Thermochimica Acta
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Abstract null null The thermal decomposition of extractives can yield additional products, resulting in a different final product distribution of bio-oil, especially for extractives-rich biomass. However, the thermal decompositon behavior of extractives themselves has long been ignored, but deserves deep investigation. Herein, the non-linear stepwise heating program based on Gaussian multi-peak fitting of differential thermogravimetric curve for biomass extractives was designed. Using this stepw...
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#1Oleh Shpotyuk (JDU: Jan Długosz University)H-Index: 27
#2Andrzej Kozdras (Opole University of Technology)H-Index: 16
Last. Peter Baláž (SAV: Slovak Academy of Sciences)H-Index: 32
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Abstract Thermochemical events recognized from heat flux DSC measurements involving dynamic and progressive step-cycling are identified in multi-nanophase substances exemplified by melt-quenched and nanomilling-derived AsxS100-x arsenicals enriched in As over As4S3 composition (As60S40, As62S38, As64S36). Thermal-alteration heat transfer in these alloys composed of normal- and plastic-crystalline phases supplemented by dual-nature amorphous substance are complicated by transformations in nanocry...
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#1Jionghuang He (CSU: Central South University)H-Index: 3
#2Guangcheng Long (CSU: Central South University)H-Index: 19
Last. Youjun Xie (CSU: Central South University)H-Index: 23
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Abstract In this study, isothermal calorimetry and the boundary nucleation and growth model (BNG model) were adopted to investigate the influence of fly ash (FA) and slag (SL) on the nucleation and growth of cement hydrates at early-stage. Afterwards, the mechanism was discussed by analyses of instantaneous activation energy and microtopography. The results show that the hinderance of FA on the early hydration at 20℃ is possibly contributed by its hindering nucleation, while SL promotes nucleati...
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#1Wang LinglongH-Index: 1
#2Xuecheng WuH-Index: 19
Last. Kefa CenH-Index: 77
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#1Osman Konuray (UPC: Polytechnic University of Catalonia)H-Index: 6
#2José M. Morancho (UPC: Polytechnic University of Catalonia)H-Index: 4
Last. Xavier Ramis (UPC: Polytechnic University of Catalonia)H-Index: 37
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Abstract In this work, the curing kinetics of a new ternary acrylate/epoxy/anhydride thermoset system which is used for dual-curing 3D-printing applications is studied. The first curing stage is an acrylate free-radical photopolymerization that can also be triggered using a suitable thermal radical initiator. The second curing stage is an epoxy-anhydride copolymerization initiated at higher temperatures by a nucleophilic tertiary amine. Isothermal acrylate photocure kinetics was modeled using a ...
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#1Jianwu Zhang (Henan University)H-Index: 1
#2Xiao Wang (Henan University)H-Index: 3
Last. Xuemao GuanH-Index: 1
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Abstract null null The effect of naphthalene superplasticizer (FDN) and polycarboxylate superplasticizer (PCE) on hydration kinetics of ultrafine sulfoaluminate cement-based grouting material (USCBGM) was studied. The results showed the hydration process of USCBGM was divided into acceleration, deceleration and stabilization period, being controlled by nucleation (NG), phase boundary reaction (I) and diffusion (D) respectively, which were well simulated through Knudsen and Kondo models. FDN reta...
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#1Sri Nithya Mahottamananda (B. S. Abdur Rahman University)H-Index: 2
#2Vanchhit Kumar Dubey (B. S. Abdur Rahman University)H-Index: 1
Last. P. N. Kadiresh (B. S. Abdur Rahman University)H-Index: 7
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Abstract null null Hybrid rocket fuels are safer and have unique operational and handling features compared to conventional rocket fuels. Here, an attempt to improve the thermal stability and combustion performance of blended fuel Beeswax with Ethylene Vinyl Acetate (EVA) and activated charcoal has been tried. The weight percentage of EVA was varied from 10 to 20 % in the formulation and the activated charcoal by 1 to 2 %. Thermal stability characteristics of Beeswax-EVA based fuel samples were ...
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#1Fanghui Han (USTB: University of Science and Technology Beijing)H-Index: 6
#2Hongbo Zhang (USTB: University of Science and Technology Beijing)
Last. Zengqi Zhang (USTB: University of Science and Technology Beijing)
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Abstract null null The hydration heat of composite binder containing up to 70 % blast furnace ferronickel slag (BFFS) was determined at 25°C, 45°C and 60°C. The hydration kinetics process and parameters were simulated and analysed. BFFS shows pozzolanic activity in a strong alkaline solution. Increasing the BFFS content retards hydration and reduces the exothermic rate. The high temperature dramatically promotes hydration, especially for the composite binder containing no more than 30 % BFFS. Th...
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#1Akihiko Toda (Hiroshima University)H-Index: 31
Abstract null null When polymer crystallization is initiated by an instantaneous athermal nucleation and controlled by two-dimensional secondary nucleation on the growth face, for crystallization from the melt upon cooling at a constant scan rate null null null β null null , an analysis based on the Avrami model reveals that a plot of null null null null β null / null null null ( null null Δ null null null T null peak null null ) null null 2 null null = null β null / null null null ( null null T...
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Top fields of study
Thermal analysis
Organic chemistry
Inorganic chemistry
Chemistry
Materials science
Differential scanning calorimetry
Thermodynamics