Article
Polymer Science
Cheng Zhou, Juan Wang, Jianxi Li, Jie Shi
Summary: An efficient preparation method for flame retardant silicon rubbers (FRSR) using melamine cyanurate (MCA) was established. The study analyzed the thermal aging mechanisms and flame retardancy of FRSR, finding that aging decreases tensile strength, increases cross-linking density, and embeds MCA in the samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Asih Melati, Abdelhakim Settar, Khaled Chetehouna, Nazan Okur, Omer Berk Berkalp
Summary: The present study investigates the thermal behavior of new biocomposite materials, with particular focus on their thermal degradation. Thermal characterization at different scales was performed using thermogravimetric analysis and cone calorimeter experiments. The main purpose was to compare the thermal behavior of bamboo-based and banana-based Green Biocomposites (GBCs). An intumescent fire retardant coating was applied to study flame retardancy. The results showed that bamboo-based and banana-based materials exhibit similar thermal degradation pattern, with bamboo-based material outperforming banana-based material in cone calorimeter experiments. The intumescent fire retardant coating significantly improved the flame retardancy of both GBCs.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Han Li, Nasidan Wang, Xuefei Han, Haoran Yuan, Jiang Xie
Summary: The study investigates the thermal degradation mechanism and kinetics of carbon fiber epoxy resin used in aerostructures, analyzing the process under different environments and establishing a kinetic model. Results show differences in thermal degradation steps under inert atmosphere and air atmosphere, providing fundamental support for the application of carbon fiber epoxy resin in the aircraft industry.
Article
Polymer Science
Lucie Zarybnicka, Petra Macova, Dita Machova, Jozef Rychly, Alberto Viani
Summary: The addition of a mix of aluminum hypophosphite (AHP) and melamine cyanurate as flame retardant improves the fire performance of PET-G, but can lead to higher smoke release with increasing structural complexity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Aysenur Mutlu, Aysegul Erdem, Mehmet Dogan
Summary: Using waste materials like chicken feathers and biobased flame-retardant additives has been proven to be an effective method for environmentally friendly and sustainable production. This study investigates the flame retardant effectiveness of melamine phytate (MPht) in thermoplastic polyurethane (TPU)-based biocomposites containing chicken feathers. Test results show that the highest UL-94 V rating of V0, a LOI value of 29.4%, and the lowest pHRR (110 Kw/m²) and THE (39 MJ/m²) values are achieved with the use of 20 wt% MPht. It is demonstrated that MPht acts as an effective flame-retardant filler through intumescent char formation and flame dilution.
Article
Polymer Science
Sheng-Jen Lin, Gwomei Wu
Summary: The thermal degradation kinetics of high-performance polymer composite electrolyte membranes were investigated in this study. Novel porous polymer composite membranes were fabricated by crosslinking poly (ethylene-co-vinyl alcohol) with polybutylene terephthalate nano fiber. The results showed that the higher crosslinking agent content would lower the crystallinity and enhance thermal stability. The triallylamine crosslinking agent improved the membrane ionic conductivity by about 22%.
Article
Thermodynamics
Shanfeng Xu, Hui Xiao, Yuzhu Chen, Jing Li, Ke Jiang, Xie He, Jialin Zhang, Yongze Jiang, Xingyan Huang, Jiulong Xie, Jinqiu Qi
Summary: In this study, tea powder was used as a filler to produce low-formaldehyde-emission tea-based melamine-modified urea-formaldehyde resin. The thermal stabilities and performance of the resulting resin were characterized. The addition of tea powder showed positive effects on improving the properties of the plywood.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Green & Sustainable Science & Technology
Annamaria Vujanovic, Jan Puhar, Maja Colnik, Olivija Plohl, Timotej Vidovic, Julija Volmajer Valh, Mojca Skerget, Lidija Cucek
Summary: Increasing plastic consumption and waste have become a major global concern. This paper utilizes industrial ecology and the circular economy to comprehensively evaluate the sustainable production, recycling, and end-of-life behavior of thermoset plastic materials. The potential to produce these materials sustainably and recycle them is explored, along with the assessment of environmental impacts.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Olivija Plohl, Alen Erjavec, Lidija Fras Zemljic, Alenka Vesel, Maja Colnik, Mojca Skerget, Yee Van Fan, Lidija Cucek, Gregor Trimmel, Julija Volmajer Valh
Summary: The degradation of plastics in soil is a complex process influenced by multiple factors. This study investigated the changes in weight, morphology, surface, and thermal properties of plastics after exposure to soil. The results showed significant changes especially for certain plastics, indicating the role of biological and chemical degradation processes.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biochemical Research Methods
Stephen C. Zambrzycki, Matthew C. Bernier, James A. Bradshaw, Facundo M. Fernandez
Summary: The pyro-VaPI technique integrates pyrolysis, plasma ionization, ion mobility, and mass spectrometry into a single platform for structural characterization of insoluble polymers. Using IM-MS analysis, isobaric dimers and tetramers were detected in nylon polymers, providing valuable insights into their composition.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2021)
Article
Materials Science, Paper & Wood
Junzhi Ma, Fengfeng Feng, Yan Song, Yu Wu, Shaohai Fu, Dong Wang, Minghai Qu
Summary: Bisneopentyl glycol dithiocarboxyphosphate (DDPS) was modified by coating sulfonated melamine formaldehyde resins onto its surface, resulting in the formation of intumescent microcapsule DDPS (MDDPS). MDDPS was then incorporated into viscose fiber spinning solution to prepare flame retardant MDDPS/viscose fiber. The MDDPS/viscose fiber exhibited improved flame retardant efficiency and maintained mechanical properties.
