Nano- and bulk-tack adhesive properties of stimuli-responsive, fullerene–polymer blends, containing polystyrene-block-polybutadiene-block-polystyrene and polystyrene-block-polyisoprene-block-polystyrene rubber-based adhesives

Phillips, J. Paige; Deng, Xiao; Stephen, Ryan R.; Fortenberry, Erin L.; Todd, Meredith L.; McClusky, D. Michelle; Stevenson, Steven; Misra, Rahul; Morgan, Sarah E.; Long, Timothy Edward

doi:10.1016/j.polymer.2007.08.050

Cited by 43 publications

(28 citation statements)

References 19 publications

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“…34,49 Both viscoelasticity and the wetting of the adherent by the adhesive are particularly important during the bond formation, 35 and tack is generally observed to be dependent on surface roughness and increase with contact time, contact force, and separation rate, as it has been demonstrated in the results by Zosel 38 and Hui et al 36 Tack is associated with the glass transition of the adhesive and is related to the corresponding compliance just above the glass-transition temperature (T g ) range, which itself is determined by the entanglement network of the polymer. 50,51 The T g parameter is the temperature below which the physical properties of amorphous materials, such as polymers, vary in a manner similar to those of a solid phase (glassy state), and above which amorphous materials behave like liquids (rubbery state). Above T g , the secondary, noncovalent bonds between the polymer chains become weak in comparison to thermal motion and the polymer becomes rubbery and capable of elastic or plastic deformation without fracture.…”

Section: Tackiness and The Work Of Adhesion Of Polymer Solutionsmentioning

confidence: 99%

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO₂, 1. Review and Agglomeration Regime Maps

Hede

Bach

Jensen

2009

Ind. Eng. Chem. Res.

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This paper, and two associated papers Bach, P. Ind. Eng. Chem. Res. 2009, 48, 1905 and 1914, address the fluid-bed coating of placebo enzyme granules (i.e., sodium sulfate cores, with a size range of 400-500 µm) using two types of coatings: sodium sulfate and PVA-TiO 2 . The coating experiments were conducted in a medium-scale top-spray MP-1 fluid bed, and many rheological experiments were performed on the coating formulations to support the interpretation of the fluid-bed coating results. In this first part of the study, a thorough introduction to the inorganic salt and polymer film coating is provided, along with a presentation of the equipment and materials being used in this and the following papers. Results from agglomeration studies over a broad range of process conditions are presented, showing that the tendency toward agglomeration is always less for the salt coating process than for the polymer coating process, under similar process conditions. Based on the experimental results, an agglomeration regime map is suggested for each of the two types of coating solutions, based on values of the drying force and the coating solution spray rate.

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Section: Tackiness and The Work Of Adhesion Of Polymer Solutionsmentioning

confidence: 99%

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO₂, 1. Review and Agglomeration Regime Maps

Hede

Bach

Jensen

2009

Ind. Eng. Chem. Res.

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“…The cross‐linking was complete within 3 min, upon which the peel strength and bulk tack were reduced to 45% and 30%–40% of the original values, whereas the nanotack determined by atomic force microscopy decreased by ≈20%. In a related study, Phillips et al reported that nano and bulk‐tack of nanocomposites of SIS or SBS copolymers and C 60 fullerene are reduced upon exposure to white light . This effect is based on the capability of C 60 to generate singlet oxygen in the presence of visible light and molecular oxygen, which can rapidly induce irreversible oxidative cross‐linking of the unsaturated elastomers and promote a reduction of the adhesion.…”

