Article
Polymer Science
Xue Dong, Qin-Zhuo Zhou, Lei Li, Ying-Cheng Li, Mei-Fang Zhu
Summary: A novel P(AN-co-DMVP) copolymer with excellent thermal stability and flame retardance properties was successfully synthesized, showing a significant increase in oxygen index and a decrease in heat release with the addition of DMVP. The relationship between copolymer structures and flame-retardant performance was systematically investigated using various analytical methods, proposing a comprehensive flame-retardant mechanism involving DMVP in both the gaseous and condensed phases.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Xinjun Wang, Lijun Qian, Juan Li
Summary: The study demonstrated that the mixture of APP/CC-Lys/OMMT can enhance the flame retardancy of EVA, forming a porous char layer with good thermal insulation properties, reducing the heat release during combustion, and delaying the ignition time.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Xiaoqing Qiu, Daqian Wang, Qing Li, Xiaoyue Li, Xiaowei Zhao, Zhiwei Li, Xiaohong Li, Zhijun Zhang
Summary: The study demonstrates a new strategy of using discarded MF foam as solid adsorbents to remove tin ions in wastewater, achieving a high removal rate of up to 99.996%. The products obtained after simple calcination can serve as high-efficiency flame retardants for PVC, significantly reducing heat release rate and smoke production. This approach effectively converts MF foam waste and tin-containing wastewater into valuable flame retardants, promoting environmentally friendly recycling and treatment.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Yao Xu, Jinhao Sun, Lijun Qian, Juan Li
Summary: The research shows that combining DOPO and PDA can significantly enhance the flame retardancy of epoxy resin and reduce the peak heat release rate. The volatilization of DOPO can quench free radicals and stop combustion. While increasing the amount of PDA/DOPO can raise the glass transition temperature, the aggregation of PDA in EP leads to decreased tensile properties of the composite material.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Jiahao Zou, Huajun Duan, Junjun Zhang, Jianfan Cao, Chenhao Zhang, Chao Wan, Huiru Ma
Summary: In this study, a P/N/S-containing heterocyclic halogen-free reactive flame retardant was successfully developed to improve the flame retardancy and heat performance of epoxy resin samples, while maintaining excellent mechanical properties. The introduction of the flame retardant resulted in a slight decrease in curing activity but maintained transparency, with enhanced flame retardancy and reduced smoke and heat release properties observed in the modified samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Carl-Christoph Hoehne, Robert Schmidt, Valeria Berner, Elke Metzsch-Zilligen, Erik Westphal, Rudolf Pfaendner, Christoph Mack
Summary: The paper discusses the challenges in producing PLA bead foams in the transition to a sustainable circular plastic economy in the plastic industry and how to achieve a class E classification for construction products without using flame retardants.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
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
Polymer Science
Huili Shi, Zhiwei Li, Xiaohong Li, Zhijun Zhang
Summary: In this study, Fe and Sn ions were doped into BiOCl to enhance the flame retardancy and smoke suppression of PVC composites. The doping resulted in improved fire resistance, reduced smoke production, and enhanced mechanical properties of the PVC composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Dongsheng Li, Zhiyong Zhang, Siqi Wang, Miaojun Xu, Bin Li
Summary: The introduction of BDEMPP into EP thermosets significantly improves flame retardancy, mechanical performance, and transparency while inhibiting heat and smoke release. BDEMPP exerts flame retardant effects in both gaseous and condensed phases, demonstrating good performance in EP thermosets.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Dan Xiao, Meng-Ting Zheng, Uwe Gohs, Udo Wagenknecht, Brigitte Voit, De-Yi Wang
Summary: This study designed and prepared fire-retarded polymer nanocomposites based on polypropylene, clay, and allylamine polyphosphate. The morphological, thermal, and fire-safety properties of the nanocomposites were investigated using various techniques. The results showed that the addition of clay and AAPP significantly improved the combustion stability and fire safety performance of the nanocomposites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Guojun Cheng, Ziyue Xuan, Zhongfeng Tang, Shen Tian, Feixiang Sha, Guoxin Ding, Xianglong Wan
