Amphiphilically modified self-stratified siloxane-glycidyl carbamate coatings for anti-icing applications

Rahimi, Alireza; Murphy, Morgan; Upadhyay, Vinod; Faiyaz, K; Battocchi, Dante

doi:10.1007/s11998-020-00402-8

Cited by 10 publications

(10 citation statements)

References 56 publications

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“…For SAC-based coatings, as similarly suggested by Rahimi et al, 33,52 the bright regions correspond to the soft/hydrophobic PDMS domains while the dark regions referred to the hard/ hydrophilic PMETAC segments that tended to attach to the hydrophilic substrate. In AFM phase images (Figure S8a−d), it is clearly shown that the PMETAC domains contrasted with the PDMS matrix.…”

Section: Fabrication and Surface Characterizations Of The Pils-based ...mentioning

confidence: 80%

“…A relative increase in the intensity of the PIL peaks with an increase in PIL content indicated successful incorporation into the PDMS-based RAFT macroinitiator. The characteristic signals of the PDMS backbone appeared at 1260, 1020–1085, and 795 cm –1 , which are attributed to the stretching vibrations of SiCH 3 and SiOSi and the bending vibration of SiO, respectively. ,,− For SAC-based coatings (Figure a), the transmittance peak at 952 cm –1 corresponded to the quaternary CH vibration and a strong broadband at 3400 cm –1 belonged to the OH stretching vibration of the absorbed water. In addition, the peaks at 1725 and 1480 cm –1 were assigned to the stretching vibration of CO and bending vibration of CH 2 , respectively .…”

Section: Resultsmentioning

confidence: 99%

“…In addition, (super)hydrophilic hydrated coatings are prone to overswelling because of the rapid absorption of water. An improvement in this field has been recently reported by the development of amphiphilic hydrated coatings in which both hydrophilic and hydrophobic segments affect the dispersion of the water molecules and anti-icing mechanism. − …”

Section: Introductionmentioning

confidence: 99%

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Reduced Ice Adhesion Using Amphiphilic Poly(Ionic Liquid)-Based Surfaces

Mossayebi

Jafari

Gurr

et al. 2023

ACS Appl. Mater. Interfaces

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Ice build-up on solid surfaces causes significant economic losses for a range of industries. One solution to this problem is the development of coatings with low ice adhesion strength. Amphiphilic poly(ionic liquid) (PIL)-based surfaces have been recently reported for antifogging/antifrosting applications. However, they have possible anti-icing properties through lowering the ice adhesion strength that have yet to be reported. Herein, we designed well-defined triblock copolymers composed of a polydimethylsiloxane component coupled with PIL segments of poly ([2 (methacryloyloxy)ethyl] trimethylammonium chloride) (PMETAC), which were subsequently UV-cured with an oligo-(ethylene glycol) dimethacrylate (OEGDMA) cross-linker. The structure−property relationships of the resultant semi-interpenetrating polymer networks (SIPNs) were investigated by varying the counterion (i.e., trimethylammonium bis-(trifluoromethanesulfonyl)imide (TFSI − )) and the content of the PIL segments and cross-linker. An ice adhesion strength as low as 13.3 ± 8.6 kPa was observed for the coating containing 12.5 wt % of PMETAC segment and 5 wt % of OEGDMA, which is one of the lowest values reported so far for the amphiphilic coatings. Characterization of the coatings in terms of surface features, wettability, and hydration states have enabled the elucidation of different deicing mechanisms. Self-lubrication due to the existence of nonfreezable bound water led to the obtained low ice adhesion strength. This work offers a new approach for the exploration of PILbased icephobic coatings for practical applications.

