Article
Chemistry, Multidisciplinary
Jianxing Li, Zepei Yan, Ming Liu, Xiaokun Han, Tianyun Lu, Ruiyin Liu, Shugao Zhao, Qing Lv, Bo Li, Shengqin Zhao, He Wang
Summary: In this study, a novel environmental flame retardant (Lig-K-DOPO) based on lignin, silicon, phosphorus, and nitrogen was synthesized. Lig-K-DOPO exhibited enhanced thermal stability and promoted the curing rate and crosslink density of SBR. It also showed impressive flame retardancy and smoke suppression. The addition of Lig-K-DOPO significantly reduced the peak heat release rate, total heat release, smoke production rate, and peak smoke production rate of SBR blends.
Article
Polymer Science
Yankun Chen, Biao Wang
Summary: The thermal degradation behavior of polypropylene (PP) with 20 wt.% diatomite (DM) was investigated using TG-FTIR and GC-MS techniques. The addition of DM lowered the initial decomposition temperature of PP and resulted in the formation of more olefin degradation products. The catalytic effects of DM on the degradation of PP and the changes in PP chain scission pathways were observed.
Article
Energy & Fuels
Malgorzata Labus
Summary: This study focused on the decomposition reactions of pyrite under different atmospheres, in kerogen and bulk source rock, and the evolved gases. The results showed that only SO2 gas was detected during pyrite decomposition. Pyrite content over 10% in a rock sample can be detected, and SO2 is released during combustion and pyrolysis processes.
Article
Thermodynamics
Marta Worzakowska
Summary: The chemical modification of potato starch with cyclohexyl methacrylate resulted in copolymers with lower polar solvent swelling and higher chemical resistance. These novel materials exhibited excellent thermal stability and the pyrolysis process revealed emission of different structure volatiles.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Biochemistry & Molecular Biology
Agnieszka Ostasz, Renata Lyszczek, Krzysztof Sztanke, Malgorzata Sztanke
Summary: To study the thermal behavior and decomposition pathway of a class of potential molecular pharmaceutics, thermal studies were conducted under inert and oxidative atmospheres. It was found that the decomposition pathways of the compounds were different in the two atmospheres, with higher thermal stability observed under a synthetic air atmosphere. The oxidative decomposition process of the studied molecules was found to occur in three stages accompanied by exothermic effects. The compounds exhibited polymorphic behavior, with the meta-chloro derivative showing the most interesting results.
Article
Thermodynamics
Gessiane F. Germano, Augusto L. Souto, Wamberto A. M. De Almeida, Fatima D. Freire, Dayanne L. Porto, Ana P. B. Gomes, Leandro S. Ferreira, Fernando H. A. Nogueira, Rita C. O. Sebastiao, Raquel B. Giordani, Cicero F. S. Aragao
Summary: The study characterized Monocrotaline using thermal and non-thermal techniques, revealing structural changes and decomposition processes at specific temperatures. The kinetic parameters indicated a significant contribution of geometric contraction models to the degradation process, in accordance with the experimental results.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Energy & Fuels
Liangliang Wang, Tengfei Wang, Yao Zhang, Xiaoqiang Peng, Wei Song, Jinshun Yang, Chengdong Yuan
Summary: The thermo-oxidative characteristics and kinetics of HQ heavy oil were studied using TG-DSC-FTIR-MS technique. The oxidation reactions of HQ heavy oil were divided into low temperature oxidation, fuel deposition, and high temperature combustion stages. The reaction mechanisms were analyzed using FTIR and MS analysis. The obtained data provide important references for understanding crude oil oxidation mechanism and simulating ISC processes accurately.
Article
Thermodynamics
Ruidong Zhao, Jianguang Qin, Tianju Chen, Jinhu Wu
Summary: The combustion behaviors and pollutants emission characteristics during co-combustion of bituminous coal semicoke and lignite were investigated. The addition of lignite improved the combustion performance and high heating rate increased the combustion intensity. The lignite blend ratio affected the combustion process and emission characteristics.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
Magdalena Brzezinska, Elzbieta Szubiakiewicz, Marcin Jedrzejczyk
Summary: Thermogravimetric analysis in combination with FTIR spectroscopy was used to assess the thermal stability and mechanism of degradation of poly(N-vinylpyrrolidone) (PVP) grafted on the surface of silica under oxidizing and reducing conditions before and after impregnation of noble metals. The presence of noble metals decreases the thermal stability of the polymer under reducing conditions, while under oxidative conditions, the degradation temperature is similar to bare PVP/SiO2.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Energy & Fuels
Malgorzata Wzorek, Robert Junga, Ersel Yilmaz, Bohdan Bozhenko
Summary: The combustion of olive byproducts was investigated using the TG-FTIR technique, determining reaction regions, ignition, and burnout temperatures at different heating rates, as well as calculating combustion, ignition, burnout, and flammability indexes. Results showed that waste from the three-phase system had the highest combustion index values, igniting more quickly and yielding faster compared to other types of olive biomass. Changes in activation energy fell within the range of 130-140 kJ/kmol, and FTIR analyses showed differences in exhaust gas composition for specific combustion temperature ranges.
Article
Energy & Fuels
Hsien-Tsung Lin, Guan-Bang Chen, Yei-Chin Chao
Summary: This study investigated the thermochemical conversion process of a single wood pellet under low temperatures (350 degrees C-650 degrees C) and identified outstanding low-temperature ignition and combustion characteristics. The results showed that there was a shift from heterogeneous-induced homogeneous combustion phenomenon to volatile auto-ignite mode depending on temperature conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Paper & Wood
Ning Shao, Yaqing Qu, Li Hou, Yonghua Hu, Zhengfeng Tian, Yun Gao, Xiaolan Zhu
Summary: This study prepared flame retardant reconstituted tobacco sheets using starch and its derivatives, and found that these starch-based flame retardants could effectively suppress the combustion behavior of RTS through thermal degradation and combustion property analysis.
Article
Engineering, Chemical
He Wu, Na Yang, Yan Tang, Jun-Cheng Jiang, An-Chi Huang
Summary: This paper investigates the use of emulsifier T152 to enhance the thermal stability of propellant in fireworks. The study confirms that the emulsifier T152 can improve the thermal stability of the propellant. This research is of great significance for the fireworks industry as it helps reduce potential safety risks.
Article
Thermodynamics
Mohan Govindasamy, Silambarasan Rajendran
Summary: This investigation explores the potential use of sapota biodiesel as a partial substitute for diesel fuel, demonstrating promising thermal stability, combustion characteristics, and reduced emissions. Experimental results show that the brake thermal efficiency of B20 is 1.08% higher than diesel, but the NO emissions from biodiesel are elevated due to a higher quantity of unsaturated esters.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Chengxin Wang, Haobo Bi, Qizhao Lin, Chunlong Jiang, Xuedan Jiang, Kesheng Meng
Summary: This study evaluated the co-combustion of sewage sludge and rice husk using TG-FTIR, showing improved combustion behavior with increasing rice husk blending ratio and minimum activation energy at 30% blending. Analysis of gaseous products and functional groups revealed CO2 as the predominant volatile with increasing rice husk blending ratio.
BIOENERGY RESEARCH
(2021)