Summary: The novel flame-retardant intercalation modifier, Melamine quaternary ammonium salt (MQAS), and sodium-based montmorillonite (MMT) were used to prepare the flame-retardant organic montmorillonite (FOSM) and SBR/FOSM composites. The synergistic flame-retardant effects of MQAS and MMT significantly reduced the total heat release and peak heat release rate during combustion, opening up new possibilities for flame-retardant elastomer composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Yinfu Luo, Zongnan Miao, Tong Sun, Huawei Zou, Mei Liang, Shengtai Zhou, Yang Chen
Summary: The synthesis of flame-retardant hard segment (HSFR) successfully improved the flame retardancy of polyurethane foam (PUF), increasing LOI value and compressive strength while decreasing combustion rate. The flame-retardant mechanism of HSFR in both vapor and condensed phases enhances the flame resistance of the foam.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Shan Huang, Lei Wang, Yuchen Li, Chaobo Liang, Junliang Zhang
Summary: In this study, Ti3C2Tx was used as a synergistic agent to prepare Ti3C2Tx/epoxy intumescent fire-retardant coating (TEIFC), enhancing the fire-retardant performance, hardness, and thermal stability of the coating. This work provides a novel strategy for the design and preparation of intumescent fire-retardant coating using MXene, expanding its industrial applications in fire prevention of ancient buildings.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Xiaohan Li, Ke Zhang, Jiateng Huang, Ziyao Zhou, Kaili Xie, Xiaojie Li, Wei Wei
Summary: The article introduces a high-efficiency flame retardant VTZD for epoxy resin and discusses its synthesis method and application in epoxy resin, focusing on its impact on mechanical and flame-retardant properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Joanna Mastalska-Poplawska, Kornelia Kadac, Piotr Izak, Marcin Gierej, Agata Stempkowska, Zuzanna Goral
Summary: The research showed that the graphite/kaolin system can increase the decomposition reaction temperature of epoxy resin by around 30 degrees Celsius, resulting in more thermally resistant, swollen coatings. This indicates that ceramic fire retardants can work successfully with organic components in intumescent protective coatings.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Composites
H. N. Petersen, R. F. Minty, J. L. Thomason, L. Yang, Y. Kusano, P. Brondsted, K. Almdal
COMPOSITE INTERFACES
(2019)
Article
Biochemistry & Molecular Biology
Morten Leth Jepsen, Line Hagner Nielsen, Anja Boisen, Kristoffer Almdal, Martin Dufva
Article
Engineering, Biomedical
Fabio Tentor, Giorgia Siccardi, Pasquale Sacco, Danilo Demarchi, Eleonora Marsich, Kristoffer Almdal, Sanjukta Bose Goswami, Anja Boisen
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2020)
Article
Nanoscience & Nanotechnology
Firoz Babu Kadumudi, Jon Trifol, Mohammadjavad Jahanshahi, Tiberiu-Gabriel Zsurzsan, Mehdi Mehrali, Eva Zeqiraj, Hossein Shaki, Morteza Alehosseini, Carsten Gundlach, Qiang Li, Mingdong Dong, Mohsen Akbari, Arnold Knott, Kristoffer Almdal, Alireza Dolatshahi-Pirouz
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Saif Ullah, Pierrick Anthony Mindykowski, Rolff Ripke Leisted, Sergey Chernyy, Sie Woldum Tordrup, Grunde Jomaas, Kristoffer Almdal
FIRE AND MATERIALS
(2020)
Article
Biochemistry & Molecular Biology
Mikkel Madsen, Peter Westh, Sanaullah Khan, Richard Ipsen, Kristoffer Almdal, Finn L. Aachmann, Birte Svensson
Summary: Alginates were studied for their ability to form complexes with beta-lactoglobulin at different pH levels and varying ratios of M and G residues. The results showed that pH and M content influenced the binding capacity and size of the particles, providing insights for designing alginate-protein particles in acidic environments.
Article
Construction & Building Technology
Berit B. Rasmussen, Kai Wang, Johan G. Karstoft, Soren N. Skov, Morten Kocks, Christina Andersen, Aneta Wierzbicka, Joakim Pagels, Peter B. Pedersen, Marianne Glasius, Merete Bilde
Summary: The study conducted experiments burning five different types of candles in controlled conditions to compare their emissions. Results showed higher particle emissions, mode diameters, and mass concentrations in the initial burning phase compared to the stable phase for most candles. Chemical composition in the emitted particles was similar to that of the candlewicks, with variations between different candles.
