 6

Levytskyi

Moravskyi

Masyuk

et al. 2020

Polymer Engineering & Sci

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The regularities of expanded polystyrene (EPS) waste modified by polyvinylpyrrolidone (PVP) with the simultaneous gas release in various solvents were revealed. The upper sorption limit depends on the nature of the solvent, the concentration and molecular mass of the PVP, the temperature of the process, and the apparent density of the EPS. It was established that the sorption limit of PVP increases with increasing of its concentration in the system and decreases with molecular mass increasing. Based on XRD and FTIR analyses, it was determined that materials based on polyamide 6 and EPS modified by PVP have an increased crystallinity degree by 10-15%, a smaller average crystallite size and higher technological compatibility. The addition of PVP-modified EPS contributes to the increase of the yield strength of polyamide 6 by about 5%-10%. The increase of the Vicat softening point by 5-8 K and the surface hardness by 25-30 MPa of materials based on polyamide 6 and modified polystyrene was investigated. It is caused by the redistribution of intermolecular bonds between the components of the blend under by the effect of a uniformly distributed PVP in the EPS resulting in increased compatibility between the components and the compacted structure. POLYM. ENG. SCI., 60:935-943, 2020. * modified EPS; ** degassed EPS. FIG. 7 XRD patterns of mixtures on the basis of PA-6 and EPS: (a) pure PA-6; (b) mixture of PA-6 and modified EPS; (c) mixture of PA-6 and degassed EPS. EPS content 5 wt%. 1-approximation curve of diffraction; 2, 3, 4, 5optimized curves of intensity of reflexes of the planes (200)α-, (002)α-, γ-, and amorphous phase.

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“…Moreover, some studies have focused on effects of nanofillers on microstructure formation of immiscible blends, in recent years. It has been shown that different type nanofillers can act a compatibilizer in immiscible polymer blends due to physical interactions; mainly as the selective localization into a phase and/or interface and thus hindering the coalescence of dispersed droplets [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effects of liquid crystal polymer and organoclay addition on the physical properties of high‐density polyethylene films

Durmuş

Ercan

Alanalp

et al. 2019

Polymer Engineering & Sci

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In this study, physical properties of high‐density polyethylene (HDPE) films, blended and reinforced with small amounts of liquid crystal polymer (LCP) and organoclay (org‐clay), were investigated by employing different characterization tools such as X‐ray diffractometer, scanning electron microscope, differential scanning calorimetry, rotational rheometer, dynamic mechanical analysis, and gas permeability measurements. Viscoelastic properties of samples were quantified by applying several test procedures in melt and solid‐state dynamic measurements. It was found that rigid LCP droplets were dispersed well into HDPE matrix and improved the melt elasticity and creep resistance of HDPE. Compatibilizer and org‐clay loading into HDPE/LCP blends yielded formation of smaller LCP droplets and reduced mean relaxation time and shear modulus values, compared to unloaded counterparts. It was observed that org‐clay stacks were dispersed into HDPE phase due to using of maleic anhydride grafted polyethylene as compatibilizer and HDPE/LCP/org‐clay ternary nanocomposites exhibited intercalated microstructure. Solid‐state uniaxial tensile creep behaviors of films were modeled with the Findley power‐law and four‐element Burger models. HDPE/LCP/org‐clay (90/10/5) ternary nanocomposite film exhibited better gas barrier performance than HDPE by decreasing its permeability by 50%. POLYM. ENG. SCI., 59:1344–1353 2019. © 2019 Society of Plastics Engineers

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Synergistic effects of silica nanoparticles and reactive compatibilizer on the compatibilization of polystyrene/polyamide 6 blends

Cited by 15 publications

References 40 publications

Kinetic and thermodynamic parameters guiding the localization of regioselectively modified kaolin platelets into a PS/PA6 co-continuous blend

Kinetic and thermodynamic parameters guiding the localization of regioselectively modified kaolin platelets into a PS/PA6 co-continuous blend

Modified Densified Waste of Expanded Polystyrene and Its Blends With Polyamide 6

Effects of liquid crystal polymer and organoclay addition on the physical properties of high‐density polyethylene films

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