A new depolarized mode in a binary polymer blend in the critical region

Blending polymers is an effective method to develop novel materials, tailoring the properties of the components. However, different morphology structures can be formed during the preparation, which could result in a wide diversity of mechanical and physical properties. The properties of polymer blends are most significantly influenced by the emerging range of phase inversion, which depends on the composition ratio and the viscosity ratio. In this paper various blends were prepared, utilizing polyethylene terephthalate (PET), polystyrene (PS) and two high density polyethylenes (HDPE), which differ in flowability. After preliminary homogenization by twin screw extruder, standard injection moulded specimen were prepared in order to present the effects of phase inversion on tensile properties, shrinkage and burning characteristics in binary polymer blends.

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Reduced graphene oxide (RGO)-induced compatibilization and reinforcement of poly(vinylidene fluoride) (PVDF)-thermoplastic polyurethane (TPU) binary polymer blend

Journal of Applied Polymer Science ◽

10.1002/app.47010 ◽

2018 ◽

Vol 136 (5) ◽

pp. 47010 ◽

Cited By ~ 7

Author(s):

M. Bera ◽

U. Saha ◽

A. Bhardwaj ◽

P. K. Maji

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Polymer Blend ◽

Vinylidene Fluoride ◽

Thermoplastic Polyurethane ◽

Binary Polymer ◽

Reduced Graphene ◽

Poly Vinylidene Fluoride

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Soft-shear induced phase-separated nanoparticle string-structures in polymer thin films

Faraday Discussions ◽

10.1039/c5fd00141b ◽

2016 ◽

Vol 186 ◽

pp. 31-43 ◽

Cited By ~ 4

Author(s):

Ren Zhang ◽

Bongjoon Lee ◽

Michael R. Bockstaller ◽

Abdullah M. Al-Enizi ◽

Ahmed Elzatahry ◽

...

Keyword(s):

Thin Film ◽

Phase Separation ◽

Polymer Blends ◽

Polymer Blend ◽

Polymer Chains ◽

Translation Speed ◽

Binary Polymer ◽

The Matrix ◽

P Application ◽

Nanoparticle Structure

Application of shear stress has been shown to unidirectionally orient the microstructures of block copolymers and polymer blends. In the present work, we study the phase separation of a novel nanoparticle (NP)–polymer blend thin film system under shear using a soft-shear dynamic zone annealing (DZA-SS) method. The nanoparticles are densely grafted with polymer chains of chemically dissimilar composition from the matrix polymer, which induces phase separation upon thermal annealing into concentrated nanoparticle domains. We systematically examine the influence of DZA-SS translation speed and thus the effective shear rate on nanoparticle domain elongation and compare this with the counterpart binary polymer blend behavior. Unidirectionally aligned nanoparticle string-domains are fabricated in the presence of soft-shear in confined thin film geometry. We expect this DZA-SS method to be applicable to various NP–polymer blends towards unidirectionally aligned nanoparticle structures, which are important to functional nanoparticle structure fabrication.

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