{"title":"纳米纤维素-石墨烯膜强化传热:实验与分子动力学模拟研究","authors":"Xingli Zhang, Liyan Lu, Jiankai Wang","doi":"10.1007/s10570-024-06192-1","DOIUrl":null,"url":null,"abstract":"<div><p>Nanocellulose (NC) as a stable carrier and matrix with high mechanical strength, low thermal expansion, and high electrical resistivity is full of potential to be used in green electronics, energy storage device, and sensors. In this study, a nanocellulose/graphene (NC/G) membrane is designed and successfully prepared in order to modify thermal transport of NC. The experimental results indicate that the NC/G membrane possesses strong interfacial interactions and highly ordered structures, and the heat transfer ability of the composite membrane is enhanced due to the addition of graphene. Molecular dynamics simulations are also used to predict the role of the temperature, covalent bonding and strains on the thermal conductivity of NC/G membrane. The in-plane and cross-plane thermal conductivities of the NC/G membrane can reach to 8.804 W/(m K) and 1.132 W/(m K), respectively, which show obvious characteristics of anisotropy. The the phonon density of states (PDOS) is calculated to further reveal the phonon transport mechanism of NC/G membranes. The results from this study will provide some effective guidence to impove the thermal conductivity of the hybrid organic–inorganic nanocomposites.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 1","pages":"133 - 145"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced heat transfer of nanocellulose–graphene membrane: experiment and molecular dynamics simulation study\",\"authors\":\"Xingli Zhang, Liyan Lu, Jiankai Wang\",\"doi\":\"10.1007/s10570-024-06192-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Nanocellulose (NC) as a stable carrier and matrix with high mechanical strength, low thermal expansion, and high electrical resistivity is full of potential to be used in green electronics, energy storage device, and sensors. In this study, a nanocellulose/graphene (NC/G) membrane is designed and successfully prepared in order to modify thermal transport of NC. The experimental results indicate that the NC/G membrane possesses strong interfacial interactions and highly ordered structures, and the heat transfer ability of the composite membrane is enhanced due to the addition of graphene. Molecular dynamics simulations are also used to predict the role of the temperature, covalent bonding and strains on the thermal conductivity of NC/G membrane. The in-plane and cross-plane thermal conductivities of the NC/G membrane can reach to 8.804 W/(m K) and 1.132 W/(m K), respectively, which show obvious characteristics of anisotropy. The the phonon density of states (PDOS) is calculated to further reveal the phonon transport mechanism of NC/G membranes. The results from this study will provide some effective guidence to impove the thermal conductivity of the hybrid organic–inorganic nanocomposites.</p></div>\",\"PeriodicalId\":511,\"journal\":{\"name\":\"Cellulose\",\"volume\":\"32 1\",\"pages\":\"133 - 145\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2024-11-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cellulose\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10570-024-06192-1\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, PAPER & WOOD\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cellulose","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10570-024-06192-1","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, PAPER & WOOD","Score":null,"Total":0}
Enhanced heat transfer of nanocellulose–graphene membrane: experiment and molecular dynamics simulation study
Nanocellulose (NC) as a stable carrier and matrix with high mechanical strength, low thermal expansion, and high electrical resistivity is full of potential to be used in green electronics, energy storage device, and sensors. In this study, a nanocellulose/graphene (NC/G) membrane is designed and successfully prepared in order to modify thermal transport of NC. The experimental results indicate that the NC/G membrane possesses strong interfacial interactions and highly ordered structures, and the heat transfer ability of the composite membrane is enhanced due to the addition of graphene. Molecular dynamics simulations are also used to predict the role of the temperature, covalent bonding and strains on the thermal conductivity of NC/G membrane. The in-plane and cross-plane thermal conductivities of the NC/G membrane can reach to 8.804 W/(m K) and 1.132 W/(m K), respectively, which show obvious characteristics of anisotropy. The the phonon density of states (PDOS) is calculated to further reveal the phonon transport mechanism of NC/G membranes. The results from this study will provide some effective guidence to impove the thermal conductivity of the hybrid organic–inorganic nanocomposites.
期刊介绍:
Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.