In situ preparation of spindle calcium carbonate-chitosan/poly (vinyl alcohol) anti-biofouling hydrogels inspired by shellfish

• Published in: Journal of industrial and engineering chemistry (Seoul, Korea) Vol. 121; pp. 499 - 509
• Main Authors: Wei, Yanan, Li, Weihua, Liu, Hongfang, Liu, Hongwei
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 25.05.2023; 한국공업화학회
• Subjects: Anti-biofouling; Bio-Inspired; CaCO3-Chitosan/PVA hydrogels; Hydrogels; Mechanical properties; 화학공학; FITC-BSA; Hydrogels; DCE; Mechanical properties; Anti-biofouling; CaCO3-Chitosan/PVA hydrogels; CS; SCC; Bio-Inspired; PVA; PVC; E. coli; SCC/PVA
• ISSN: 1226-086X; 1876-794X
• DOI: 10.1016/j.jiec.2023.02.005

[Display omitted] •Spindle calcium carbonate-chitosan/poly (vinyl alcohol) (SCC/PVA) antifouling hydrogels inspired by Shellfish are prepared.•SCC/PVA hydrogels have a stable hydration layer.•The mechanical properties SCC/PVA hydrogels are enhanced compared to PVA hydrogel.•SCC/PVA hydrogels have a good antibiofouling performance against bacteria and algae. Hydrogels have received intensive interest in the marine environment due to their excellent anti-biofouling properties. In this work, a series of spindle CaCO3-Chitosan/poly (vinyl alcohol) (SCC/PVA) hydrogels were in situ prepared inspired by the good mechanical self-cleaning and properties of seashell. The morphologies, structure and components of the prepared hydrogels were studied by SEM, FTIR spectra, XRD, TGA, and TEM. The anti-biofouling properties of the prepared hydrogels against protein, bacteria and algae were evaluated by ultrahigh-resolution fluorescence microscopy. Results indicated that chitosan can affect the growth process of CaCO3 leading to the formation of a hollow spindle structure of CaCO3. The prepared SCC/PVA hydrogels have excellent underwater superoleophobicity properties. SCC/PVA-3 hydrogel has the best superoleophobicity property with an underwater contact angle of 167.5°. The compressive strength of SCC/PVA-3 hydrogel is 25 MPa, which is attributed to the doping of SCC. Compared to PVA hydrogel, the settlement of the Navicula, Nitzschia Closterium on the surface of SCC/PVA-3 hydrogels sample decreased by approximately 94 % and 88 %, respectively. The SCC/PVA hydrogels have some antibacterial ability against E. coli. SCC/PVA-3 hydrogel can effectively inhibit the adhesion of elegans with a test time of 180 days in the South China Sea.