Enhancing the Properties of Latex-Based Coatings with Carboxylated Cellulose Nanocrystals

IF 5.4 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Biomacromolecules Pub Date : 2025-01-13 DOI:10.1021/acs.biomac.4c01279

Carolina Ordoñez , Marc A. Dubé , Emily D. Cranston , Marianna Kontopoulou , Timothy Morse , Gary A. Deeter , Pascale Champagne , Michael F. Cunningham

{"title":"Enhancing the Properties of Latex-Based Coatings with Carboxylated Cellulose Nanocrystals","authors":"Carolina Ordoñez , Marc A. Dubé , Emily D. Cranston , Marianna Kontopoulou , Timothy Morse , Gary A. Deeter , Pascale Champagne , Michael F. Cunningham","doi":"10.1021/acs.biomac.4c01279","DOIUrl":null,"url":null,"abstract":"<div><div>Latex-based nanocomposites containing carboxylated cellulose nanocrystals (cCNCs) were synthesized via in situ seeded semibatch emulsion polymerization. Inspired by nature’s use of CNCs to enhance rigidity and mechanical strength in cellulosic materials, we explored similar principles to improve the properties of acrylate water-based coatings. The cCNCs, loaded at 0.3–1.0 wt %, were added 1 h after pre-emulsion feeding began, addressing sensitivity to ionic strength and enabling stable final latexes. Careful control of the polymerization process maintained consistent particle sizes across formulations, allowing for mechanical property comparisons. Films from these latexes were evaluated through rheological and water sensitivity tests. With 1.0 wt % cCNC, significant increases in viscosity, shear-thinning behavior, stiffness, and elastic modulus were observed. Additionally, cCNCs reduced water and moisture absorption without affecting the whitening resistance. These findings demonstrate the enhanced properties of in situ cCNC latex nanocomposites, broadening their potential for industrial applications.</div></div><div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (91KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":30,"journal":{"name":"Biomacromolecules","volume":"26 1","pages":"Pages 480-489"},"PeriodicalIF":5.4000,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomacromolecules","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S1525779724006706","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Latex-based nanocomposites containing carboxylated cellulose nanocrystals (cCNCs) were synthesized via in situ seeded semibatch emulsion polymerization. Inspired by nature’s use of CNCs to enhance rigidity and mechanical strength in cellulosic materials, we explored similar principles to improve the properties of acrylate water-based coatings. The cCNCs, loaded at 0.3–1.0 wt %, were added 1 h after pre-emulsion feeding began, addressing sensitivity to ionic strength and enabling stable final latexes. Careful control of the polymerization process maintained consistent particle sizes across formulations, allowing for mechanical property comparisons. Films from these latexes were evaluated through rheological and water sensitivity tests. With 1.0 wt % cCNC, significant increases in viscosity, shear-thinning behavior, stiffness, and elastic modulus were observed. Additionally, cCNCs reduced water and moisture absorption without affecting the whitening resistance. These findings demonstrate the enhanced properties of in situ cCNC latex nanocomposites, broadening their potential for industrial applications.

Download: Download high-res image (91KB)
Download: Download full-size image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

羧化纤维素纳米晶增强乳液基涂料性能的研究。

采用原位种子半间歇乳液聚合法制备了羧化纤维素纳米晶乳液基复合材料。受大自然使用cnc来提高纤维素材料的刚性和机械强度的启发，我们探索了类似的原理来改善丙烯酸酯水性涂料的性能。在预乳液加料开始1小时后加入重量为0.3-1.0 wt %的ccnc，解决了对离子强度的敏感性，并使最终乳液稳定。仔细控制聚合过程保持一致的粒径跨越配方，允许机械性能的比较。通过流变学和水敏试验对这些乳胶的薄膜进行了评价。当cCNC质量分数为1.0 wt %时，观察到粘度、剪切变薄行为、刚度和弹性模量显著增加。此外，ccnc减少了水和吸湿，而不影响抗白性。这些发现证明了原位cCNC乳胶纳米复合材料的增强性能，扩大了它们的工业应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.