自愈水凝胶
流变学
化学工程
甘油
粘弹性
材料科学
卡拉胶
溶剂
小角X射线散射
玻璃化转变
果糖
高分子化学
化学
聚合物
有机化学
复合材料
生物化学
物理
光学
散射
工程类
作者
Benoît Caprin,Guadalupe Viñado-Buil,Guillaume Sudre,Xavier Morelle,Fernande Da Cruz‐Boisson,Aurélia Charlot,Étienne Fleury
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2022-11-03
卷期号:10 (45): 14817-14825
被引量:5
标识
DOI:10.1021/acssuschemeng.2c04437
摘要
κ-Carrageenan was combined to a natural low-transition temperature mixture composed of fructose, glycerol, and water in a 1:1:5 molar ratio (FGW) to generate fully biobased physical gels through a simple method. The resulting gels can be easily prepared in various shapes. As for their hydrogel analogues, the rheological characterization of FGW-based samples evidenced thermosensitive gelation, attributed to the formation of aggregated H-bonded helices composed of κ-carrageenan chains. FGW-based gels exhibit a gel–sol transition temperature (Tg/s) higher than the one of hydrogels with recoverable and reversible viscoelastic properties upon successive heating/cooling cycles. SAXS analysis revealed a more extended conformation of chains in FGW that leads to more physical cross-linking junction zones within the materials. Such peculiar spatial internal organization provides a mechanical reinforcement demonstrated by compression tests. In conclusion, the use of the FGW solvent allows for designing κ-carrageenan physical gels with enhanced thermal and mechanical properties.
科研通智能强力驱动
Strongly Powered by AbleSci AI