Documents disponibles écrits par cet auteur

Thermal properties and combustion behaviors of chitosan based flame retardant combining phosphorus and nickel / Shuang Wu in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3663-3669 Titre : Thermal properties and combustion behaviors of chitosan based flame retardant combining phosphorus and nickel Type de document : texte imprimé Auteurs : Shuang Wu, Auteur ; Lei Song, Auteur ; Haifeng Pan, Auteur Année de publication : 2012 Article en page(s) : pp. 3663-3669 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Flame  retardant  Combustion  Thermal  properties Résumé : A renewable carbonization agent based compound nickel chitosan phosphate (NiPCS) has been prepared, which was the combination of flame retardant and synergist. Its effect on thermal properties and flammability of poly(vinyl alcohol) (PVA) has been investigated. Microscale combustion calorimetry (MCC) test proved that NiPCS can decrease the intensities of heat release rate (PHRR) and total heat release rate (THR) greatly. Thermogravimetric analysis (TGA) results indicated that NiPCS possessed a high formation of char. With the increase of the flame retardant, the thermal stability of materials enhanced in high temperature. Real time Fourier transform infrared (RT-IR) data confirmed that the flame retardant can promote the dehydration effect as well as accelerate the char forming. The volatilized products and the synergistic effect of nickel on thermal properties were both investigated with thermogravimetric analysis/infrared spectrometry (TGA-IR) and laser Raman spectroscopy (LRS). The results revealed that nickel restrained the thermal degradation of materials as well as improved the structural organization level of char. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595794 [article] Thermal properties and combustion behaviors of chitosan based flame retardant combining phosphorus and nickel [texte imprimé] / Shuang Wu, Auteur ; Lei Song, Auteur ; Haifeng Pan, Auteur . - 2012 . - pp. 3663-3669. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3663-3669 Mots-clés : Flame  retardant  Combustion  Thermal  properties Résumé : A renewable carbonization agent based compound nickel chitosan phosphate (NiPCS) has been prepared, which was the combination of flame retardant and synergist. Its effect on thermal properties and flammability of poly(vinyl alcohol) (PVA) has been investigated. Microscale combustion calorimetry (MCC) test proved that NiPCS can decrease the intensities of heat release rate (PHRR) and total heat release rate (THR) greatly. Thermogravimetric analysis (TGA) results indicated that NiPCS possessed a high formation of char. With the increase of the flame retardant, the thermal stability of materials enhanced in high temperature. Real time Fourier transform infrared (RT-IR) data confirmed that the flame retardant can promote the dehydration effect as well as accelerate the char forming. The volatilized products and the synergistic effect of nickel on thermal properties were both investigated with thermogravimetric analysis/infrared spectrometry (TGA-IR) and laser Raman spectroscopy (LRS). The results revealed that nickel restrained the thermal degradation of materials as well as improved the structural organization level of char. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595794

