Thermal Stability and Degradation of Polymer Nanocomposites

2016 ◽  
pp. 167-190 ◽  
Author(s):  
T. M. Majka ◽  
A. Leszczyńska ◽  
K. Pielichowski
Keyword(s):  
Thermal Stability ◽  
Polymer Nanocomposites

Thermal Stability and Decay Resistance Properties of Tropical Wood Polymer Nanocomposites (WPNC)

2013 ◽  
Vol 667 ◽  
pp. 482-489 ◽  
Author(s):  
Md. Saiful Islam ◽  
Sinin Hamdan ◽  
Mohamad Rusop ◽  
Md. Rezaur Rahman
Keyword(s):  
Thermal Stability ◽  
Polymer Nanocomposites ◽  
Phenol Formaldehyde ◽  
Brown Rot ◽  
Decay Resistance ◽  
White Rot ◽  
Postia Placenta ◽  
Tropical Wood ◽  
Wood Polymer ◽  
The Fourier Transform

The effects of nanoclay on the thermal stability and decay resistance properties of tropical wood polymer nanocomposites (WPNCs) were investigated in this work. WPNC were prepared from several selected tropical wood species by impregnating the selected woods with a combination of nanoclay and phenol formaldehyde (PF) prepolymer mixture. The formation of WPNC was confirmed by the fourier transform infrared spectroscopy (FTIR) analysis. Thermal property of manufactured WPNC in terms of thermogravimetric analysis (TGA) was evaluated, and an improvement in thermal stability was found for fabricated WPNC. The wood was then exposed to two types of fungi; white-rot (polyporous versicolor) and brown-rot (postia placenta), for 12 weeks. Decay was assessed through percentage (%) of weight loss. A significant improvement was found in the treated woods compared to the untreated ones. In addition, the fabricated WPNC showed lower moisture content compared with raw one.

Analysis of thermal stability of polymer nanocomposites based on polypropylene

2013 ◽  
Vol 49 (5-6) ◽  
pp. 333-337
Author(s):  
V. G. Sister ◽  
E. M. Ivannikova ◽  
S. M. Lomakin
Keyword(s):  
Thermal Stability ◽  
Polymer Nanocomposites ◽  
Thermal Stability Of

scholarly journals Review on the Preparation, Structure and Property Relation of Clay-Based Polymer Nanocomposites

KIMIKA ◽  
2017 ◽  
Vol 28 (1) ◽  
pp. 44-56
Author(s):  
David, Jr. P. Peñaloza
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Polymer Nanocomposites ◽  
Review Paper ◽  
Practical Importance ◽  
Barrier Properties ◽  
Structure And Property ◽  
Property Relation ◽  
Enhanced Properties

Clay-based polymer nanocomposites have attracted considerable interest in recent years because of the intermarriage between organic and clay components at nanoscale measurement offers prospect of new and enhanced properties. Resulting nanomaterials are of practical importance in applications that require exceptional mechanical properties, remarkable thermal stability, and good barrier properties. This review paper highlights the benefits we can derive from the preparation of these nanomaterials.

Carbon Nanotube/Polymer Nanocomposites: Improved or Reduced Thermal Stabilities?

2012 ◽  
Vol 722 ◽  
pp. 77-86
Author(s):  
Zhuo Li ◽  
Stewart J. Wilkins ◽  
Kyoung Sik Moon ◽  
C.P. Wong
Keyword(s):  
Thermal Stability ◽  
Free Radical ◽  
Carboxylic Acid ◽  
Polymer Nanocomposites ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Metal Catalyst ◽  
Thermal Stabilities ◽  
Pristine Cnts ◽  
Thermal Stability Of

The effects of carbon nanotubes (CNTs) on the thermal stability of CNT/polymer nanocomposites are discussed using CNT/silicone composites as a model compound. Pristine CNTs can improve the thermal stability of polymer composites due to the high thermal stability of CNTs, their network structure and free radical scavenging capabilities. However, impurities such as metal catalyst residues and defects such as carboxylic acid functional groups in CNTs can lead to decreased thermal stability of CNT/silicone nanocomposites. Acid purification is an efficient way to remove metallic impurities and can enhance free radical scavenging capabilities. However, controlling the amount of oxidation is important to avoid acid catalyzed thermal degradation induced by carboxylic acid groups on CNT surfaces.

scholarly journals AC conductivity and dielectric behavior of poly (o-phenylenediamine)/TiO2 nanocomposites

2017 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Archana S.
Keyword(s):  
Thermal Stability ◽  
Polymer Nanocomposites ◽  
Ac Conductivity ◽  
Oxidative Polymerization ◽  
Dielectric Behavior ◽  
High Thermal Stability ◽  
Spectral Techniques ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
The Stability

