Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Polyhexamethylene adipamide (PA66), a prominent engineering thermoplastic and chemical fiber material, plays a crucial role in industrial applications and daily life. However, its inherent flammability accompanied by substantial heat release during combustion presents significant fire safety hazards. To address this limitation, we developed a reactive flame-retardant modification strategy using 4-formylbenzeneboronic acid (FBA) through simple melt blending with PA66. It is revealed that incorporating 4 wt % FBA effectively enhanced the flame retardancy, achieving a limiting oxygen index (LOI) of 28%. Notably, this formulation demonstrated a 49.9% reduction in peak heat release rate (pHRR) and an 8.3% decrease in total heat release (THR) compared with pristine PA66. Mechanistic investigations indicated that FBA primarily functions via condensed-phase flame retardation. Specifically, FBA facilitates the formation of a compact carbonaceous char with improved structural regularity and graphitization degree. This enhanced char layer architecture effectively impedes heat and oxygen transfer while exhibiting superior thermal shielding capability and structural stability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12268427 | PMC |
| http://dx.doi.org/10.1021/acsomega.5c04482 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
HO and CO Sorption in Ion-Exchange Sorbents: Distinct Interactions in Amine Versus Quaternary Ammonium Materials.
ACS Appl Mater Interfaces
September 2025
The Steve Sanghi College of Engineering, Mechanical Engineering, Northern Arizona University, Flagstaff, Arizona 86011, United States.
This study investigates the HO and CO sorption behavior of two chemically distinct polystyrene-divinylbenzene-based ion exchange sorbents: a primary amine and a permanently charged strong base quaternary ammonium (QA) group with (bi)carbonate counter anions. We compare their distinct interactions with HO and CO through simultaneous thermal gravimetric, calorimetric, gas analysis, and molecular modeling approaches to evaluate their performance for dilute CO separations like direct air capture. Thermal and hybrid (heat + low-temperature hydration) desorption experiments demonstrate that the QA-based sorbent binds both water and CO more strongly than the amine counterparts but undergoes degradation at moderate temperatures, limiting its compatibility with thermal swing regeneration.
View Article and Find Full Text PDFExploring the potential of microwave processing for improved microbial safety and nutritional quality of liquid milk.
Food Res Int
November 2025
State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; College of Food Science, Southwest University, Chongqing 400715, China. Electronic address:
This study systematically compared the effects of microwave (MW) and conventional thermal (CT) processing on microbial inactivation, enzyme activity, protein retention, and nutritional characteristics of bovine milk under pasteurization (70 °C for 20 s) and ultra-high temperature (UHT) sterilization conditions. Both technologies achieved effective microbial reduction (>4 log CFU/mL) for Escherichia coli, Staphylococcus aureus, and Salmonella spp., complying with EU and FDA safety standards.
View Article and Find Full Text PDFComparative genomic insights into adaptation, selection signatures, and population dynamics in indigenous Indian sheep and foreign breeds.
Front Genet
August 2025
College of Poultry Production and Management, TANUVAS, Hosur, India.
Background: India's indigenous sheep breeds have evolved under extreme and diverse agro-ecological pressures, yet the genomic basis of their resilience and local adaptation remains poorly understood.
Method: This study combines genomic inbreeding estimates, runs of homozygosity (ROH), population structure analyses, and composite selection scans to investigate three native Indian breeds-Changthangi, Deccani, and Garole-within a panel of nine breeds that also includes populations from Africa (Ethiopian Menz), East and South Asia (Tibetan, Chinese Merino, Bangladesh Garole, Bangladesh East), and Europe (Suffolk).
Results: ROH and heterozygosity estimates revealed strong contrasts: Bangladesh East sheep exhibited high genomic inbreeding (F≈14.
Recent Advances of Photothermal Materials for Biomedical Applications.
ACS Omega
September 2025
Sinopec Key Laboratory of Research and Application of Medical and Hygienic Materials Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chao Yang District, Beijing 100013, P. R. China.
With the rapid development of precision medicine and the continuous evolution of smart wearable devices, photothermal materials (PTMs) are experiencing a tremendous opportunity for growth. PTMs can efficiently convert light energy into heat to achieve localized thermal therapy for specific cells or tissues, offering advantages of minimal invasiveness, high selectivity, and precise targeting. Furthermore, PTMs can serve as molecular imaging probes and smart drug carriers, integrating multiple functions such as bioimaging and drug delivery to realize the visualization and controlled release of therapeutic processes.
View Article and Find Full Text PDFQualitative Analysis of Ventilation Position and Dimension Effects on Compartment Fire Dynamics: An Experimental and Numerical Approach.
Fire Technol
May 2025
Center for Fire Safety Engineering, School of Engineering, University of Edinburgh, Edinburgh, EH9 3JL UK.
Unlabelled: Informal settlements, where over 1 billion people live globally, are extremely vulnerable to fire events. Thermally thin steel-clad timber-framed homes found in South African informal settlements are a prime example of this. In this paper, we explore, through six full-scale laboratory experiments and modelling, the influence of opening locations, areas, and aspect ratios, on the fire dynamics of thermally thin and leaky compartments.
View Article and Find Full Text PDF