Thermal properties of novel 9,10-Dihydro - 9 - oxa - 10 - phosphaphenanthrene 10 - oxide - based organic / inorganic hybrid materials prepared by sol – gel and UV - curing processes / Xiaodong Qian in Industrial & engineering chemistry research, Vol. 51 N° 1 (Janvier 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 85-94 Titre : Thermal properties of novel 9,10-Dihydro - 9 - oxa - 10 - phosphaphenanthrene 10 - oxide - based organic / inorganic hybrid materials prepared by sol – gel and UV - curing processes Type de document : texte imprimé Auteurs : Xiaodong Qian, Auteur ; Haifeng Pan, Auteur ; Wei Yi Xing, Auteur Année de publication : 2012 Article en page(s) : pp. 85-94 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Ultraviolet  radiation  Thermal  properties Résumé : A novel liquid monomer (DOPO―VTS) containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) and silicon was synthesized by allowing DOPO to react with vinyltrimethoxysilane (VTS). The DOPO-based organic/inorganic hybrid materials were prepared by the sol―gel and UV-curiug methods. The scanning electron microscope results showed that the inorganic substance exhibited good compatibility with the epoxy acrylate (EA) matrix. The high content of organic/inorganic networks contributes an excellent flame retardancy to epoxy acrylate, which can be confirmed by the limiting oxygen index and microscale combustion calorimeter results. The thermogravimetic analysis (TGA) data indicate that the EA/ DOPO-VTS hybrid materials possess higher thermal stability than that of pure EA at high temperature. From the direct pyrolysis/ mass (DP-MS) analysis, the organic/inorganic networks can play the role of radical trap, which would consume highly reactive hydrogen and hydroxy radicals during combustion. Besides, the dynamic FTIR and DP—MS were used to analyze the thermal degradation mechanism of the organic/inorganic hybrids. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476449 [article] Thermal properties of novel 9,10-Dihydro - 9 - oxa - 10 - phosphaphenanthrene 10 - oxide - based organic / inorganic hybrid materials prepared by sol – gel and UV - curing processes [texte imprimé] / Xiaodong Qian, Auteur ; Haifeng Pan, Auteur ; Wei Yi Xing, Auteur . - 2012 . - pp. 85-94. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 85-94 Mots-clés : Ultraviolet  radiation  Thermal  properties Résumé : A novel liquid monomer (DOPO―VTS) containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) and silicon was synthesized by allowing DOPO to react with vinyltrimethoxysilane (VTS). The DOPO-based organic/inorganic hybrid materials were prepared by the sol―gel and UV-curiug methods. The scanning electron microscope results showed that the inorganic substance exhibited good compatibility with the epoxy acrylate (EA) matrix. The high content of organic/inorganic networks contributes an excellent flame retardancy to epoxy acrylate, which can be confirmed by the limiting oxygen index and microscale combustion calorimeter results. The thermogravimetic analysis (TGA) data indicate that the EA/ DOPO-VTS hybrid materials possess higher thermal stability than that of pure EA at high temperature. From the direct pyrolysis/ mass (DP-MS) analysis, the organic/inorganic networks can play the role of radical trap, which would consume highly reactive hydrogen and hydroxy radicals during combustion. Besides, the dynamic FTIR and DP—MS were used to analyze the thermal degradation mechanism of the organic/inorganic hybrids. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476449

Transparent epoxy acrylate resin nanocomposites reinforced with cellulose nanocrystals / Haifeng Pan in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16326-16332 Titre : Transparent epoxy acrylate resin nanocomposites reinforced with cellulose nanocrystals Type de document : texte imprimé Auteurs : Haifeng Pan, Auteur ; Lei Song, Auteur ; Liyan Ma, Auteur Année de publication : 2013 Article en page(s) : pp. 16326-16332 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanocrystal  Nanocomposite Résumé : A series of nanocomposites based on cellulose nanocrystals (CNCs) and epoxy acrylate resin (EA) were prepared using solution casting followed by UV curing. The microstructure of the CNCs and nanocomposites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The thermal behavior and dynamic mechanical properties of the nanocomposites were determined using dynamical mechanical analysis (DMA) and thermogravimetric analysis (TGA). The transparency of the nanocomposite films was examined by UV―vis transmission spectroscopy. TGA results showed that the thermal stability of EA was affected slightly after incorporation of CNCs. The results from DMA showed that the storage modulus of nanocomposites improved over the entire temperature range compared to pure EA derived from the reinforcing effect of the CNCs. The glass transition temperature of nanocomposites was increased with the increase of CNC loading levels. The ultraviolet-visible spectra of the films showed no obvious absorbance over a range of 400—800 nm, which revealed that the films were transparent. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732159 [article] Transparent epoxy acrylate resin nanocomposites reinforced with cellulose nanocrystals [texte imprimé] / Haifeng Pan, Auteur ; Lei Song, Auteur ; Liyan Ma, Auteur . - 2013 . - pp. 16326-16332. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16326-16332 Mots-clés : Nanocrystal  Nanocomposite Résumé : A series of nanocomposites based on cellulose nanocrystals (CNCs) and epoxy acrylate resin (EA) were prepared using solution casting followed by UV curing. The microstructure of the CNCs and nanocomposites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The thermal behavior and dynamic mechanical properties of the nanocomposites were determined using dynamical mechanical analysis (DMA) and thermogravimetric analysis (TGA). The transparency of the nanocomposite films was examined by UV―vis transmission spectroscopy. TGA results showed that the thermal stability of EA was affected slightly after incorporation of CNCs. The results from DMA showed that the storage modulus of nanocomposites improved over the entire temperature range compared to pure EA derived from the reinforcing effect of the CNCs. The glass transition temperature of nanocomposites was increased with the increase of CNC loading levels. The ultraviolet-visible spectra of the films showed no obvious absorbance over a range of 400—800 nm, which revealed that the films were transparent. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732159