Article
Polymer Science
Rongtao Yang, Yikai Sun, Yuxing Wu, Binqi Wang, Yungang Song, Zhaoquan Sheng, Chunyu Yang, Hongshuai Gao, Yi Nie
Summary: Researchers use [Emim]DEP/H2O solution as the solvent to synthesize MF resin prepolymer (pre-MF) solution, which can be directly spun into fibers. The [Emim]DEP plays a key role in regulating the molecular weight and distribution of the pre-MF solution. Fibers obtained under optimal conditions exhibit excellent mechanical properties, with a fracture strength of 323.8 MPa and elongation at break of 7.2%.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Ismet Kaya, Ruhsar Ela Iris, Hatice Karaer Yagmur
Summary: In this study, a Schiff base, 2,4,6-tris(4-hydroxybenzimino)-1,3,5-triazine (HT), and its derivatives were synthesized and used as building blocks to prepare flame-resistant polymers. The resulting melamine and pentaerythritol-based polymers exhibited excellent flame retardancy.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Electrochemistry
Nagappan Ramaswamy, Samantha Kapushy, Nathan P. Mellott, Ashley Lalonde, Roland Koestner, Frank D. Coms, Swami Kumaraguru
Summary: Precious group metal-based catalysts, such as Pt and Pt-alloys, are commonly used in fuel cell cathodes for the Oxygen Reduction Reaction (ORR). However, their activity is hindered by the adsorption of spectator species, such as sulfonate anions, which compromises the ORR performance. Recent research has shown that the use of melamine organic molecules or melamine-formaldehyde copolymeric additives can improve the ORR activity. In this study, the effectiveness of these additives in fuel cells was evaluated, and it was found that they can suppress adsorption but do not enhance the ORR activity.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Thermodynamics
Paul Hurley, Juliana Pacheco Duarte
Summary: The use of optical fiber temperature sensors to measure the temperature changes in fuel rod simulators during quenching allows for a more in-depth study of factors influencing the quenching process, such as cladding material, liquid subcooling, and surface roughness.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Liutao Yang, Ying Liu, Yujiao Wu, Lanli Deng, Wei Liu, Chunping Ma, Lixin Li
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2016)
Article
Polymer Science
Chun Zhang, Le Yang, Li He, Wei Gong, Zhu Luo, Wei Liu
POLYMERS FOR ADVANCED TECHNOLOGIES
(2018)
Article
Polymer Science
Xian Wu, Wei Liu, Chun Zhang, Li Ren
EUROPEAN POLYMER JOURNAL
(2018)
Article
Polymer Science
Liu Wei, He Shicheng, Zhou Hongfu
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Polymer Science
Wei Liu, Shicheng He, Yujie Yang
POLYMER INTERNATIONAL
(2019)
Article
Materials Science, Biomaterials
Wei Liu, Xunxian Zhu, Hongxiang Gao, Xiangdong Su, Xian Wu
Article
Polymer Science
Xian Wu, Wei Liu, Li Ren, Chun Zhang
Article
Materials Science, Multidisciplinary
Wei Liu, Xian Wu, Jun Liang, Peng Ding, Yunwei Lv, Chun Zhang
Summary: The study presented a method to design antibacterial HDPE pipes by modifying surface and adding composite antibacterial agents. The newly added antibacterial materials improved the thermal decomposition temperature, crystallinity, and mechanical strength of HDPE composites, and exhibited excellent long-term antibacterial properties against Escherichia coli.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Chemistry, Multidisciplinary
Wei Liu, Xian Wu, Xiaocheng Chen, Shan Liu, Chun Zhang
Summary: The study focused on designing PLA foams with a special crystallization induction method, demonstrating that proper crystallization conditions could enhance the cellular structure for optimized foam performance.
Article
Materials Science, Composites
Wei Liu, Xian Wu, Shan Liu, Xiaoqiong Cheng, Chun Zhang
Summary: In this study, a rough surface induction strategy was developed to prepare poly(lactic acid) (PLA) membranes with improved porous structure and properties. The use of CNT@LDH increased the hydrophilicity and oil absorption capacity of the membranes, while also providing a quick response to pressure. This research provides a potential method for designing high-performance separation membranes.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Wei Liu, Xian Wu, Yang Li, Shan Liu, Yunwei Lv, Chun Zhang
Summary: With the continuous understanding of the pathogenic mechanism of bacteria, there is an increasing demand for antibacterial plastic products. In this study, high-density polyethylene composites were prepared using organic fibers and antibacterial agents, which exhibited excellent mechanical properties and antibacterial effects.
Article
Polymer Science
Wei Liu, Xian Wu, Yangjia Ou, Hao Liu, Chun Zhang
Summary: A simple and feasible method was described to design lightweight, highly electrically conductive, and cost-efficient PLA/CNT foams, using nucleophilic ring-opening reaction of epoxy-based acrylic/styrene copolymer and PLA to induce branched PLA resin. The resulting foam had low density, high crystallinity, and improved conductivity due to enhanced CNT orientation induced by cell growth in the BPLA matrix. This proposed foaming material provides a way for designing and preparing high-performance CNT products.
Article
Biochemistry & Molecular Biology
Yang Li, Dexian Yin, Wei Liu, Hongfu Zhou, Yuxia Zhang, Xiangdong Wang
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Article
Materials Science, Biomaterials
Liu Wei, He Shicheng, Zhou Hongfu
Article
Materials Science, Biomaterials
Wei Liu, Peng Chen, Xiangdong Wang, Fuchun Wang, Yujiao Wu