Compatibilization of syndiotactic polystyrene and a thermotropic liquid‐crystalline polymer blend with a zinc salt of a sulfonated polystyrene ionomer

Son, Younggon; Weiß, Robert

doi:10.1002/app.11467

Cited by 11 publications

(4 citation statements)

References 77 publications

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“…Among these polymer blends, the blends of thermotropic liquid crystalline polymer (LCP) with other thermoplastic polymers have been a popular research topic. LCP with high strength and stiffness, high chemical resistance, good dimensional stability, and low linear thermal expansion coefficient are attractive engineering materials with high performance 1–4. LCP consist of repeating stiff mesogenic (liquid crystalline) monomer units that are incorporated either into the main‐chain or into the side chain of a polymer backbone, and now the literature on the blends of the main‐chain LCP and other thermoplastic polymers are quite extensive 5.…”

Section: Introductionmentioning

confidence: 99%

Thermal, morphological, and mechanical characteristics of polypropylene/polybutylene terephthalate blends with a liquid crystalline polymer or ionomer

Zhang

Sun

et al. 2006

J of Applied Polymer Sci

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Thermotropic side-chain liquid crystalline polymer (SLCP) and corresponding side-chain liquid crystalline ionomer (SLCI) containing sulfonate acid were used in the blends of polypropylene (PP) and polybutylene terephthalate (PBT) by melt-mixing respectively, and thermal behavior, morphological, and mechanical properties of two series of blends were investigated by differential scanning calorimetry, Fourier transforms infrared spectroscopy (FTIR), scanning electron microscopy, and tensile measurement. Compared with the immiscible phase behavior of PP/PBT/ SLCP blends, SLCI containing sulfonate acid groups act as a physical compatibilizer along the interface and compatibilize PP/PBT blends. FTIR analyses identify specific intermolecular interaction between sulfonate acid groups and PBT, and then result in stronger interfacial adhesion between these phases and much finer dispersion of minor PBT phase in PP matrix. The mechanical property of the blend containing 4.0 wt % SLCI was better than that of the other blends.

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Section: Introductionmentioning

confidence: 99%

Thermal, morphological, and mechanical characteristics of polypropylene/polybutylene terephthalate blends with a liquid crystalline polymer or ionomer

Zhang

Sun

et al. 2006

J of Applied Polymer Sci

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“…According to Turner-Jones [6][7][8][9][10][11][12] formula can be calculated from the relative content of β beta crystal: Type, α beta (300) for the WAXD curve of beta crystal (300) surface diffraction peak to the selected background curve peak height; alpha (110), alpha (040), alpha (130) respectively for a crystal (110), (040), (130) the diffraction peak high. Which can be seen in Table 1, with the increase of the LCP-A content, K beta showed increased first and then reduced.…”

Section: Blend Sample Analysis Of Crystal Structure Inucleating Agent...mentioning

confidence: 99%

Study on Crystallization Behavior of Liquid Crystalline Polyacrylates Induced Isotactic Polypropylene

Chen

2012

AMM

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A series of polypropylene (PP) blends were obtained by blending isotactic PP and different mass fraction of liquid crystalline polyacylates (LCP-A) at a proper process program. The effect of LCP-A as a new nucleator on crystallization behacior of isotactic PP has been investigated with wide angle X-ray diffraction (WAXD), polarized optical microscopy (POM) and differential scanning calorimetry (DSC). The experimental results showed that LCP-A in the PP played a role in the heterogeneous nucleation effect, supplied much crystal nucleus, enhanced the crystallization velocity and temperature, and the spherulites became smaller and more homogeneous. Moreover, β-phase in the PP was induced. In addition, the relative content of β-crystal (Kβ) increased with increasing LCP-A content or crystallization temperature, reached a maximum value, and then decreased as the temperature or LCP-A content further increased. Kβ of PP with 0.8% LCP-A isothermally crystallized at 125°C for 1h was 21%. POM results that showed the morphology of β and α spherulite disappeared at 156°C and 172°C, respectively.

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“…[96][97][98] This ionomer can compatibilize blends of a hydroxybenzoate/hydroxynaphthonate liquid crystalline copolyester with poly(styrene), nylon 66 (PA66), bisphenol A, and poly(carbonate).…”

Section: Physical Compatibilizermentioning

confidence: 99%