Poly (o-phenylenediamine) and their nanocomposites with TiO2 nanoparticles were synthesized using oxidative polymerization technique and the polymer nanocomposites were characterized using spectral techniques like FT-IR, UV-VIS spectroscopy and the morphology have been analyzed by XRD, SEM and TEM. The stability of the prepared polymer nanocomposites was studied using TGA, DTA and found to have high thermal stability. The study of ac conductivity, dielectric property revealed that the formed nanocomposites are semiconducting in nature and can be widely used in the field of energy storage and semiconductor devices, in diodes, batteries etc.

scholarly journals Investigation on the Properties of PMMA/Reactive Halloysite Nanocomposites Based on Halloysite with Double Bonds

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 919 ◽  
Author(s):  
Shiwei Chen ◽  
Zhizhou Yang ◽  
Fuzhong Wang
Keyword(s):  
Mechanical Property ◽  
Thermal Stability ◽  
Molecular Weight ◽  
Polymer Nanocomposites ◽  
Moisture Absorption ◽  
Young Modulus ◽  
Double Bonds ◽  
Scanning Calorimetry ◽  
General Applicability ◽  
Thermal Stability Of

PMMA/reactive halloysite nanocomposites were firstly prepared using reactive halloysite with double bonds. The halloysite was functionalized to improve its dispersion in the polymer matrix. The reactive halloysite could increase the molecular weight of PMMA. The molecular distribution of PMMA/reactive halloysite nanocomposite was more uniform than that of PMMA. The moisture absorption of PMMA/reactive halloysite nanocomposite increased with the addition of the reactive halloysite. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) confirmed that the thermal stability of PMMA/reactive halloysite nanocomposites was greatly enhanced. Significant improvement in the mechanical property of PMMA nanocomposites was achieved by the addition of 3 wt % reactive halloysite. A 31.1% increase in tensile strength and a 64.2% increase in Young’ modulus of the nanocomposites with 3 wt % of the reactive halloysite were achieved. Finally, the formation mechanism of PMMA/reactive halloysites nanocomposites was proposed. This approach demonstrated the potential for general applicability to other polymer nanocomposites.

scholarly journals Polyethylene/Layered Aluminosilicate Nanocomposites: Investigation of Thermal Stability under Static and Dynamic Conditions

2017 ◽  
Vol 18 (4) ◽  
pp. 305
Author(s):  
V.V. Dolgov ◽  
Sh.G. Sadykov ◽  
M.M. Usmanova ◽  
N.R. Ashurov ◽  
S.Sh. Rashidova
Keyword(s):  
Thermal Stability ◽  
Polymer Nanocomposites ◽  
Xrd Analysis ◽  
Dynamic Mode ◽  
Linear Low Density Polyethylene ◽  
Accelerated Tests ◽  
Thermooxidative Destruction ◽  
Modified Montmorillonite ◽  
Thermal Stability Of

Based on linear low-density polyethylene and maleated polyethylene a polymer nanocomposites containing modified montmorillonite have been obtained, structure is investigated by XRD analysis. In turn, by the methods of thermal analysis in static and dynamic modes, the resistance of polymer nanocomposites to oxidative destruction it was investigated. In parallel with this, a comparative analysis of the thermal stability of polymer nanocomposites and polymer compositions containing commercially available organic antioxidants for stabilization of materials based on polyolefins. By results of the analysis carried out in a dynamic mode, for a series of polymer composites the activation energy of thermooxidative destruction was calculated. It is shown that the nanocomposites based on polyethylene, containing the modified montmorillonite not only not concede to polymer compositions with antioxidants in to thermal stability, but also exceed their. Accelerated tests, carried out at relatively high temperatures allowed evaluate the durability of polymer nanocomposites to thermooxidative destruction. Received results allow approve about a long-term thermal stability of these materials in the processing, and in the exploitation conditions.

scholarly journals Thermal Stability of Polypropylene/Organo-Clay Nanocomposites Produced in a Single-Step Mixing Procedure

2008 ◽  
Vol 17 (5) ◽  
pp. 096369350801700 ◽  
Author(s):  
Gordana Bogoeva-Gaceva ◽  
Luljeta Raka ◽  
Bojan Dimzoski
Keyword(s):  
Thermal Stability ◽  
Polymer Nanocomposites ◽  
Single Step ◽  
Clay Nanocomposites ◽  
Melt Mixing ◽  
Oxidation Induction Time ◽  
Modified Clay ◽  
Significant Prolongation ◽  
Organo Clay ◽  
Thermal Stability Of

Thermal stability of polymer nanocomposites prepared by melt mixing of polypropylene (PP) with organo-modified clay (Cloisite C93A) and maleic anhydride grafted polypropylene (PP-g-MA) used as compatibilizer, has been studied. Thermogravimetric analysis (TGA/DTG) results showed improved thermal stability of PP in the presence of organo-clay in oxygen atmosphere. Significant prolongation of oxidation induction time (measured at 200°C) for nanocomposite, in the presence of even 1% organo-modified clay has been found.

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