Thermal degradation investigation of poly(ethylene terephthalate)/fibrous silicate nanocomposites

Yuan, Xuepei; Li, Chuncheng; Guan, Guoqing; Xiao, Yaonan; Zhang, Dong

doi:10.1016/j.polymdegradstab.2007.11.010

Cited by 41 publications

(28 citation statements)

References 28 publications

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“…It is worth mentioning that residual PVP from the synthesis process of the Ag NWs, and amorphous citrate complexes from the synthesis process of Ag NPs could be present at the interfaces of the particles and influence the sintering of the paste. Although PVP does not readily decompose at below 300°C [46,47], the majority of this material would be removed during the process of washing with DI water as previously shown when the PVP coating was washed from Cu NPs [24]. As such, it would be expected that the particle surface free of PVP is active for low temperature sintering.…”

Section: Resultsmentioning

confidence: 99%

Reinforcement of Ag nanoparticle paste with nanowires for low temperature pressureless bonding

Peng

Zhao

et al. 2012

J Mater Sci

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Low temperature interconnection processes for lead-free packaging and flexible electronics are currently of great interest. Several studies have focused on bonding using silver nanoparticles (Ag NPs) or copper nanoparticles (Cu NPs). However, pressure assistance is generally necessary for bonding with nanomaterial pastes, which limits its industrial applications. Here, a unique method for bonding of copper wires using Ag NP and nanowire binary pastes is examined, in which joining is accomplished from 60 to 200°C and yet without the application of pressure. Bonding is facilitated by solid state sintering of Ag nanomaterials and metallic bonding between Cu and Ag interfaces. The effects of different additions of Ag nanowires in bonded joints are studied, in which addition of 20 vol% Ag nanowires improves bonding strength after low temperature sintering by 50-80 % compared with Ag nanoparticle paste. A mechanical reinforcement effect due to introduction of Ag nanowires has been confirmed by observation of the fracture path propagation, where necking, breakage and pullout of nanowires occur on loading. This low temperature pressureless bonding technology has the potential for wide use for interconnection in lead-free microcircuits and flexible electronic packaging.

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Section: Resultsmentioning

confidence: 99%

Reinforcement of Ag nanoparticle paste with nanowires for low temperature pressureless bonding

Peng

Zhao

et al. 2012

J Mater Sci

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“…The TGA technique is useful to study complex systems like polymer blends [15,16] and nanocomposites [17,18]. The thermal decomposition of the nanocomposites was studied for a wide range of compositions by systematically changing the nature of the macromolecule (polymer) or the nanofiller.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Preparation and Characterization of K-Carrageenan/Nanosilica Biocomposite Film

Rane

Savadekar

Kadam

et al. 2014

Journal of Materials

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The purpose of this study is to improve the performance properties of K-carrageenan (K-CRG) by utilizing nanosilica (NSI) as the reinforcing agent. The composite films were prepared by solution casting method. NSI was added up to 1.5% in the K-CRG matrix. The prepared films were characterized for mechanical (tensile strength, tensile modulus, and elongation at break), thermal (differential scanning calorimetry, thermogravimetric analysis), barrier (water vapour transmission rate), morphological (scanning electron microscopy), contact angle, and crystallinity properties. Tensile strength, tensile modulus, and crystallinity were found to have increased by 13.8, 15, and 48% whereas water vapour transmission rate was found to have decreased by 48% for 0.5% NSI loaded K-CRG composite films. NSI was found to have formed aggregates for concentrations above 0.5% as confirmed by scanning electron microscopy. Melting temperature, enthalpy of melting, and degradation temperature of K-CRG increased with increase in concentration of NSI in K-CRG. Contact angle also increased with increase in concentration of NSI in K-CRG, indicating the decrease in hydrophilicity of the films improving its water resistance properties. This knowledge of the composite film could make beneficial contributions to the food and pharmaceutical packaging applications.

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“…It is already known that PET/clay nanocomposites show onset decomposition temperature of 3-19°C higher than that of pure PET [21]. Moreover, Yuan et al [22] reported that during thermal decomposition in nitrogen the clay can slow down degradation of polymer by acting as a mass transport protective barrier, however, the catalytic effect of the metal derivatives in the clays could accelerate the decomposition behavior of PET. Vassiliou et al also reported that the addition of MWCNTs during in situ polymerization of PET affected most of its properties.…”

Section: Introductionmentioning

confidence: 99%

Thermal degradation kinetics of PET/SWCNTs nanocomposites prepared by the in situ polymerization

Pilawka

Paszkiewicz

Rosłaniec

2013

J Therm Anal Calorim

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The decomposition and thermal behavior of poly(ethylene terephthalate) (PET)/carbon nanotubes (CNTs) nanocomposites were studied using thermogravimetric (TG) analysis in air atmosphere. A series of PET/ single-walled CNTs (SWCNTs) materials of varying nanoparticles concentration were prepared using the in situ polymerization technique. Transmission electron microscopy and scanning electron microscopy micrographs verified that the dispersion of the SWCNTs in the PET matrix was homogeneous, while some relatively small aggregates co-existed at higher filler concentration. Two-stage decomposition was observed in the experiments. During first stage, strong chemical bonds are broken, i.e., aliphatic bonds and benzyl ring containing molecules decompose into small molecules in the gaseous phase. During second stage, when temperature is higher, the remaining nanotubes along with the residues of the first stage are burned. 10,20, ) methods were applied to TG data to obtain kinetic parameters (activation energy, Arrhenius constant at 600 K and A factor) and Criado method to kinetics model analysis. In this kinetic model, energy activation is increasing with the increase of nanotubes concentration.

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Thermal degradation investigation of poly(ethylene terephthalate)/fibrous silicate nanocomposites

Cited by 41 publications

References 28 publications

Reinforcement of Ag nanoparticle paste with nanowires for low temperature pressureless bonding

Reinforcement of Ag nanoparticle paste with nanowires for low temperature pressureless bonding

Preparation and Characterization of K-Carrageenan/Nanosilica Biocomposite Film

Thermal degradation kinetics of PET/SWCNTs nanocomposites prepared by the in situ polymerization

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