{"title":"冻融法制备透明纤维素纳米晶膜及表征","authors":"Ananya Ghosh, Jindong Wei, Zhongyang Cheng, Zhihua Jiang","doi":"10.1007/s10570-024-06322-9","DOIUrl":null,"url":null,"abstract":"<div><p>The objective of the study was to prepare self-assembled transparent cellulose nanocrystal (CNC) films utilizing freeze–thaw technique. To date, self-assembled transparent CNC solid film can be obtained through chemical doping. Here, an easy alternative route was demonstrated to produce such film without chemical modification. It was found that the freeze–thaw method completely eliminated the chiral nematic structure, resulting in completely transparent films without structural color. Detailed internal structure characterization using SEM, XRD, and UV–Vis spectroscopy coupled with optical property analysis revealed a remarkable improvement in the clarity and sharpness of freeze–thaw based CNC films without compromising transmittance and haze, showing promise of freeze–thaw based CNC films in packaging and coating applications.</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 2","pages":"877 - 886"},"PeriodicalIF":4.8000,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-024-06322-9.pdf","citationCount":"0","resultStr":"{\"title\":\"Preparation and characterization of transparent cellulose nanocrystal film using freeze–thaw technique\",\"authors\":\"Ananya Ghosh, Jindong Wei, Zhongyang Cheng, Zhihua Jiang\",\"doi\":\"10.1007/s10570-024-06322-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The objective of the study was to prepare self-assembled transparent cellulose nanocrystal (CNC) films utilizing freeze–thaw technique. To date, self-assembled transparent CNC solid film can be obtained through chemical doping. Here, an easy alternative route was demonstrated to produce such film without chemical modification. It was found that the freeze–thaw method completely eliminated the chiral nematic structure, resulting in completely transparent films without structural color. Detailed internal structure characterization using SEM, XRD, and UV–Vis spectroscopy coupled with optical property analysis revealed a remarkable improvement in the clarity and sharpness of freeze–thaw based CNC films without compromising transmittance and haze, showing promise of freeze–thaw based CNC films in packaging and coating applications.</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 2\",\"pages\":\"877 - 886\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2024-12-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s10570-024-06322-9.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cellulose\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10570-024-06322-9\",\"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/s10570-024-06322-9","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}
Preparation and characterization of transparent cellulose nanocrystal film using freeze–thaw technique
The objective of the study was to prepare self-assembled transparent cellulose nanocrystal (CNC) films utilizing freeze–thaw technique. To date, self-assembled transparent CNC solid film can be obtained through chemical doping. Here, an easy alternative route was demonstrated to produce such film without chemical modification. It was found that the freeze–thaw method completely eliminated the chiral nematic structure, resulting in completely transparent films without structural color. Detailed internal structure characterization using SEM, XRD, and UV–Vis spectroscopy coupled with optical property analysis revealed a remarkable improvement in the clarity and sharpness of freeze–thaw based CNC films without compromising transmittance and haze, showing promise of freeze–thaw based CNC films in packaging and coating applications.
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.
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