Article
Materials Science, Paper & Wood
Yang Zhao, Bo Jin, Tian Zheng, Rufang Peng
Summary: This study synthesized novel arylmalonamide[70]fullerocyclopropanes and investigated their thermal stability and influence on the thermal decomposition of nitrocellulose. The results showed that these compounds can significantly improve the thermal stability of nitrocellulose, presenting promising potential for applications as stabilizers.
Article
Thermodynamics
Yang Zhao, Bo Jin, Tian Zheng, Rufang Peng
Summary: In this study, a series of aryl[70]fulleropyrrolidine were successfully synthesized and shown to have good thermal stability properties towards nitrocellulose. It was found that these compounds increased the critical explosion temperature, prolonged the discoloration time, and extended the safe storage life of nitrocellulose. Additionally, the feasibility of low-cost and large-scale preparation of these stabilizers using fullerene soot as a precursor was explored.
THERMOCHIMICA ACTA
(2022)
Article
Materials Science, Paper & Wood
Yang Zhao, Bo Jin, Tian Zheng, Rufang Peng
Summary: This study developed tea polyphenol as a natural macromolecule stabilizer to enhance the thermal stability of nitrocellulose. Tea polyphenol was confirmed to have good thermal stability and prolonged the safe storage life of nitrocellulose. It was also shown to inhibit the autocatalytic thermal decomposition of nitrocellulose.
Article
Thermodynamics
Katarzyna Cieslak, Katarzyna Ganczyk-Specjalska, Katarzyna Drozdzewska-Szymanska, Michal Uszynski
Summary: Granules containing different nitrogen content and stabilizers were prepared and studied for their physicochemical and thermal properties. The degree of gelling, nitrogen content, and stabilizer type play significant roles in the thermal decomposition process of the granules.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Katarzyna Cieslak, Katarzyna Ganczyk-Specjalska, Katarzyna Drozdzewska-Szymanska, Marta Krolikowska, Marcin Jakubczak
Summary: The study utilized experimental methods to investigate phase diagrams, granular physicochemical and thermal properties, as well as eutectic points of two binary mixtures. The research revealed that eutectic mixtures of stabilizers prevent decomposition reactions more effectively than individual compounds as stabilizers.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Multidisciplinary
Jie Xiong, Bo Jin, Xue-mei Yu, Ling Liao, Ru-fang Peng
Summary: A series of fullerene anisole derivative stabilizers were synthesized and characterized, showing good compatibility with nitrocellulose and effective stabilization of its degradation process.
DEFENCE TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jie Xiong, Shuang Feng, Rufang Peng, Bo Jin
Summary: The stereoselective preparation of fullerene bis-adducts through nontethered methods is challenging due to the production of significant amount of regioisomers. The trans-4 aziridino[60]fullerenes were selectively synthesized without a catalyst by reacting octabromofullerene with corresponding aniline. Characterization through NMR, UV-vis spectroscopy, and X-ray analysis was provided. The possible synthesis process of highly regioselective trans-4-bisaziridino[60]fullerenes was proposed along with exploring their potential application as propellant stabilizers.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Paper & Wood
Shiying Li, Yu Li, Yajun Ding, Ye Yuan, Zhongliang Xiao
Summary: This paper successfully synthesized sodium carboxymethyl-nitrocellulose (CMNC) with thermal stability, flame suppression, and anti-migration properties by reacting nitrocellulose with denitration and etherification. The thermal stability of CMNC was found to be better than that of original nitrocellulose, and its thermal decomposition behaviors were similar to both nitrocellulose and carboxymethyl cellulose.
Review
Biochemistry & Molecular Biology
Nuri Gueven, Pranathi Ravishankar, Rajaraman Eri, Emma Rybalka
Summary: Idebenone is widely described as an antioxidant drug, but there is a significant discrepancy between its pharmacokinetics and achievable tissue levels in target tissues, casting doubt on our current understanding. A new framework has been proposed based on recent discoveries to explain its mode of action, providing a rational approach for testing its effects in novel indications.
Article
Chemistry, Applied
Zhimin Fu, Zhanhong Yang, Lie Deng, Yao Rong, Jian Wu
Summary: THAM and its derivative have been proven to be good organic thermal stabilizers for flexible PVC, with THAM showing excellent thermal stability and DHD having a synergistic effect with traditional stabilizers. In contrast, PER has no thermal stabilizing efficiency for PVC when used alone. Additionally, a possible mechanism explaining the stabilizing efficiency of THAM has been proposed at the end of the article.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Ling Liao, Bo Jin, Zhi-cheng Guo, Fei Xian, Chen-jie Hou, Ru-fang Peng
Summary: The study explores the impact of the position and number of pyrrolidine bound to the carbon cage on the stabilization effect of fulleropyrrolidine derivatives to nitrocellulose/nitroglycerine. Results show that the stabilization effect of the bisadducts is significantly better than that of monoadduct and C60, with different binding positions affecting the stabilization effect differently. Further analysis using EPR and FT-IR reveals different abilities of fulleropyrrolidine bisadducts to absorb nitroxide, consistent with the performance test results.
DEFENCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ling Hong, Huifeng Yao, Yong Cui, Runnan Yu, You-Wei Lin, Tsung-Wei Chen, Ye Xu, Jinzhao Qin, Chain-Shu Hsu, Ziyi Ge, Jianhui Hou
Summary: In this study, a cross-linkable material, c-PCBSD, was successfully utilized as an interfacial modification layer on the surface of OPV cells to enhance photovoltaic performance and long-term stability. The PCE of the OPV cells increased from 15.1 to 16.1% after the two-step modification, demonstrating improved stability under both thermal and air conditions.
Article
Chemistry, Medicinal
Prajak Khumploy, Achara Raksat, Siwattra Choodej, Thammarat Aree, Nattaya Ngamrojanavanich, Khanitha Pudhom
Summary: A new picrotoxane sesquiterpene and a new oc-pyrone derivative, along with nine known compounds, were isolated from the aerial parts of Dendrobium signatum. The structures of the new compounds were elucidated through various analytical techniques, and the absolute configuration of one compound was confirmed by X-ray diffraction. The new alpha-pyrone exhibited promising antioxidant activity.
JOURNAL OF NATURAL MEDICINES
(2021)
Article
Thermodynamics
Yanqin Shi, Lukai Chen, Biao Ma, Songyan Lu, Si Chen, Huiwen He, Meng Ma, Xu Wang
Summary: The excellent migration resistance and thermal stability of P-UESU make it a promising thermal stabilizer for PVC, with its super low migration ratio and high thermal stability. The addition of auxiliary thermal stabilizers does not affect its migration resistance and thermal stability.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Biochemistry & Molecular Biology
Qiong Wang, Xiao-Hong Wang, Qing Pan, Hai Chang, Hong-Jian Yu, Wei-Qiang Pang
Summary: The thermal behaviors of nano-scale composite energetic materials composed of ADN and NC were studied using various instruments. The results showed that the interaction mechanism between ADN and NC is crucial for the design and safety of these materials. The mixture of NC and ADN exhibited different thermal decomposition characteristics compared to NC or ADN alone. ADN initiated the interaction with NC, leading to the formation of oxidative gases. The thermal decomposition process of ADN dominated the initial stage of the mixture, followed by the oxidation of NC and the cation of ADN.