{"title":"Cellulose nanocrystals/polydimethylsiloxane hybrid membranes for air dehydration at elevated temperatures","authors":"Nasim Alikhani, Ling Li, Jinwu Wang","doi":"10.1007/s10570-025-06707-4","DOIUrl":null,"url":null,"abstract":"<div><p>This study presents a cellulose nanocrystals (CNCs)/polydimethylsiloxane (PDMS) composite membrane for enhanced water vapor separation at elevated temperatures. CNCs/PDMS membranes were fabricated via a casting method and characterized for their permeability, selectivity, and thermal stability. Water vapor permeability was measured using a Payne diffusion cell coupled with a Dynamic Vapor Sorption instrument, while nitrogen gas permeability was determined with a gas permeation cell. The results indicate that incorporating 2% CNCs increased water vapor permeability by 24.8%, 30.9%, and 11.2% at 25 °C, 50 °C, and 80 °C, respectively, with a slight improvement in selectivity (up to 3.1%). However, increasing CNC concentration beyond 2% led to slight reductions in permeability, attributed to nanoparticle aggregation. The thermal dimensional stability of the optimized membranes improved, as evidenced by an 8.9% reduction in the coefficient of thermal expansion. These findings suggest that CNC-reinforced PDMS membranes could be promising candidates for energy-efficient air dehydration applications, though further studies are needed to optimize CNC dispersion and long-term performance under industrial conditions.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 14","pages":"8221 - 8237"},"PeriodicalIF":4.8000,"publicationDate":"2025-08-20","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/s10570-025-06707-4","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}
引用次数: 0
Abstract
This study presents a cellulose nanocrystals (CNCs)/polydimethylsiloxane (PDMS) composite membrane for enhanced water vapor separation at elevated temperatures. CNCs/PDMS membranes were fabricated via a casting method and characterized for their permeability, selectivity, and thermal stability. Water vapor permeability was measured using a Payne diffusion cell coupled with a Dynamic Vapor Sorption instrument, while nitrogen gas permeability was determined with a gas permeation cell. The results indicate that incorporating 2% CNCs increased water vapor permeability by 24.8%, 30.9%, and 11.2% at 25 °C, 50 °C, and 80 °C, respectively, with a slight improvement in selectivity (up to 3.1%). However, increasing CNC concentration beyond 2% led to slight reductions in permeability, attributed to nanoparticle aggregation. The thermal dimensional stability of the optimized membranes improved, as evidenced by an 8.9% reduction in the coefficient of thermal expansion. These findings suggest that CNC-reinforced PDMS membranes could be promising candidates for energy-efficient air dehydration applications, though further studies are needed to optimize CNC dispersion and long-term performance under industrial conditions.
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.