Cargando…
Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder
Low-temperature cracking and rutting are the most destructive problems of bitumen that hinder the application of high-performance bitumen engineering, which is dependent on its glass transition temperature (T(g)). Through in silico studies, this work has systematically investigated the T(g) of a bit...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10662095/ https://www.ncbi.nlm.nih.gov/pubmed/38024291 http://dx.doi.org/10.1039/d3na00622k |
_version_ | 1785138131978158080 |
---|---|
author | Pang, Yingying Sun, Liangfeng Zhan, Haifei Zheng, Xianglong Zhang, Jiandong Bian, Chengyou Lü, Chaofeng |
author_facet | Pang, Yingying Sun, Liangfeng Zhan, Haifei Zheng, Xianglong Zhang, Jiandong Bian, Chengyou Lü, Chaofeng |
author_sort | Pang, Yingying |
collection | PubMed |
description | Low-temperature cracking and rutting are the most destructive problems of bitumen that hinder the application of high-performance bitumen engineering, which is dependent on its glass transition temperature (T(g)). Through in silico studies, this work has systematically investigated the T(g) of a bituminous binder with the addition of diamond nanothread (DNT) fillers with varying filler content, alignment, distribution, and functional groups. In general, the glass transition phenomenon of the bitumen is determined by the mobility of its constituent molecules. T(g) is found to increase gradually with the increase in the weight percentage of DNT and then decreases when the weight percentage exceeds 5.05 wt%. The enhancement effect on T(g) is weakened when DNTs are distributed vertically or functionalized with functional groups. Specifically, DNT fillers induce inhomogeneity, which promotes the motion of small molecules while hindering the motion of large molecules. The aggregation of DNTs and the molecular environment in the vicinity of DNTs directly affect T(g). In summary, aggregation and adhesion are the dominant mechanisms affecting the mobility of the constituent molecules in the DNT/bitumen system and thus its glass transition temperature. This work provides in-depth insights into the underlying mechanisms for the glass transition of a bituminous binder, which could serve as theoretical guidance for tuning the low-temperature performance of the bituminous binder. |
format | Online Article Text |
id | pubmed-10662095 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-106620952023-10-31 Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder Pang, Yingying Sun, Liangfeng Zhan, Haifei Zheng, Xianglong Zhang, Jiandong Bian, Chengyou Lü, Chaofeng Nanoscale Adv Chemistry Low-temperature cracking and rutting are the most destructive problems of bitumen that hinder the application of high-performance bitumen engineering, which is dependent on its glass transition temperature (T(g)). Through in silico studies, this work has systematically investigated the T(g) of a bituminous binder with the addition of diamond nanothread (DNT) fillers with varying filler content, alignment, distribution, and functional groups. In general, the glass transition phenomenon of the bitumen is determined by the mobility of its constituent molecules. T(g) is found to increase gradually with the increase in the weight percentage of DNT and then decreases when the weight percentage exceeds 5.05 wt%. The enhancement effect on T(g) is weakened when DNTs are distributed vertically or functionalized with functional groups. Specifically, DNT fillers induce inhomogeneity, which promotes the motion of small molecules while hindering the motion of large molecules. The aggregation of DNTs and the molecular environment in the vicinity of DNTs directly affect T(g). In summary, aggregation and adhesion are the dominant mechanisms affecting the mobility of the constituent molecules in the DNT/bitumen system and thus its glass transition temperature. This work provides in-depth insights into the underlying mechanisms for the glass transition of a bituminous binder, which could serve as theoretical guidance for tuning the low-temperature performance of the bituminous binder. RSC 2023-10-31 /pmc/articles/PMC10662095/ /pubmed/38024291 http://dx.doi.org/10.1039/d3na00622k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Pang, Yingying Sun, Liangfeng Zhan, Haifei Zheng, Xianglong Zhang, Jiandong Bian, Chengyou Lü, Chaofeng Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
title | Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
title_full | Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
title_fullStr | Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
title_full_unstemmed | Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
title_short | Assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
title_sort | assessing the impact of ultra-thin diamond nanothreads on the glass transition temperature of a bituminous binder |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10662095/ https://www.ncbi.nlm.nih.gov/pubmed/38024291 http://dx.doi.org/10.1039/d3na00622k |
work_keys_str_mv | AT pangyingying assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder AT sunliangfeng assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder AT zhanhaifei assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder AT zhengxianglong assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder AT zhangjiandong assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder AT bianchengyou assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder AT luchaofeng assessingtheimpactofultrathindiamondnanothreadsontheglasstransitiontemperatureofabituminousbinder |