Self-healing and self-cleaning clear coating

Khan, Ajmir; Huang, Kun; Sarwar, Mohammed G.; Cheng, Krystal; Li, Zhao; Tuhin, Mohammad O.; Rabnawaz, Muhammad

doi:10.1016/j.jcis.2020.05.073

Cited by 39 publications

(21 citation statements)

References 57 publications

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“…However, the intrinsic biodegradability of wood is the most important weakness, which limits a wider end use, and thus the improvement of wood durability is still one of the major challenges [ 3 , 4 ]. This challenge can be tackled by different means, such as thermo-treatments [ 5 , 6 ] or fossil-based and natural wood coatings with protective or biocidal functions [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterizations of Eco-Friendly Organosolv Lignin-Based Polyurethane Coating Films for the Coating Industry

et al. 2022

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Three different formulations of bio-based polyurethane (PU), varying the weight ratio between Organosolv lignin and a commercial isocyanate, were synthesized. The coating formulations were characterized by SEM, pyrolysis-GC/MS, FTIR spectroscopy and FTIR mapping, which confirmed the successful formation of urethane bonds between commercial isocyanate and hydroxyl groups deriving from lignin. The coatings were applied on beech wood samples to measure color and contact angles, and eventually FTIR mapping of the coated wood samples was performed. FTIR mapping is an interesting tool to monitor the distribution of PU chemical bonds on the coating surface and to evaluate the homogeneity of the applied coating films. Increasing the lignin content of the PU coatings results in more red-yellow and darker tones, while the commercial PU coating is transparent. For a higher lignin concentration, the solid content as well as the weight gain of the applied coatings increase. A higher percentage of lignin in the prepared PU formulations leads to superficial cracks and therefore higher coating permeability compared to the commercial PU, but the prepared lignin-based PU coating still makes a raw wood surface significantly more hydrophobic. Apparently, additives such as film-formers with low surface tension to counteract cracks’ formation are necessary to improve the performance of lignin-based PU coatings.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterizations of Eco-Friendly Organosolv Lignin-Based Polyurethane Coating Films for the Coating Industry

et al. 2022

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“…By virtue of their outstanding mechanical properties, selfhealing performance, resilience and biocompatibility, 1,2 polyurethane elastomers find extensive applications in areas such as damping materials, [3][4][5] adhesives, 6,7 self-healing coatings, [8][9][10] flexible electronics [11][12][13] and 3D printing. 14,15 PU elastomers can be classified into two categories: 16 thermoplastic and thermoset PU elastomers.…”

Section: Introductionmentioning

confidence: 99%

Mechanically robust, creep-resistant, intrinsic antibacterial and reprocessable dynamic polyurethane networks based on azine moieties

Han

Zhou

Bai

et al. 2022

Mater. Chem. Front.

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“…Scheme 5 represents the general mechanism of the dynamic bond exchange that takes place in urea systems [ 66 , 67 , 68 ]. Zinc catalysts increase the dissociation of urea via the formation of oxygen-bound zinc complexes.…”

Section: Introductionmentioning

confidence: 99%

Covalent Adaptable Network and Self-Healing Materials: Current Trends and Future Prospects in Sustainability

2020

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This work estimates that if the growth of polymer production continues at its current rate of 5% each year, the current annual production of 395 million tons of plastic will exceed 1000 million tons by 2039. Only 9% of the plastics that are currently produced are recycled while most of these materials end up in landfills or leak into oceans, thus creating severe environmental challenges. Covalent adaptable networks (CANs) materials can play a significant role in reducing the burden posed by plastics materials on the environment because CANs are reusable and recyclable. This review is focused on recent research related to CANs of polycarbonates, polyesters, polyamides, polyurethanes, and polyurea. In particular, trends in self-healing CANs systems, the market value of these materials, as well as mechanistic insights regarding polycarbonates, polyesters, polyamides, polyurethanes, and polyurea are highlighted in this review. Finally, the challenges and outlook for CANs are described herein.

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Self-healing and self-cleaning clear coating

Cited by 39 publications

References 57 publications

Synthesis and Characterizations of Eco-Friendly Organosolv Lignin-Based Polyurethane Coating Films for the Coating Industry

Synthesis and Characterizations of Eco-Friendly Organosolv Lignin-Based Polyurethane Coating Films for the Coating Industry

Mechanically robust, creep-resistant, intrinsic antibacterial and reprocessable dynamic polyurethane networks based on azine moieties

Covalent Adaptable Network and Self-Healing Materials: Current Trends and Future Prospects in Sustainability

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