Preparation, Characterization and Physical Properties of Polyvinyl Alcohol-Layered Clay Nanocomposites

2014 ◽  
Vol 997 ◽  
pp. 433-437
Author(s):  
Hong Yan Tian ◽  
Yue Hui Wang ◽  
Chun Liu ◽  
Kui Niu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Interlayer Spacing ◽  
Dynamic Mechanical Properties ◽  
Poly Vinyl Alcohol ◽  
Clay Nanocomposites ◽  
Casting Method ◽  
Photochemical Stability ◽  
Layered Clay ◽  
Double Hydroxide

This work focused on the preparation of poly (vinyl alcohol) (PVA)/ layered double hydroxide (LDH) and LDHSA nanocomposites by casting method. The morphology and interlayer spacing of the composites were characterized. The mechanical properties and the photochemical stability of the film of PVA, PVA/LDH and PVA/LDHSA have been studied and compared with PVA/MMT nanocomposites reported in previously. The results indicated that the thermal stability and dynamic mechanical properties of the PVA matrix in the PVA/LDH films and PVA/MMT films was enhanced. PVA/LDH films and PVA/OMMT films were shown stable photochemically more than those of pure PVA.

Fire-safe and environmentally friendly nanocomposites based on layered double hydroxides and ethylene propylene diene elastomer

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26425-26436 ◽  
Author(s):  
Debdipta Basu ◽  
Amit Das ◽  
De-Yi Wang ◽  
Jinu Jacob George ◽  
Klaus Werner Stöckelhuber ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Flame Retardant ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Thermal Stability Of

The capability of layered double hydroxide has been explored as a potential flame retardant filler and the effect of the mechanical properties, dynamic mechanical properties, and thermal stability of the composites was also studied.

Thermal stability and dynamic mechanical behavior of functional multiphase boride ceramics/epoxy composites

2019 ◽  
Vol 39 (6) ◽  
pp. 508-514
Author(s):  
Yannan He ◽  
Zhiqiang Yu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Loss Modulus ◽  
Dynamic Mechanical Properties ◽  
Mechanical Analysis ◽  
Epoxy Composites ◽  
Scanning Calorimetry ◽  
Element Analysis ◽  
Reaction Heat ◽  
Dynamic Mechanical

Abstract The thermal and dynamic mechanical properties of epoxy composites filled with zirconium diboride/nano-alumina (ZrB2/Al2O3) multiphase particles were investigated by means of differential scanning calorimetry, dynamic thermo-mechanical analysis, and numerical simulation. ZrB2/Al2O3 particles were surface organic functional modified by γ-glycidoxypropyltrimethoxysilane for the improvement of their dispersity in epoxy matrix. The results indicated that the curing exotherm of epoxy resin decreased significantly due to the addition of ZrB2/Al2O3 multiphase particles. In comparison to the composites filled with unmodified particles, the modified multiphase particles made the corresponding filling composites exhibit lower curing reaction heat, lower loss modulus, and higher storage modulus. Generally speaking, the composites filled with 5 wt% modified multiphase particles presented the best thermal stability and thermo-mechanical properties due to the better filler-matrix interfacial compatibility and the uniform dispersity of modified particles. Finite element analysis also suggested that the introduction of modified ZrB2/Al2O3 multiphase particles increased the stiffness of the corresponding composites.

Research on Structure and Mechanical Properties of Epoxy Resin/Clay Nanocomposites by Shock Wave Method

2012 ◽  
Vol 501 ◽  
pp. 366-371 ◽  
Author(s):  
Guang Yi Lin ◽  
Xue Chen Mu ◽  
Dian Wei Qu
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Shock Wave ◽  
Epoxy Resin ◽  
Process Condition ◽  
Interlayer Spacing ◽  
Clay Nanocomposites ◽  
Wave Method ◽  
Optimal Process ◽  
Elongation At Break

Epoxy resin / clay nanocomposites prepared by shock wave method. The structure and mechanical properties including hardness, stress, strain and elongation at break were investigated. XRD was used to observe the interlayer spacing of the OMMT and SEM was used to survey the morphology of nanocomposites system. The results indicated that nano-montmorillonite can effectively increase the mechanical property of the material. The nano-montmorillonite was well dispersed in the epoxy matrix. The optimal process condition is that shock time 5min, nano-MMT content of 5%, duty cycle 1:3, shock depth 3cm.

Influence of anionic surface modifiers on the thermal stability and mechanical properties of layered double hydroxide/polypropylene nanocomposites

2015 ◽  
Vol 3 (45) ◽  
pp. 22730-22738 ◽  
Author(s):  
Jae-Hun Yang ◽  
Wei Zhang ◽  
Hyunju Ryu ◽  
Ji-Hee Lee ◽  
Dae-Hwan Park ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Layered Double Hydroxide ◽  
Organic Modifier ◽  
Surface Modifiers ◽  
Polypropylene Nanocomposites ◽  
Loading Amount ◽  
Double Hydroxide ◽  
Thermal Stability Of ◽  
Anionic Surface

The thermal stability of PP was significantly improved after the formation of PP nanocomposites with organo-LDH, which was affected by the type of organic modifier in organo-LDH and the loading amount of organo-LDH.

The properties of sericin/poly(vinyl alcohol) films modified by boric acid

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Qun Wang ◽  
Lu Qi
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Boric Acid ◽  
Vinyl Alcohol ◽  
Water Resistance ◽  
Poly Vinyl Alcohol ◽  
Scanning Calorimetry ◽  
Blend Ratio ◽  
Percutaneous Drug Delivery ◽  
Thermal Stability Of

AbstractA group of films mainly composed of sericin and poly(vinyl alcohol) (PVA), using boric acid (BA) as a modifier, were prepared by a technique of solution casting. In this work, the effect of BA and sericin on the mechanical properties and water resistance of the films was analyzed, the interior morphology of the films were described by a scanning electron microscopy (SEM), the thermal stability of the films was characterized by differential scanning calorimetry (DSC), and the reaction mechanism was proposed according to the previous literature and the test of Fourier transform infrared spectrum (FTIR). Results indicated that, the properties of the membrane were the functions of the blend ratio of sercin to PVA and the content of BA. The use of BA increased the tensile strength, improved the water resistance and the thermal stability, and varied the interior morphology of the films. The content of sericin greatly influenced the combination of properties of the films, especially the mechanical properties, interior morphology, thermal stability, and water resistance reducing with the increasing of sericin content. The films have potential to be used in materials, such as skin-care coatings for beauty, percutaneous drug delivery systems for exterior intact skin, due to the characteristics of the components and the good mechanical properties of the films.

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