The effect of humidity on thermal decomposition of terephthalate polyester

Arii, Tadashi; Masuda, Yasuaki

doi:10.1016/j.jaap.2003.08.006

Cited by 29 publications

(26 citation statements)

References 31 publications

(33 reference statements)

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“…[22,24,27,38] The addition of AlPi did not change the temperature of the main decomposition process. The size of the mass loss step was decreased and an additional minor decomposition process of 5 wt.-% occurred around 750 K. A residue of 35 wt.-% remained.…”

Section: Mass Lossmentioning

confidence: 99%

“…The identified products are in accordance with decomposition models in the literature. [22,24,[38][39][40] Isocyanic acid (HOCN) was observed for the materials containing MC with intensive signals around 3 530, 2 280 and 2 250 cm À1 (Figure 3a). The release of diethylphosphinic acid was detected for the materials containing AlPi (Figure 3b and 3c).…”

Section: Decomposition Productsmentioning

confidence: 99%

“…In this case no residue is formed. [24,38] Indications of these minor reaction pathways were observed; however, they were not considered in the decomposition model in Figure 5. Both additives, AlPi and MC, influenced the main decomposition pathway slightly.…”

Section: Decomposition Modelmentioning

confidence: 99%

See 2 more Smart Citations

Flame Retardancy Mechanisms of Aluminium Phosphinate in Combination with Melamine Cyanurate in Glass‐Fibre‐Reinforced Poly(1,4‐butylene terephthalate)

Braun

Schartel

2008

Macro Materials & Eng

203

154

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The flame retardancy mechanisms of aluminium diethylphosphinate (AlPi) and its combination with melamine cyanurate (MC) in glass‐fibre‐reinforced poly(butylene terephthalate) (PBT/GF) were analysed using TGA including evolved gas analysis (TGA‐FTIR), cone calorimeter measurements using various irradiations, flammability tests (limited oxygen index, LOI, UL 94) and chemical analyses of residues (FTIR, SEM/EDX). AlPi decomposed mainly through the formation of diethylphosphinic acid and aluminium phosphate and influenced the decomposition of the PBT only slightly. AlPi acted mainly through flame inhibition. A halogen‐free V‐0 PBT/GF material was achieved with a LOI of 44%. Additional charring influenced the flammability. MC decomposed independently of the polymer and showed some fuel dilution effects.

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Section: Mass Lossmentioning

confidence: 99%

Section: Decomposition Productsmentioning

confidence: 99%

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Flame Retardancy Mechanisms of Aluminium Phosphinate in Combination with Melamine Cyanurate in Glass‐Fibre‐Reinforced Poly(1,4‐butylene terephthalate)

Braun

Schartel

2008

Macro Materials & Eng

203

154

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“…It could be illustrated that the thermal decomposition of the LGFTP composites in two-step process between 3008C and 4908C. The first process (from 3008C to 3808C) resulted in the TPU decomposition, while the second thermal decomposition step after 3808C was attributed to the mass loss of PBT [34][35][36][37][38]. As shown in Fig.…”

Section: Tga Analysismentioning

confidence: 92%

Study on dynamic mechanical, thermal, and mechanical properties of long glass fiber reinforced thermoplastic polyurethane/poly(butylene terephthalate) composites

Zhang

Qin

et al. 2016

Polymer Composites

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Long glass fiber reinforced thermoplastic polyurethane and Poly (butylene terephthalate) (PBT) (LGFTP) composites with different ratios of TPU and PBT were prepared by using self-designed impregnation device. The dynamic mechanical, thermal, and mechanical properties of LGFTP composites were studied. Results showed that there was good compatibility between TPU and PBT. Dynamic mechanical thermal analysis (DMA) results indicated that the TPU content and scanning frequencies had some influence on dynamic mechanical properties and glass transition of LGFTP composites. In addition, the Arrhenius relationship has been used to calculate the activation energy of atransition of the composites. Differential scanning calorimetry (DSC) analysis indicated that with increasing TPU content the crystallization temperature (T c ), the melting point (T m ), and the percent crystallinity (X c ) decreased. Both TG and DTG curves of the LGFTP composites are shifted to lower temperatures with the increasing of TPU content. Mechanical properties showed that the addition of TPU could lead to a remarkable increase tensile and notched izod impact strength with a small reduction in flexural strength and modulus of LGFTP composites. POLYM. COMPOS., 00:000-000,

