Fabrication of amphiphobic softwood and hardwood by treatment with non-fluorinated chemicals

Tang, Zhenguan; Xie, Linkun; Hess, Dennis W.; Breedveld, Victor

doi:10.1007/s00226-016-0854-9

Cited by 20 publications

(6 citation statements)

References 41 publications

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“…Specifically, HWE-90 exhibited a WCA of 108°, which means that these films have low wettability. The hydrophobicity of HWE-90 films is a noteworthy achievement, as it is higher than that of ionic liquid-based cotton linter films (WCA = 75°) and comparable to that of silane-coated wood surfaces (WCA ≥ 100°). , The high surface roughness of HWE-90 could have contributed to its hydrophobicity (Figure H,L) . Moreover, it was depleted in hemicellulose while simultaneously enriched in lignin content, which could have ultimately induced hydrophobicity.…”

Section: Resultsmentioning

confidence: 92%

Ionic-liquid-Assisted Fabrication of Lignocellulosic Thin Films with Tunable Hydrophobicity

Rajan

Kim

Elder

et al. 2022

ACS Sustainable Chem. Eng.

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Thin films with enhanced water repellency and mechanical strength can be fabricated from renewable lignocellulosic feedstock as a replacement for petrochemical-derived synthetic polymers, such that it minimizes life cycle impact on the environment and human health. In this study, hybrid poplar wood, either untreated (control) or pretreated with hot water at 160 °C for 20 min (HWE-20), 60 min (HWE-60), and 90 min (HWE-90), was dissolved in 1-ethyl-3-methylimidazolium acetate and regenerated to fabricate thin films. The HWE-90 films were enriched in lignin by 74%, specifically on the surface, which along with hemicellulose depletion imparted hydrophobicity (108° water contact angle) when compared to the control (56°), HWE-20 (77°), and HWE-60 (84°) films. They also exhibited 86% reduced water vapor sorption hysteresis and 75% improved storage modulus compared to the control. Thus, we demonstrate how to tune the lignocellulosic film properties via a combination of hot water pretreatment and ionic liquid dissolution.

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Section: Resultsmentioning

confidence: 92%

Ionic-liquid-Assisted Fabrication of Lignocellulosic Thin Films with Tunable Hydrophobicity

Rajan

Kim

Elder

et al. 2022

ACS Sustainable Chem. Eng.

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“…Several research made comparisons between fluorinated and non-fluorinated materials, and demonstrated that only fluorocarbon presented oil repellency [8,119]. In fact, some studies have proved that on some substrate, though not including textile, such as paper, woods, glass, etc., applying non-fluorinated coating is able to present oleophobicity [120][121][122][123][124]. This can be easily explained in theory, fluorine-free groups also have a very low surface energy, which is lower than most of the oil.…”

Section: Discussionmentioning

confidence: 98%

Designing Non-fluorinated Durable Stain-resistant Textiles

2021

FSST

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Though being highly stain-resistant and durable, recently, the harmful effects of fluorinated chemicals on the environment and organisms have gained people's attention. It has now become necessary to find non-fluorinated alternatives with comparable properties. Current research shows that non-fluorinated materials have achieved excellent hydrophobicity, but oleophobicity or stain-resistance is still difficult to reach. In this review, the chemistry of hydrophobic materials, morphology control of textiles, and the enhancement of durability of coatings are respectively discussed and summarized with examples. The combination of these techniques would help develop better repellency. This review also attempts to elucidate and discuss the necessity to consider textile properties according to end-use requirements, the asymmetric wettability design to increase comfort and the possible directions for future research on designing non-fluorinated durable stain-resistant textiles.

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“…An interesting use of plasmas in wood surface modification is to oxidize its polymeric constituents to increase its surface free energy and wettability. Over the last 5 years, many workers explored this application to increase the interactions between wood and adhesives or coatings [176][177][178][179][180][181][182][183][184][185][186][187]. They found that using reactive carrier gases such as air and O 2 would lead to the creation of polar groups such as carboxyl and carbonyl at the surface of the treated wood, increasing its hydrophilicity and surface free energy.…”

Section: Plasma Modificationmentioning

confidence: 99%

Trends in Chemical Wood Surface Improvements and Modifications: A Review of the Last Five Years

Blanchet

Pepin

2021

Coatings

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Increasing the use of wood in buildings is regarded by many as a key solution to tackle climate change. For this reason, a lot of research is carried out to develop new and innovative wood surface improvements and make wood more appealing through features such as increased durability, fire-retardancy, superhydrophobicity, and self-healing. However, in order to have a positive impact on the society, these surface improvements must be applied in real buildings. In this review, the last five years of research in the domain of wood surface improvements and modifications is first presented by sorting the latest innovations into different trends. Afterward, these trends are correlated to specifications representing different normative, ecologic and economic factors which must be considered when expecting to introduce a wood treatment to the market. With this review, the authors hope to help researchers to take into consideration the different factors influencing whether new innovations can leave the research laboratory or not, and thereby facilitate the introduction of new wood surface treatments in the society.

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Fabrication of amphiphobic softwood and hardwood by treatment with non-fluorinated chemicals

Cited by 20 publications

References 41 publications

Ionic-liquid-Assisted Fabrication of Lignocellulosic Thin Films with Tunable Hydrophobicity

Ionic-liquid-Assisted Fabrication of Lignocellulosic Thin Films with Tunable Hydrophobicity

Designing Non-fluorinated Durable Stain-resistant Textiles

Trends in Chemical Wood Surface Improvements and Modifications: A Review of the Last Five Years

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