Structure-Property Relationships in Acrylic Adhesives

Chan, Hung-Kong; Howard, G. J.

doi:10.1080/00218467808075121

Cited by 32 publications

(15 citation statements)

References 1 publication

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“…with acrylic ester monomers has also been demonstrated to increase peel strength [5,6] and tack, [7] and the affect of reducing polymer T g on the displacement of the horizontal axis of the peel master-curve towards lower peeling rates has been reported. [8] Recent studies of emulsion polymerised poly(butyl acrylate-co-acrylic acid) [2] and poly(2-ethylhexyl acrylate-co-acrylic acid) [9] random copolymers have also linked adhesive performance to the level of insoluble polymer fractions (gel) formed.…”

Section: Introductionmentioning

confidence: 99%

“…[9] The force measured during the peel testing of an adhesive joint has been widely shown to be strongly dependent upon the bulk viscoelastic response of the adhesive. [2,[6][7][8] The construction of peel master-curves via the selection of some reference temperature and the use of time-temperature superposition utilising the shift factors of the WilliamsLandel-Ferry (WLF) equation [14] allows the peel force response to be observed over a very wide range of effective peeling rates. Derail et al [15] demonstrated that the shift factors derived through peel adhesion master-curve construction were equivalent to those derived via rheological measurement.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Chain Transfer Agent Level on Adhesive Performance and Peel Master‐Curves for Acrylic Pressure Sensitive Adhesives

Gower¹,

Shanks

2004

Macro Chemistry & Physics

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Summary: Three series of pressure sensitive adhesives were prepared with fixed glass transition temperature, using emulsion polymerisation. Monomers chosen were butyl acrylate, 2‐ethylhexyl acrylate, and methyl methacrylate, along with a small amount of acrylic acid. The proportion of acrylic acid monomer was held constant for each polymer preparation while acrylate ester monomer levels were varied. The chain transfer agent level used was varied for each series of polymerisations. Adhesion performance was assessed by measurement of loop tack, static shear resistance, and through construction of peel master‐curves. Peel master‐curves were generated through peel tests conducted over a range of temperatures and peel rates and through application of the Boltzmann superposition principle. The presence of high levels of polymer gel was found to obscure the influence of monomer composition on adhesion performance. For polymers with low levels of gel, adhesion performance was correlated with changes in viscosity as comonomer composition was varied. In cohesive failure regions of peel master‐curves for polymers with high levels of chain transfer agent, the shift factors aT were found to closely fit the Williams‐Landel‐Ferry (WLF) equation and allowed the calculation of the WLF parameters, C1 and C2. The cohesive failure regions were successfully shifted to provide a “super” master‐curve and the values of aC used to generate the “super” master‐curve were applied to accurately predict relative static shear resistance levels. For low gel content polymers, loop tack was correlated with log(aC) as EHA levels were increased.Peel master‐curve for formulation AA4M91‐3.magnified imagePeel master‐curve for formulation AA4M91‐3.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Chain Transfer Agent Level on Adhesive Performance and Peel Master‐Curves for Acrylic Pressure Sensitive Adhesives

Gower¹,

Shanks

2004

Macro Chemistry & Physics

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“…As will be explained in more detail later, the presence of MAA results in intermolecular dipole-dipole interactions of the acid groups [23]. Chan and Howard [24] attributed these interactions as being responsible for the observed improved film adhesion at low concentration of acid. However, they found the tack to decrease with increasing acid concentration, as a result of hardening of the film.…”

Section: Acid Distribution In Latexesmentioning

confidence: 95%

The influence of copolymerization with methacrylic acid on poly(butyl acrylate) film properties

Koh

Mange

Bothe

et al. 2006

Polymer

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“…Debonding becomes possible by applying a distinct force. Typically the performance of PSA is measured in different probe test geometries like the peel or tack test 1–10. A special class of PSA applications strengthens the idea of an easy debonding.…”

Section: Introductionmentioning

confidence: 99%

Pressure‐Sensitive Adhesive Blend Films for Low‐Tack Applications

Müller‐Buschbaum

Ittner

Maurer

et al. 2007

Macro Materials & Eng

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Polymer blend films consisting of a tacky and a non-adhesive component are promising candidates for low tack applications. Immiscibility of both components results in a phase separation process yielding a tacky matrix with glassy objects embedded. The influence of the blending ratio of the components poly-n-butylacrylate (PnBA) and polystyrene (PS) is addressed. The mechanical information resulting from the tack test shows the possibility to vary the bonding strength of the PSA blend over a wide range. The macroscopic and microscopic structural characterization with optical microscopy and ultra small angle X-ray scattering shows that the blend PnBA:PS exhibits similarities to common filler systems as well as deviates regarding installed structures. Due to the large domain size on a microscopic level, only the tacky component, PnBA, defines the adhesive behavior. The non-adhesive component limits the contact area between the adhesive and the substrate.

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Structure-Property Relationships in Acrylic Adhesives

Cited by 32 publications

References 1 publication

The Effect of Chain Transfer Agent Level on Adhesive Performance and Peel Master‐Curves for Acrylic Pressure Sensitive Adhesives

The Effect of Chain Transfer Agent Level on Adhesive Performance and Peel Master‐Curves for Acrylic Pressure Sensitive Adhesives

The influence of copolymerization with methacrylic acid on poly(butyl acrylate) film properties

Pressure‐Sensitive Adhesive Blend Films for Low‐Tack Applications

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