Article
Chemistry, Multidisciplinary
Aaron P. Lindsay, Ashish Jayaraman, Austin J. Peterson, Andreas J. Mueller, Steven Weigand, Kristoffer Almdal, Mahesh K. Mahanthappa, Timothy P. Lodge, Frank S. Bates
Summary: The reanalysis of an asymmetric PEP-PDMS diblock co-polymer revealed a rich phase behavior including a dodecagonal quasicrystal, a Frank-Kasper sigma phase, and a body-centered cubic packing. When subjected to large amplitude oscillatory shear below the order-order transition temperature, a twinned BCC phase emerged, followed by a transition to an anisotropic DDQC state upon heating. Surprisingly, no evidence of epitaxy was observed during the sigma-BCC transition, suggesting a shear-induced order-order transition and an apparent BCC-DDQC epitaxy favored by micelle translation-mediated ordering dynamics far below the order-order transition temperature.
Article
Physics, Multidisciplinary
Kell Mortensen, Anine L. Borger, Jacob J. K. Kirkensgaard, Qian Huang, Ole Hassager, Kristoffer Almdal
Summary: This study presents a detailed description of the structural relaxation of a polystyrene star polymer after cessation of high-rate extensional flow, which includes three distinct regimes of relaxation and ends with relaxation via reptation.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Bin Wang, Einstom Engay, Peter R. Stubbe, Saeed Z. Moghaddam, Esben Thormann, Kristoffer Almdal, Aminul Islam, Yi Yang
Summary: In this study, we demonstrate a method for achieving high precision internal mechanical property gradients in 3D printing using tomographic volumetric printing (TVP) technology. By utilizing visible and UV light sources in conjunction with specific chemical reactions, we achieve full 3D stiffness control. Additionally, we identify the role of reactive transport of radical inhibitors in shaping the workpiece and limiting the achievable stiffness contrast range.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Christina Schmidleithner, Rujing Zhang, Nayere Taebnia, Esben K. U. Larsen, Kristoffer Almdal, Niels B. Larsen
Summary: A high-resolution dual-material 3D printing concept is developed, allowing for the production of distinct materials locally based on orthogonal chemical reactions depending on the illumination wavelength. The resulting devices have micrometer-scale precision in tissue modeling.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Suman Basak, Harshvardhan Ajay Khare, Paul J. Kempen, Nazila Kamaly, Kristoffer Almdal
Summary: Atherosclerosis, a leading cause of death worldwide, can be effectively treated using newly developed ROS-scavenging antioxidant nanoparticles. These nanoparticles, synthesized via reversible addition-fragmentation chain-transfer (RAFT) polymerization, act as a superoxide dismutase (SOD) mimetic agent. The nanoparticles are shown to be taken up by macrophages and exhibit cytocompatibility. Additionally, the nanoparticles have been demonstrated to inhibit foam cell formation in macrophages.
NANOSCALE ADVANCES
(2022)
Article
Physics, Multidisciplinary
Anine L. Borger, Qian Huang, Ole Hassager, Jacob J. K. Kirkensgaard, Kristoffer Almdal, Kell Mortensen
PHYSICAL REVIEW RESEARCH
(2020)
Article
Multidisciplinary Sciences
M. Skovgaard, M. Gudik-Sorensen, K. Almdal, A. Ahniyaz
SN APPLIED SCIENCES
(2020)
Article
Biochemistry & Molecular Biology
Suman Basak, Harshvardhan Ajay Khare, Martin Roursgaard, Paul J. Kempen, Jong Hyun Lee, Salime Bazban-Shotorbani, Martin Kraemer, Sergey Chernyy, Thomas L. Andresen, Kristoffer Almdal, Nazila Kamaly
Summary: This study focuses on the initiating mechanism of atherosclerosis and presents the development of therapeutic nanogels using biocompatible PEG cross-linking method. The nanogels release anti-inflammatory and anti-oxidizing enzyme PON-1 to reduce the production of ox-LDL, effectively inhibiting macrophage foam cell and reactive oxygen species formation.