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Section: Fabrication and Surface Characterizations Of The Pils-based ...mentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reduced Ice Adhesion Using Amphiphilic Poly(Ionic Liquid)-Based Surfaces

Mossayebi

Jafari

Gurr

et al. 2023

ACS Appl. Mater. Interfaces

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“…The same general chemistry has been utilized more recently in dirt resistant coatings [ 93 ]. Release coatings, including ice-phobic coatings, have been generated from carbinol-terminated siloxane macromers by reaction with isocyanate and epoxy functional prepolymers to form amphiphilic, self-stratified thin films [ 152 ]. A reduction of marine biofouling was observed when aminopropyl-terminated macromers were incorporated into isophorone diiosocyanate-derived urethanes, with low molecular weight macromers (1000 Daltons) providing more favorable results than high molecular weight macromers [ 81 ].…”

Section: Applicationsmentioning

confidence: 99%

Applications of Hybrid Polymers Generated from Living Anionic Ring Opening Polymerization

2021

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Increasingly precise control of polymer architectures generated by “Living” Anionic Ring-Opening Polymerization (Living AROP) is leading to a broad range of commercial advanced material applications, particularly in the area of siloxane macromers. While academic reports on such materials remain sparse, a significant portion of the global population interacts with them on a daily basis—in applications including medical devices, microelectronics, food packaging, synthetic leather, release coatings, and pigment dispersions. The primary driver of this increased utilization of siloxane macromers is their ability to incorporate the properties of silicones into organic structures in a balanced manner. Compared to organic polymers, the differentiating properties of silicones—low Tg, hydrophobicity, low surface energy, and high free molal space—logically lend themselves to applications in which low modulus, release, permeability to oxygen and moisture, and tactile interaction are desired. However, their mechanical, structural and processing properties have until recently precluded practical applications. This review presents applications of “Living” AROP derived polymers from the perspective of historical technology development. Applications in which products are produced on a commercial scale—defined as not only offered for sale, but sold on a recurrent basis—are emphasized. Hybrid polymers with intriguing nanoscale morphology and potential applications in photoresist, microcontact printing, biomimetic soft materials, and liquid crystals are also discussed. Previously unreported work by the authors is provided in the context of this review.

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“…In this work, our goal was to carry out some preliminary experiments in this hitherto unexplored area to determine if there is an amount of amphiphilicity that results in desirable FR performance, hereafter referred to as the critical amphiphilic concentration (CAC). Besides, we envisioned, if illustrated true, this concept will be beneficial to other fields and applications where amphiphilicity has been investigated as a promising path such as medical devices − or anti-icing surfaces. − Therefore, to address this amphiphilicity question and limit the number of variables in this study, we synthesized a novel amphiphilic additive based on PDMS and PEG, and incorporated it in increasing amounts in a conventional polyurethane (PU) coating system, assessing the point where the PU system demonstrated the behavior of a FR PU system. We chose a simple PU system as the matrix rather than a highly hydrophobic matrix (e.g., silicone elastomer) so that the effect of the amphiphilic additive could be understood somewhat independently of the matrix polymer.…”

Section: Introductionmentioning

confidence: 99%

Critical Amphiphilic Concentration: Effect of the Extent of Amphiphilicity on Marine Fouling-Release Performance

et al. 2021

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Amphiphilic surfaces, containing both hydrophilic and hydrophobic domains, offer desirable performance for many applications such as marine coatings or anti-icing purposes. This work explores the effect of the concentration of amphiphilic moieties on converting a polyurethane (PU) system to a coating having fouling-release properties. A novel amphiphilic compound is synthesized and added at increasing amounts to a PU system, where the amount of the additive is the only variable in the study. The additive-modified surfaces are characterized by a variety of techniques including ATR-FTIR, XPS, contact angle measurements, and AFM. Surface characterizations indicate the presence of amphiphilic domains on the surface due to the introduction of the selfstratifying amphiphilic additive. The fouling-release properties of the surfaces are assessed with three biological assays using Ulva linza, Cellulophaga lytica, and Navicula Incerta as the test organisms. A change in the fouling-release performance is observed and plateaued once a certain amount of amphiphilicity is attained in the coating system, which we call the critical amphiphilic concentration (CAC).

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Amphiphilically modified self-stratified siloxane-glycidyl carbamate coatings for anti-icing applications

Cited by 10 publications

References 56 publications

Reduced Ice Adhesion Using Amphiphilic Poly(Ionic Liquid)-Based Surfaces

Reduced Ice Adhesion Using Amphiphilic Poly(Ionic Liquid)-Based Surfaces

Applications of Hybrid Polymers Generated from Living Anionic Ring Opening Polymerization

Critical Amphiphilic Concentration: Effect of the Extent of Amphiphilicity on Marine Fouling-Release Performance

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