A facile method for fabricating robust cellulose nanocrystal/SiO2 superhydrophobic coatings

Huang, Jingda; Lyu, Shaoyi; Chen, Zhilin; Wang, Siqun; Fu, Feng

doi:10.1016/j.jcis.2018.10.045

Cited by 89 publications

(55 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, surface modification of CNCs must be conducted to improve the compatibility with hydrophobic PHA. In order to solve the issue, a variety of surface functionalization strategies have been applied to CNCs [10,14,18,20,[23][24][25][26][27][28][29][30]. For example, the methylation process decreases the water absorption tendency of CNCs through hydrophilic OH group substitution with hydrophobic methyl, ethyl, or acetyl groups [18,26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in Mechanical Properties of Polyhydroxyalkanoate with Double Silanized Cellulose Nanocrystals Using Different Organosiloxanes

Kim

Jeong

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

Polyhydroxyalkanoate (PHA) is a biodegradable plastic with great potential for tackling plastic waste and marine pollution issues, but its commercial applications have been limited due to its poor processability. In this study, surface-modified cellulose nanocrystals were used to improve the mechanical properties of PHA composites produced via a melt-extrusion process. Double silanization was conducted to obtain hydrophobically treated CNC-based fillers, using tetraethyl orthosilicate (TEOS) and methyltrimethoxysilane (MTMS). The morphology, particle size distributions, and surface characteristics of the silanized CNCs and their compatibility with a PHA polymer matrix differed by the organosiloxane treatment and drying method. It was confirmed that the double silanized CNCs had hydrophobic surface characteristics and narrow particle size distributions, and thereby showed excellent dispersibility in a PHA matrix. Adding hydrophobically treated CNCs to form a PHA composite, the elongation at break of the PHA composites was improved up to 301%, with little reduction of Young’s modulus, compared to pure PHA. Seemingly, the double silanized CNCs added played a similar role to a nucleation agent in the PHA composite. It is expected that such high ductility can improve the mechanical properties of PHA composites, making them more suitable for commercial applications.

show abstract

Section: Introductionmentioning

confidence: 99%

“…For example, the methylation process decreases the water absorption tendency of CNCs through hydrophilic OH group substitution with hydrophobic methyl, ethyl, or acetyl groups [18,26]. The addition of surfactants and grafting may be promising routes for the hydrophobization of CNCs [10,14,[23][24][25][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Changes in Mechanical Properties of Polyhydroxyalkanoate with Double Silanized Cellulose Nanocrystals Using Different Organosiloxanes

Kim

Jeong

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Besides that, the absence of obvious defects indicates that the components of the fibers are compatible with each other well, phase separation does not occur, and spinning solution phase does not break down during the spinning process. F MF/SiO2 and F MF/SiO2/PVA look dim, namely the color darken, which is because nano‐SiO 2 particles make the surface of the fibers rough, 32 and the uneven surfaces scatter more light rays.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and characterization of melamine formaldehyde fibers with enhanced mechanical properties and high fire resistance by dry spinning

Xiong

Chen

Wang

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

High‐performance melamine formaldehyde (MF) fibers are successfully produced by innovatively utilizing dry spinning with high efficiency and low emission. Three ways are adopted to enhance the mechanical performance of MF fiber. First, MF resin is modified by introducing flexible chain segments into MF three‐dimensional network and reducing the network crosslink density. Second, the energy dissipation capacity of the MF fibers is improved through constructing of hydrogen bond networks among modified MF resin, nano‐SiO2, and/or polyvinyl alcohol and forming interpenetrating network structures of modified MF resin and nano‐SiO2. Third, homogeneous and stable spinning solutions without phase separation are prepared, which can reduce interior defects of MF fibers. The chemical changes in the spinning solutions with increasing temperature and the rheology behavior of the solutions are investigated. In addition, the effects of fiber compositions on microstructure, morphology, and the properties of the MF fibers are also systematically studied. The prepared MF fibers possess high fire retardancy (i.e., limiting oxygen index >40%), thermal stability (i.e., Tmax >360°C), and mechanical properties (i.e., tensile strength >2.5 cN/dtex).

show abstract

“…will be transformed into elastic potential energy of the microsized structure. In this work, 3D profile measurement reveals that the average length of the individual microsized structure is ≈32 µm which is much higher than that of the normal hierarchical rough structure for constructing superhydrophobic coatings It is also noting that the coral‐reef‐like structure could greatly improve the flexibility of the microsized structure. Each of the tentacle on the coral‐reef‐like structure could act as an individual cantilever and consequently, every individual coral‐reef‐like structure could be compared to a laminated cantilever beam such as the leaf spring used on vehicles .…”

mentioning

confidence: 99%

“…Many efforts including building micro/nanoscale surface textures with self‐similar manner, designing smart self‐healable/recoverable surface architectures and making the texture either stiffer with ceramics or more complaint with polymers have been done to enhance the mechanical robustness of the artificial superhydrophobic surfaces. According to these criteria, mechanically robust superhydrophobic coatings have been realized through either applying adhesive to strengthen the adhesion of the fluorinated nanosized oxide particles painting or painting and curing multifluorinated epoxy resin on various materials . Generally, it is believed that surface textures made of hydrophobic bulk materials should be avoided since as long as the surface is broken, newly exposed hydrophilic areas will act as water pinning sites .…”

mentioning

confidence: 99%

Bioinspired Mechanically Robust Metal‐Based Water Repellent Surface Enabled by Scalable Construction of a Flexible Coral‐Reef‐Like Architecture

Luo

2019

Small

View full text Add to dashboard Cite

Mechanical robustness is a central concern for moving artificial superhydrophobic surfaces to application practices. It is believed that bulk hydrophilic materials cannot be use to construct micro/nanoarchitectures for superhydrophobicity since abrasion‐induced exposure of hydrophilic surfaces leads to remarkable degradation of water repellency. To address this challenge, the robust mechanical durability of a superhydrophobic surface with metal (hydrophilic) textures, through scalable construction of a flexible coral‐reef‐like hierarchical architecture on various substrates including metals, glasses, and ceramics, is demonstrated. Discontinuous coral‐reef‐like Cu architecture is built by solid‐state spraying commercial electrolytic Cu particles (15–65 µm) at supersonic particle velocities. Subsequent flame oxidation is applied to introduce a porous hard surface oxide layer. Owing to the unique combination of the flexible coral‐reef‐like architecture and self‐similar manner of the fluorinated hard oxide surface layer, the coating surface retains its water repellency with an extremely low roll‐off angle (<2°) after cyclic sand‐paper abrasion, mechanical bending, sand‐grit erosion, knife‐scratching, and heavy loading of simulated acid rain droplets. Strong adhesion to glass, ceramics, and metals up to 34 MPa can be achieved without using adhesive. The results show that the present superhydrophobic coating can have wide outdoor applications for self‐cleaning and corrosion protection of metal parts.

show abstract

A facile method for fabricating robust cellulose nanocrystal/SiO2 superhydrophobic coatings

Cited by 89 publications

References 64 publications

Changes in Mechanical Properties of Polyhydroxyalkanoate with Double Silanized Cellulose Nanocrystals Using Different Organosiloxanes

Changes in Mechanical Properties of Polyhydroxyalkanoate with Double Silanized Cellulose Nanocrystals Using Different Organosiloxanes

Fabrication and characterization of melamine formaldehyde fibers with enhanced mechanical properties and high fire resistance by dry spinning

Bioinspired Mechanically Robust Metal‐Based Water Repellent Surface Enabled by Scalable Construction of a Flexible Coral‐Reef‐Like Architecture

Contact Info

Product

Resources

About