Ionic binding in pressure‐sensitive adhesive polymers

Satas, Donatas; Mihalik, R.

doi:10.1002/app.1968.070121013

Cited by 15 publications

(12 citation statements)

References 3 publications

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“…When was increased (latex D), the resistance to shear also increased, as mentioned in the literature. 14,15 An opposite trend was observed for resistance to peel, as can be deduced from ening the MWD, it is possible to produce a more balanced adhesive that can be used in different applications. Unfortunately this general rule gives only a qualitative idea of the MWD that should be produced for each application.…”

Section: Effect Of Gel Content and Mwd On Adhesive Propertiesmentioning

confidence: 90%

“…Although Satas 14,15 studied the effect of the on the adhesive properties, for the purpose of controlling the final adhesive properties, it is much more useful to understand the effect of the complete MWD, even if it is much more difficult to capture.…”

Section: Effect Of Gel Content and Mwd On Adhesive Propertiesmentioning

confidence: 99%

“…12,13 Resistance to shear and to peel depend also on the molecular weight of the polymer. 14,15 Although there are some qualitative studies on the effect of the average molecular weight (MW), the effect of the whole molecular weight distribution (MWD) is more elusive, and therefore, has not been very widely studied. Good tack values are observed for low MW polymers and the tackiness decreases when the MW is raised.…”

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confidence: 99%

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Knowledge-based control of emulsion polymerization: Tailoring adhesive properties

Elizalde¹,

Vicente

Plessis

et al. 2004

J Coat. Technol. Res.

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An on-line control strategy to produce copolymer latexes with desired adhesive properties (resistance to shear and resistance to peel) has been developed. The strategy required a quantitative model relating adhesive properties and molecular weight distribution that was built using partial least squares regression. The model was used to determine the set-point trajectories of the monomers and chain transfer agent that are used as manipulated variables in the control strategy. The control strategy was experimentally verified to produce an n-butyl acrylate/styrene copolymer latex with a resistance to shear of 1310 s and resistance to peel of 3.1 N/100 mm.A good control strategy for emulsion polymerization reactions must assure that a product with the desired final properties will be obtained. Unfortunately, most of the control strategies developed until now only allow for the control of the molecular properties of the polymer by manipulation of several process variables, 1-7 without including the final properties of the product in the control strategy.Historically, end-use and molecular properties of the product have been related using trial and error procedures, which are in most cases, highly time-consuming. This work is an attempt to relate those properties in a quantitative and reliable way and to include such a relationship in a control strategy in order to directly provide a product with the desired end-use properties.An important application of acrylic latexes is as pressure sensitive adhesives (PSAs), mainly used for labels, tapes, decorative films, protective materials, and wall and floor coverings. Each specific application requires appropriate end-use properties, characterized by a combination of specific values of adhesive properties such as tackiness, resistance to peel, and resistance to shear.It has been proved that several molecular properties of a latex, such as copolymer composition, average molecular weight and molecular weight distribution, level of branching, content of gel, and crosslinking, strongly affect the values of the adhesive properties. [8][9][10][11][12][13] The glass transition temperature (T g ) of the copolymer, which depends on the copolymer composition, determines to a very large extent the tackiness of the final product. 8 The adhesive performance is also affected by the composition profile. 9 Dale et al. 10 reported on the effect of crosslinking on the properties of acrylic adhesives, concluding that the crosslinking density should be low for a PSA, because a high degree of crosslinking, which severely affects tack and peel adhesion, may yield to a nontacky product. The gel content also affects the mechanical properties of the final product. 11-13 Generally, the presence of gel increases the resistance to peel and the resistance to shear and decreases the tack, although above certain levels of gel, resistance to both shear and peel dramatically decreased. 12,13 Resistance to shear and to peel depend also on the molecular weight of the polymer. 14,15 Although there are some qual...

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Section: Effect Of Gel Content and Mwd On Adhesive Propertiesmentioning

confidence: 90%

Section: Effect Of Gel Content and Mwd On Adhesive Propertiesmentioning

confidence: 99%

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confidence: 99%

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Knowledge-based control of emulsion polymerization: Tailoring adhesive properties

Elizalde¹,

Vicente

Plessis

et al. 2004

J Coat. Technol. Res.

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“…[3][4][5][6][7][8][9] Therefore, if a quantitative relationship between the microstructural properties of the polymer and end-use properties was available, it would be possible controlling the final properties of the latex by manipulating the process variables. [10,13] High molecular weight polymers present a good resistance to shear but this property degrades rapidly for lower molecular weights. These products are used for labels, tapes, decorative films, protective materials and wall and floor coverings.…”

Section: Introductionmentioning

confidence: 99%

“…This work explores this possibility for pressure sensitive adhesives (PSAs). [10,13] These results suggest that polymer chains of high molecular weight provide mechanical resistance and polymer chains of low molecular weight impart compatibility and adhesion. PSAs are characterized for end-use properties such as tack, resistance to peel and resistance to shear, and the optimal values of these magnitudes depend on the specific application.…”

Section: Introductionmentioning

confidence: 99%

Control of the Adhesive Properties of N-Butyl Acrylate/Styrene Latexes 1*

Elizalde¹,

Vicente²,

Leiza³

et al. 2002

Polym React Eng

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A model relating the adhesive properties and the complete molecular weight distribution of n-butyl acrylate/styrene latexes of fixed copolymer molar composition (85/15) was constructed using partial least squares regression (PLS-R). This quantitative relationship allows the prediction of the adhesive properties of the latexes from MWD measurements. After validation of the y Current address: Aiscondel División Química, ctra. nac. 240, km 147, model, it was combined with a control strategy, which allows the production of latexes of controlled copolymer composition and MWD. The resulting system can be regarded as a method for the control of the adhesive properties of the latex. This methodology was satisfactorily validated experimentally by the production of two latexes of different adhesive performance.

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Use of Advanced Silicone Materials in Long‐Lasting Cosmetics

Pawar

Falk

2021

Surface Science and Adhesion in Cosmetics

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Ionic binding in pressure‐sensitive adhesive polymers

Cited by 15 publications

References 3 publications

Knowledge-based control of emulsion polymerization: Tailoring adhesive properties

Knowledge-based control of emulsion polymerization: Tailoring adhesive properties

Control of the Adhesive Properties of N-Butyl Acrylate/Styrene Latexes 1*

Use of Advanced Silicone Materials in Long‐Lasting Cosmetics

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