Polymer blend-filled nanoparticle films via monomer-driven infiltration of polymer and photopolymerization

2018 ◽  
Vol 3 (1) ◽  
pp. 96-102 ◽  
Author(s):  
Yiwei Qiang ◽  
Neha Manohar ◽  
Kathleen J. Stebe ◽  
Daeyeon Lee
Keyword(s):  
Polymer Blends ◽  
Polymer Blend ◽  
Nanocomposite Films ◽  
Nanoparticle Films

A facile process to fabricate multiphasic nanocomposite films consisting of polymer blends and high loadings of nanoparticles is developed.

scholarly journals Influence of the Phase Inversion on Mould-Shrinkage, Mechanical- and Burning Properties of Polymer Blend

2017 ◽  
Vol 885 ◽  
pp. 36-41 ◽  
Author(s):  
Károly Dobrovszky ◽  
Ferenc Ronkay
Keyword(s):  
Physical Properties ◽  
Polymer Blends ◽  
Tensile Properties ◽  
Polymer Blend ◽  
Phase Inversion ◽  
Viscosity Ratio ◽  
Screw Extruder ◽  
Binary Polymer ◽  
Mechanical And Physical Properties ◽  
Twin Screw

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.

Design of TiO2/Au nanoparticle films with controlled crack formation and different architectures using a centrifugal strategy

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7007-7017 ◽  
Author(s):  
Abdelhafed Taleb ◽  
Frederic Mesguich ◽  
Thomas Onfroy ◽  
Xue Yanpeng
Keyword(s):  
Crack Formation ◽  
Crack Density ◽  
Nanocomposite Films ◽  
Au Nanoparticle ◽  
Hybrid Nanocomposite ◽  
Nanoparticle Films

Centrifugal strategy is demonstrated to enable the design of hybrid nanocomposite films with controllable architecture, porosity, crack density and thickness.

Bio-nanocomposite films based on cellulose nanocrystals filled polyvinyl alcohol/chitosan polymer blend

2015 ◽  
Vol 132 (22) ◽  
pp. n/a-n/a ◽  
Author(s):  
Nassima El Miri ◽  
Karima Abdelouahdi ◽  
Mohamed Zahouily ◽  
Aziz Fihri ◽  
Abdellatif Barakat ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Cellulose Nanocrystals ◽  
Nanocomposite Films

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

2016 ◽  
Vol 186 ◽  
pp. 31-43 ◽  
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.

Morphology Development of Polymer Blend With Different Viscosity Ratios Along an Extruder

2006 ◽  
Author(s):  
Han-Xiong Huang ◽  
Xiao-Jing Li ◽  
You-Fa Huang
Keyword(s):  
Polymer Blends ◽  
Polymer Blend ◽  
Polyamide 6 ◽  
High Viscosity ◽  
Morphology Evolution ◽  
Screw Extruder ◽  
Sampling Device ◽  
Low Viscosity ◽  
Single Screw Extruder ◽  
Morphology Development

The properties of polymer blends are largely determined by their morphology. So it is significant to investigate the morphology development of polymer blends during processing. In this work the morphology development of polymer blend was studied during flow along a single screw extruder. The polymer blend used incorporated polypropylene (PP) as its matrix phase and a high-viscosity or low-viscosity polyamide-6 (PA6) as the disperse phase. The samples of blends were taken from different positions using specially designed sampling device along the extruder online during the processing and were then examined using scanning electron microscopy (SEM). The morphology of the dispersed phase was quantitatively analyzed using image analysis software. The morphology evolution of blends along the melt conveying zone of screw was simulated. Theoretically predicted morphology evolution is in reasonable agreement with the experimental results. The aim of this work is to provide a better insight in the morphology development of blend during processing.

scholarly journals Study the effect of CaCO3 nanoparticles on physical properties of biopolymer blend

2019 ◽  
Vol 16 (39) ◽  
pp. 11-22
Author(s):  
K. J. Mohammed
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Young’S Modulus ◽  
Polymer Blend ◽  
Young's Modulus ◽  
Antibacterial Properties ◽  
Young Modulus ◽  
Nanocomposite Films ◽  
Caco3 Nanoparticles ◽  
Mechanical Durability

Chitosan (CH) / Poly (1-vinylpyrrolidone-co-vinyl acetate) (PVP-co-VAc) blend (1:1) and nanocomposites reinforced with CaCO3 nanoparticles were prepared by solution casting method. FTIR analysis, tensile strength, Elongation, Young modulus, Thermal conductivity, water absorption and Antibacterial properties were studied for blend and nanocomposites. The tensile results show that the tensile strength and Young’s modulus of the nanocomposites were enhanced compared with polymer blend [CH/(PVP-co-VAc)] film. The mechanical properties of the polymer blend were improved by the addition of CaCO3 with significant increases in Young’s modulus (from 1787 MPa to ~7238 MPa) and tensile strength (from 47.87 MPa to 79.75 MPa). Strong interfacial bonding between the CaCO3 nanoparticles and the [CH/(PVP-co-VAc)), homogenous distribution of the nanoparticles in the polymer blend, are assistance of noticeably raised mechanical durability. The thermal conductivity of the polymer blend and CaCO3 nanocomposite films show that it decreased in the adding of nanoparticle CaCO3. The solvability measurements display that the nanocomposite has promoted water resistance. The weight gain lowered with the increase of nano CaCO3. Blending chitosan CH with (PVP-co-VAc) enhanced strength and young modules of the nanocomposites and increased the absorption of water because hydrophilic of the blended polymers films. The effect of two types of positive S.aurous and negative E. coli was studied. The results showed that the nanocomposites were effective for both types, where the activity value ranged from (12 ~ 21). The best results were found for S.aurous bacteria.