Section: Irreversible Switching Of the Adhesive Propertiesmentioning

confidence: 99%

(De)bonding on Demand with Optically Switchable Adhesives

Hohl

Weder

2019

Advanced Optical Materials

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nature of polymer-based adhesives prevent their easy removal and stifle or complicate debonding, rebonding, (end-of-life) recycling, and repair. In this context, the development of debonding-on-demand (DoD) adhesive technologies is attracting rapidly growing interest. Indeed, DoD techniques have already entered commercial exploitation in applications such as easily removable wound dressings, [2,3] temporal fixation in semiconductor manufacturing, [4][5][6] and the repair, replacement, or recycling of components. [7][8][9] While many debonding technologies employ heat to reduce the adhesive strength by imparting physical property changes of the adhesive, [10][11][12][13][14] light-induced debonding technologies represent an emerging field and have been much less explored. Photoirradiation is an attractive alternative to thermal debonding as it allows an efficient, contactless, remote stimulation that can be temporally and spatially controlled. [15][16][17][18] Moreover, factors such as the irradiation wavelength, intensity, and time can easily be tuned and it is often possible to focus the energy entry to the adhesive and minimize or avoid exposure of (sensitive) substrates. Of course, the approach requires that at least one of the substrates to be bonded is sufficiently transparent.The design of a light-debondable adhesive system is strongly related to the adhesive type and the requirements imparted by the application(s) for which the adhesive is designed. For instance, pressure-sensitive adhesives (PSAs), such as used in adhesive tapes, need to efficiently adhere under ambient conditions with only a brief application of pressure, they should withstand the (comparably small) loads experienced while bonded, and they must also be easily removable, ideally without leaving any residues on the substrate. [19,20] PSAs are therefore normally based on lightly physically or chemically cross-linked rubbery polymers such as natural rubber, styrene butadiene block copolymers, and acrylics. These materials provide a balance between adhesive and cohesive performance, i.e., adequate stiffness and strength to resist deformation and cohesive failure, and appropriate elasticity in order to establish adequate contact with the substrate. [1] On the other hand, structural adhesives must be able to effectively transmit large loads across the bonded joint and the high strength and high rigidity required for this function are usually achieved by the formation of glassy networks. Examples of such materials include cross-linked epoxy resins, which may possess shear strengths of >35 MPa, cyanoacrylates (superglues), acrylics, and polyurethanes. [19] Adhesives that enable bonding and especially debonding on demand (DoD) have attracted rapidly growing interest in the last decade, as these capabilities greatly improve the functionality of adhesives, particularly in connection with temporal fixation, repair, and recycling. Indeed, DoD techniques have already entered commercial exploitation in applications such as easily removable wound dressin...

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“…However, study on the adhesive properties of rubberbased blends is rarely reported. Phillips et al [8,9] have studied the singlet oxygen generation and adhesive properties in polymer blends adhesives using block copolymers as the elastomers. Smitthipong et al [10] investigated the selfadhesion of immiscible polyisoprene rubber-hydrogenated acrylonitrile butadiene rubber blends, whereas Magida et al [11] reported the pressure-sensitive adhesive applications of compatible blend of styrene-vinyl acetate copolymer/natural rubber latex.…”

Section: Introductionmentioning

confidence: 99%

Adhesion Properties of Acrylonitrile-Butadiene Rubber/Standard Malaysian Rubber Blend Based Pressure-Sensitive Adhesive

Poh

Lamaming

Tay

2014

Journal of Coatings

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Viscosity and adhesion properties of NBR/SMR L blend based pressure-sensitive adhesive were investigated using coumaroneindene resin, toluene, and poly(ethylene terephthalate) (PET) as tackifier, solvent, and coating substrate, respectively. Coumaroneindene resin content was fixed at 40 parts per hundred parts of rubber (phr) in the adhesive formulation. The ratio of NBR/SMR L blend used was 0, 20, 40, 60, 80, and 100% of NBR content. Four different thicknesses, that is, 30, 60, 90, and 120 m, were used to coat the PET film. The viscosity of adhesive was determined by a Brookfield viscometer, whereas loop tack, peel strength, and shear strength were measured using a Lloyd Adhesion Tester operating at 30 cm/min. Result indicates that the viscosity, loop tack, and shear strength of blend adhesives increase with % NBR. However, for peel strength, it indicates a maximum at 40% NBR blend ratio for the three modes of peel tests. In all cases, 120 m coated sample consistently exhibits the highest adhesion values compared to the other coating thicknesses, an observation which is associated with the higher volume of adhesive in the former system.

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Nano- and bulk-tack adhesive properties of stimuli-responsive, fullerene–polymer blends, containing polystyrene-block-polybutadiene-block-polystyrene and polystyrene-block-polyisoprene-block-polystyrene rubber-based adhesives

Cited by 43 publications

References 19 publications

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO₂, 1. Review and Agglomeration Regime Maps

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO₂, 1. Review and Agglomeration Regime Maps

(De)bonding on Demand with Optically Switchable Adhesives

Adhesion Properties of Acrylonitrile-Butadiene Rubber/Standard Malaysian Rubber Blend Based Pressure-Sensitive Adhesive

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Nano- and bulk-tack adhesive properties of stimuli-responsive, fullerene–polymer blends, containing polystyrene-block-polybutadiene-block-polystyrene and polystyrene-block-polyisoprene-block-polystyrene rubber-based adhesives

Cited by 43 publications

References 19 publications

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO2, 1. Review and Agglomeration Regime Maps

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO2, 1. Review and Agglomeration Regime Maps

(De)bonding on Demand with Optically Switchable Adhesives

Adhesion Properties of Acrylonitrile-Butadiene Rubber/Standard Malaysian Rubber Blend Based Pressure-Sensitive Adhesive

Contact Info

Product

Resources

About

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO₂, 1. Review and Agglomeration Regime Maps

Fluidized-Bed Coating with Sodium Sulfate and PVA−TiO₂, 1. Review and Agglomeration Regime Maps