Influence of Octasilane POSS on Non-Isothermal Crystallization, Thermal Stability and Conductivity of Poly(vinyl alcohol) Nanocomposite

Roushan, Alireza Hassanjani; Omrani, Abdollah; Motahari, Ahmad; Rostami, Abbas Ali

doi:10.1080/03602559.2015.1070870

Cited by 8 publications

(1 citation statement)

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“…One class of additives that holds promise as an effective rheology modifier is polyhedral oligomeric silsesquioxane (POSS). POSS nanostructured chemicals consist of a Si‐O‐Si inorganic cage surrounded by an organic corona, which can be modified widely to enhance the compatibility with target polymer matrices and promote molecular level dispersion . Several studies in our own and other research laboratories have reported a reduction in the melt viscosity of engineering thermoplastics with the addition of low concentrations of POSS, while preserving the thermal and mechanical properties of the neat polymer .…”

Section: Introductionmentioning

confidence: 99%

Rheological and crystallization enhancement in polyphenylenesulfide and polyetheretherketone POSS nanocomposites

Knauer

Brust

Carr

et al. 2016

J of Applied Polymer Sci

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Polyhedral oligomeric silsesquioxane (POSS) additives have been shown to increase melt-flow and crystallization in thermoplastics. In this study, the effect of incorporation of trisilanolphenyl-POSS molecules in polyphenylenesulfide (PPS) and polyetheretherketone (PEEK) on rheology, crystallization kinetics, and thermal and mechanical properties was evaluated. Parallel plate rheometry revealed a reduction in the viscosity of PPS and PEEK with the addition of POSS. The magnitude and concentration dependence of rheological modification were shown to depend on the polymer structure and POSS solubility. Isothermal crystallization kinetics were analyzed using the Avrami model and it was found that the addition of POSS accelerated the crystallization rate of PPS blends with no significant effect on PEEK blends. Interestingly, no statistical difference in degradation temperature, tensile modulus, or tensile strength of PPS or PEEK blends was observed. The findings indicate the potential for improvements in melt viscosity and crystallization of high temperature thermoplastics with tailored POSS/polymer interactions. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44462.

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Section: Introductionmentioning

confidence: 99%