Pressure sensitive adhesives based on interpolymer complexes

Feldstein, Mikhail M.; Dormidontova, Elena E.; Khokhlov, Alexei R.

doi:10.1016/j.progpolymsci.2014.10.006

Cited by 75 publications

(44 citation statements)

References 291 publications

(559 reference statements)

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“…However, since H‐bonding remains an important factor in the adhesion of several marine organisms (see Section ), it would be interesting to have a closer look at the performance of such synthetic glues in an aqueous environment. Multiple examples that will be reviewed in this section aimed at using hydrogen bonding for preparing PSAs: materials that tightly bind to substrates under application of light pressures within a short amount of time . Generally, these are rubber‐like materials, i.e., materials that have a low glass transition and, above that, are viscoelastic.…”

Section: Adhesives Based On Hydrogen Bondingmentioning

confidence: 99%

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Bioinspired Underwater Adhesives by Using the Supramolecular Toolbox

et al. 2018

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several excellent reviews. [9][10][11][12] Recently, it was emphasized by Waite that catechol moieties alone are insufficient to ensure proper underwater adhesion and that the performance is a complex interplay between DOPA and its local environment. [13] Therefore, attention is shifted to include other (noncovalent) interactions used in these natural glues, and much progress has been made in understanding both their performance and delivery process. [14] In this review, we take the sandcastle worm and mussel as a basis for inspiration. We discuss (noncovalent) interactions found in these natural adhesive systems and extend our discussion to additional supramolecular moieties that can be used to control the adhesive and cohesive performance of synthetically designed adhesives. In Section 2, we examine the natural systems and identify the versatile supramolecular interactions used in such protein-based adhesives. These include electrostatic interactions, hydrogen bonding, hydrophobic forces, π-π interactions, metal coordination, cation-π complexation, and dynamic covalent linkages. The use of these interactions in synthetic adhesive systems is explored in the subsequent sections. Section 3 is devoted to the different interactions that catechols (the functional group of DOPA) display to bond to a submerged substrate or to provide cohesive properties to the adhesive. Despite the fact that catechols have already been the topic of many excellent reviews, [9,13,17] we believe that catechols play a pivotal role in both the sandcastle worm and the mussel adhesive systems and, therefore, should not be omitted from this review. In Section 4, we discuss the use of electrostatic interactions in protein-based and synthetic adhesive formulations for wet conditions. These interactions can be tailored to a wide distribution of bond strengths and thus can be tuned to change multi ple mechanical properties, which is essential for design of an adhesive. Besides the effect on the adhesive and cohesive properties, we highlight work where electrostatic interactions cause liquid-liquid phase separation in aqueous polymer solutions. The resulting (complex) coacervate is a concentrated, liquid, yet water-insoluble phase of the adhesive material, which can act as a powerful delivery tool for underwater adhesives. Hydrogen bonding in adhesives is explored in Section 5. The use of hydrogen bonding to adjust the viscoelastic properties of adhesives has been identified decades, ago, and hydrogen bonding moieties are commonly used in pressure sensitive adhesives (PSAs). However, besides simple, single hydrogen bonding motifs, many interesting alternative Nature has developed protein-based adhesives whose underwater performance has attracted much research attention over the last few decades. The adhesive proteins are rich in catechols combined with amphiphilic and ionic features. This combination of features constitutes a supramolecular toolbox, to provide stimuli-responsive processing of the adhesive, to secure strong adhesion to a variety of...

