Pressure sensitive adhesion and viscoelasticity of polyvinyl alcohol hydrogels. II. Simulation and prediction of pressure sensitive adhesion by viscoelastic data.

Urushizaki, Fumio; Mizumachi, Hiroshi

doi:10.1248/cpb.39.159

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…However, tests capable of measuring the simultaneous effect of pressure sensitivity and short-term dwell time are rather limited. Urushizaki and Mizumachi [18] used a high-speed rotating cylinder method to test the rolling friction of tacky poly(vinyl alcohol) hydrogels. Their procedure provided useful information on bonding and debonding processes.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, Miyagi et al [19] analyzed the plowing and adhesive effects of acrylic PSA with the rolling ball tack method, using a spherical probe tester and a pressure-controlle d high-speed rotary drum, respectively. The latter test procedures [18,19], although successful in characterizing bonding processes, were limited to some extent with regard to the range of applied loads. Moreover, probe surface roughness was not considered.…”

Section: Introductionmentioning

confidence: 99%

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Testing the rolling tack of pressure-sensitive adhesive materials. Part II: Effect of adherend surface roughness

Ben-Zion¹,

Nussinovitch²

2002

Journal of Adhesion Science and Technology

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A novel method and custom-made apparatus for testing the rolling tack of pressuresensitive adhesives (PSAs) and related materials were developed to measure bonding and debonding processes. The combined effects of adherend (probe) surface roughness, longitudinal load, and dwell time on bond-formation performance of ve different tacky materials chosen from various application areas were studied. These materials included synthetic PSAs (acrylic tape and the hydrocolloid dressing, Granu ex ® ), water-remoistenable adhesive (CENTRAL ® ), edible wheat our dough, and a static cling vinyl (PENSTIC ® ). Tack-rolling velocity curves were analyzed to study bonding and debondong processes. Each of the tested materials showed different tack behavior in response to varying probe roughness, external load, and velocity (dwell time). Surface wetting and mechanical interlocking were proposed as the mechanisms governing tack in most tested PSAs. Acrylic PSA tested on a smooth probe over a velocity range of 0.12-2.12 m / s showed higher tack values than on a rough one. A signi cant reduction in tack was due to restricted bond formation. Similarly, tack of Granu ex ® to a smooth model skin surface showed higher values than to a rough skin surface. CENTRAL ® showed typical cohesive failure when tested on silicone-coated paper. Interfacial failure and short-term bonding accounted for good tack performance on porous paper. Dough tested with aluminum probes showed cohesive failure similar to that of CENTRAL ® at velocities higher than 0.2 m/ s where the tack was independent of probe surface roughness. PENSTIC ® adhered only to smooth glass where the tack values tended to decrease with increased velocity. Bonding and debonding processes of the various tacky materials were clearly affected by adherend surface roughness, longitudinal load, and dwell time, and could be successfully analyzed using our novel proposed method and apparatus.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Testing the rolling tack of pressure-sensitive adhesive materials. Part II: Effect of adherend surface roughness

Ben-Zion¹,

Nussinovitch²

2002

Journal of Adhesion Science and Technology

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“…4 However, not much is known about the mechanisms underlying tack in PVA gels adhered to skin. Urushizaki and coworkers 5,6 found a significant positive correlation between the rolling friction coefficient and dynamic moduli of PVA gels. Cha et al 7 found the peel adhesion of cryogenic PVA hydrogels to be intimately tied to the state of Ca 2ϩ ion hydration in an aqueous environment.…”

Section: Introductionmentioning

confidence: 97%

Determination of green‐bond strength in tacky poly(vinyl alcohol) hydrogels

Ben-Zion

Karpasas

Nussinovitch

2003

J of Applied Polymer Sci

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Pressure-sensitive tack is the adhesive property related to bond formation. It is a key issue when formulating hydrogel poultices for transdermal delivery, dressings, and bioelectrodes. Quantitative tack gives an indication of the potential ease and success of application when gels are brought into contact with skin. The effects of different dwell times and constant pressures on bond formation between tacky poly(vinyl alcohol) (PVA) hydrogels and a skin model were explored in the current study; these were correlated with viscoelastic properties in order to elucidate structurefunction relationships. A rolling tack test was performed using a novel apparatus capable of simultaneously controlling the pressure and dwell time in a hydrogel/skin-modelprobe system. PVA gels were formed via the freeze-thaw technique using Ca 2ϩ ions. Lower calcium availability in PVA gels resulted in longer dwell times required to complete bond formation, decreased creep compliance (at 0.01 s) and a decreased G Ј ( ϭ 40) /G Ј ( ϭ 0.01) ratio, all three leading to a loss in tack strength. All tested gels were found to have pressure-sensitive tack. The results of this study support the applicability of a rheological methodology and a novel tacktesting procedure to quantify green-bond formation in pressure-sensitive-adhesive PVA hydrogels.

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Testing the rolling tack of pressure-sensitive adhesive materials. Part I. Novel method and apparatus

Ben-Zion¹,

Nussinovitch²

2002

Journal of Adhesion Science and Technology

View full text Add to dashboard Cite

Pressure sensitive adhesion and viscoelasticity of polyvinyl alcohol hydrogels. II. Simulation and prediction of pressure sensitive adhesion by viscoelastic data.

Cited by 3 publications

References 1 publication

Testing the rolling tack of pressure-sensitive adhesive materials. Part II: Effect of adherend surface roughness

Testing the rolling tack of pressure-sensitive adhesive materials. Part II: Effect of adherend surface roughness

Determination of green‐bond strength in tacky poly(vinyl alcohol) hydrogels

Testing the rolling tack of pressure-sensitive adhesive materials. Part I. Novel method and apparatus

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