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“…Fiddes et al reported that at temperatures below 200 °C the decomposition of Zn(AcAc) 2 in wet conditions is due to a combination of exothermic intramolecular and intermolecular processes while at temperatures above 200 °C a water enhanced pyrolised mechanism is likely active [17]. Arii et al reported a lowering of the decomposition temperature in a high water vapor pressure environment and suggest that crystalline ZnO can be synthesized at temperatures as low as 11 °C via the following simplified decomposition scheme [18]:…”

Section: Precursors Chemistrymentioning

confidence: 99%

Morphology engineering of ZnO nanostructures

Khranovskyy

Yakimova

2012

Physica B: Condensed Matter

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The nanosized ZnO structures were grown by atmospheric pressure metalorganic chemical vapor deposition (APMOCVD) at the temperature range 200 -500 °C at variable precursor pressure. The temperature induced evolution of the ZnO microstructure was observed, resulting in regular transformation of the material from conventional polycrystalline layers to hierarchically arranged sheaves of ZnO nanowires. The structures obtained were uniformly planarly located over the substrate and possessed as low nanowires diameter as 30 -45 nm at the tips. The observed growth evolution is explained in term of ZnO crystal planes free energy difference and growth kinetic. For comparison, the convenient growth at constant precursor pressure on Si and SiC substrates has been performed, resulted in island-type grown ZnO nanostructures. The demonstrated nanosized ZnO structures may have unique possible areas of application, which are listed here. PACS keywordsZnO nanostructures, APMOCVD, temperature evolution IntroductionEngineering of the crystal's morphology and microstructure has initiated great research interest. Particularly control of the shapes, size and morphology of novel or mature functional materials is of high interest, enabling manifestation of their novel properties or tailorable functions. Zinc oxide is a promising II-VI semiconductor, having wide band gap ~3.37 eV and a large exciton binding energy ~60 meV at room temperature. It has attracted increasing interest due to its potential applications in electronics [1], photonics [2], sensors [3], transistors [4], field emission displays [5], etc. It is one of the most gifted materials for the fabrication of short-wavelength optoelectronic devices including blue-UV light-emitting and room temperature UV lasing diodes [6]. ZnO possesses one of the richest family of nanostructures: various nanorods, nanopillars, nanowires, nanodonats, nanodrums, nanopropellers, nanonails, nanobridges etc. have been widely reported in literature [7]. However, such exotic morphologies of ZnO nanostructures complicate their functionality, i. e. hamper their practical applications, while the controllable growth of ordered and uniform ZnO nanostructure is highly desirable and may enable their possible applications in various devices. Particular interest represents the hierarchical ZnO nanostructures, being able to combine the high surface-to-volume ratio and fundamental material properties of ZnO, which may be essential for specific applications such as gas-and bio-sensors, hybrid solar cells, etc [8]. Recently, we have demonstrated the ability to grow well-ordered ZnO nanopillars on a seeding layer via selective homoepitaxial growth by atmospheric pressure metalorganic chemical vapor deposition (APMOCVD) [9]. Moreover, by this technique we succeeded in obtaining ZnO nanostructures of diverse morphology. Clear evolution of the

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The effect of humidity on thermal decomposition of terephthalate polyester

Cited by 29 publications

References 31 publications

Flame Retardancy Mechanisms of Aluminium Phosphinate in Combination with Melamine Cyanurate in Glass‐Fibre‐Reinforced Poly(1,4‐butylene terephthalate)

Flame Retardancy Mechanisms of Aluminium Phosphinate in Combination with Melamine Cyanurate in Glass‐Fibre‐Reinforced Poly(1,4‐butylene terephthalate)

Study on dynamic mechanical, thermal, and mechanical properties of long glass fiber reinforced thermoplastic polyurethane/poly(butylene terephthalate) composites

Morphology engineering of ZnO nanostructures

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