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Section: Adhesives Based On Hydrogen Bondingmentioning

confidence: 99%

“…For PSAs, the material should exhibit fluid‐like properties on contact (good wetting of substrate), while it should have a high cohesive strength (solid‐like) to resist debonding . These demands conflict, and are therefore difficult to obtain when using a single type of material.…”

Section: Adhesives Based On Hydrogen Bondingmentioning

confidence: 99%

Bioinspired Underwater Adhesives by Using the Supramolecular Toolbox

et al. 2018

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“…On the other hand, PSAs are very low modulus elastomers which deform easily under small pressures, and this characteristic allows them to adhere to wet surfaces . PSAs are widely used in self‐adhesive labels, tapes, protective films, and dermal dosage systems for pharmaceutical applications, biomedical electrodes, automotive part assemblies, toys, electronic circuits, and keyboards …”

Section: Introductionmentioning

confidence: 99%

Silicone‐Based Adhesives with Highly Tunable Adhesion Force for Skin‐Contact Applications

Lee

Ryu

Baek

et al. 2017

Adv Healthcare Materials

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A fundamental approach to fabricating silicone-based adhesives with highly tunable adhesion force for the skin-contact applications is presented. Liquid blends consisting of vinyl-multifunctional polydimethylsiloxane (V-PDMS), hydride-terminated PDMS (H-PDMS), and a tackifier composed of a silanol-terminated PDMS/MQ resin mixture and the MQ resin are used as the adhesive materials. The peel adhesion force of addition-cured adhesives on the skin is increased by increasing the H-PDMS molecular weights and the tackifier content, and decreasing the H-PDMS/V-PDMS ratio. There is an inverse relationship between the adhesion force and the Young's modulus. The low-modulus adhesives with a low H-PDMS/V-PDMS ratio exhibit enhanced adhesion properties. The low-modulus adhesives with the high MQ resin content show significantly enhanced adhesion properties. These adhesives exhibit a wide range of modulus (2-499 kPa), and their adhesion force (0.04-5.38 N) is superior to commercially available soft silicone adhesives (0.82-2.79 N). The strong adhesives (>≈2 N) provide sufficient adhesion for fixing the flexible electrocardiogram (ECG) device to the skin in most daily activity. The human ECG signals are successfully recorded in real time. These results suggest that the silicone-based adhesives should be useful as an atraumatic adhesive for the skin-contact applications.

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“…Depending on the application, thermoplastic hot melt adhesives or pressure‐sensitive adhesives are employed, and several schemes that allow for debonding have been developed . Hot‐melt adhesives display stronger bonds than pressure sensitive adhesives, but their high melt viscosity renders processing of hot‐melt adhesives intricate, leads to long debonding times, and makes the removal of the adhesive after debonding difficult …”

Section: Introductionmentioning

confidence: 99%

Bonding and Debonding on Demand with Temperature and Light Responsive Supramolecular Polymers

Ferahian

Hohl

Weder

et al. 2019

Macro Materials & Eng

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Due to their low melt viscosity, competitive adhesive properties, and the stimuli‐responsive nature of supramolecular interactions, various supramolecular polymers have recently been investigated as adhesives with on‐demand (de)bonding capability. The adhesive properties of a series of hydrogen‐bonded supramolecular polymer networks based on a telechelic poly(ethylene‐co‐butylene) (PEB) terminated with isophthalic acid (IPA) groups and a series of bifunctional pyridines (Py) are reported herein. These supramolecular polymers microphase segregate into an IPA‐Py rich hard phase and an amorphous low‐glass‐transition PEB phase, and their properties depend on the nature of the pyridine‐carrying monomer. Rheological measurements show that the polymers disassemble into low‐viscosity melts when heated above the melting or glass transition temperature of the hard phase. Lap joints bonded with the polymers display a shear strength of up to 1.3 MPa, and debonding is possible in less than 10 s upon heating or exposure to UV–light; to enable rapid light‐induced (de)bonding, a light–heat converter is introduced. Cyclic bonding/debonding experiments reveal that the shear strength remains unchanged over five cycles and demonstrate that the process is very robust.

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Pressure sensitive adhesives based on interpolymer complexes

Cited by 75 publications

References 291 publications

Bioinspired Underwater Adhesives by Using the Supramolecular Toolbox

Bioinspired Underwater Adhesives by Using the Supramolecular Toolbox

Silicone‐Based Adhesives with Highly Tunable Adhesion Force for Skin‐Contact Applications

Bonding and Debonding on Demand with Temperature and Light Responsive Supramolecular Polymers

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