Local Stiffness in Nylon 6/Rubber Blends Determined by Digital Pulsed Force Mode-SPM

2005 ◽  
Vol 11 (S03) ◽  
pp. 134-137 ◽  
Author(s):  
M. G. Segatelli ◽  
C. A. R. Costa ◽  
F. Galembeck ◽  
M. C. Goncalves
Keyword(s):  
Mechanical Properties ◽  
Polymer Blends ◽  
Polymer Blend ◽  
Binary Blends ◽  
Rubber Blends ◽  
Thermoplastic Matrix ◽  
Force Mode ◽  
Two Phases ◽  
Local Stiffness ◽  
Soft Rubber

The incorporation of soft rubber into a thermoplastic matrix can lead to tough blends. Generally, such binary blends are immiscible and exhibit poor mechanical properties caused by the unfavorable interactions between the two phases. Thus, there is an enormous interest in polymer blend compatibility to improve the properties of the polymer blends by the addition of an appropriate compatibilizer [1,2].

scholarly journals Synthesis and Characterisation of Carboxymethyl Cellulose Based Bentonite Polymer Blend

2020 ◽  
Vol 8 (5) ◽  
pp. 5661-5664
Keyword(s):  
Polymer Blends ◽  
Polymer Blend ◽  
Carboxymethyl Cellulose ◽  
Bentonite Clay ◽  
Cross Linking ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Ftir Studies ◽  
Ft Ir ◽  
Tga And Dsc

Polymer blend of carboxymethyl cellulose (CMC) and bentonite clay were prepared in the presence and absence of the cross linking agent glutaraldehyde. The synthesized compounds were characterized using FT-IR, XRD, TGA and DSC analysis. The percentage of yield obtained is higher for the polymer blend prepared with glutaraldehyde as cross liking agent. The result of FTIR studies showed the various peaks corresponding to the functional groups present in the two polymer, which clearly indicates the presence of strong cross linking between the polymer and cross linking agent. Similarly, thermal gravimetric analysis revealed that enhanced thermal stability for the polymer blends along with glutaraldehyde. X-ray diffraction studies prove that the polymer blends have higher crystallinity when blending with glutaraldehyde.

Polymer-Infiltrated Nanoparticle Films Using Capillarity-Based Techniques: Toward Multifunctional Coatings and Membranes

2021 ◽  
Vol 12 (1) ◽  
pp. 411-437
Author(s):  
R. Bharath Venkatesh ◽  
Neha Manohar ◽  
Yiwei Qiang ◽  
Haonan Wang ◽  
Hong Huy Tran ◽  
...  
Keyword(s):  
Capillary Condensation ◽  
Capillary Rise ◽  
Polymer Melt ◽  
Polymer Nanocomposite ◽  
Nanocomposite Films ◽  
Infiltration Process ◽  
Solvent Vapor ◽  
Thermally Induced ◽  
Nanoparticle Films ◽  
Potential Applications

Polymer-infiltrated nanoparticle films (PINFs) are a new class of nanocomposites that offer synergistic properties and functionality derived from unusually high fractions of nanomaterials. Recently, two versatile techniques,capillary rise infiltration (CaRI) and solvent-driven infiltration of polymer (SIP), have been introduced that exploit capillary forces in films of densely packed nanoparticles. In CaRI, a highly loaded PINF is produced by thermally induced wicking of polymer melt into the nanoparticle packing pores. In SIP, exposure of a polymer–nanoparticle bilayer to solvent vapor atmosphere induces capillary condensation of solvent in the pores of nanoparticle packing, leading to infiltration of polymer into the solvent-filled pores. CaRI/SIP PINFs show superior properties compared with polymer nanocomposite films made using traditional methods, including superb mechanical properties, thermal stability, heat transfer, and optical properties. This review discusses fundamental aspects of the infiltration process and highlights potential applications in separations, structural coatings, and polymer upcycling—a process to convert polymer wastes into useful chemicals.

Effect of SnO2 Nanoparticle Doping on Structural, Morphological and Thermal Properties of PVA-PVP Polymer Blend

2019 ◽  
Vol 962 ◽  
pp. 82-88
Author(s):  
B. Guruswamy ◽  
V. Ravindrachary ◽  
C. Shruthi ◽  
M. Mylarappa
Keyword(s):  
Thermal Properties ◽  
Polymer Blend ◽  
Doping Level ◽  
Polymer Nanocomposite ◽  
Nitrogen Atmosphere ◽  
Nanocomposite Films ◽  
Average Roughness ◽  
Casting Technique ◽  
Dsc Studies ◽  
Type Semiconductor

The n-type semiconductor SnO2 nanoparticles were synthesised using standard route and the effect of this nanoparticle doping on structural, morphological and thermal properties of PVA-PVP polymer blend has been investigated. Pure and PVA-PVP/SnO2 Nanocomposite films were prepared using solution casting technique. The powder X-ray diffraction result shows that the crystalline nature of the blend increases with doping level. FESEM study shows that the surface morphology of the polymer nanocomposite varies with doping level. AFM study reveals that in the nanocomposite films, the average roughness changes with dopant concentration. The DSC studies on the samples were performed from 40°C to 400°C under nitrogen atmosphere and it shows that the thermal properties of the blend changes with doping concentration.

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