The effects of substrate surface properties on tack performance of acrylic Pressure-Sensitive Adhesives (PSAs)

Kowalski, Arkadiusz; Czech, Zbigniew

doi:10.1016/j.ijadhadh.2015.03.004

Cited by 31 publications

(7 citation statements)

References 21 publications

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“…Both 70:30 PSTA blends are shifted toward the viscous-dominated regime (tan(δ) > 1): this imbues them with the high wettability and compliance (Figure C) necessary to quickly form adhesive bonds under pressure (Figure D) that pure HMW polymer cannot. Surface properties were also investigated by measuring the water droplet contact angle (Figure S2), as surface energy may influence interface formation and wetting behavior. − Interestingly, the PLCL used here is relatively hydrophilic, producing contact angles less than 90° for all types. However, there are no significant differences between the various PLCL groups at the time of application, which suggests that excellent wetting properties of the LMW PLCL blend PSTAs are largely a function of viscoelasticity and mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

Pressure-Sensitive Tissue Adhesion and Biodegradation of Viscoelastic Polymer Blends

Daristotle

Zaki

Lau

et al. 2020

ACS Appl. Mater. Interfaces

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Viscoelastic blends of biodegradable polyesters with low and high molecular weight distributions have remarkably strong adhesion (significantly greater than 1 N/cm2) to soft, wet tissue. Those that transition from viscous flow to elastic, solidlike behavior at approximately 1 Hz demonstrate pressure-sensitivity yet also have sufficient elasticity for durable bonding to soft, wet tissue. The pressure-sensitive tissue adhesive (PSTA) blends produce increasingly stronger pull-apart adhesion in response to compressive pressure application, from 10 to 300 s. By incorporating a stiffer high molecular weight component, the PSTA exhibits dramatically improved burst pressure (greater than 100 kPa) when used as a tissue sealant. The PSTA’s biodegradation mechanism can be switched from erosion (occurring primarily over the first 10 days) to bulk chemical degradation (and minimal erosion) depending on the chemistry of the high molecular weight component. Interestingly, fibrosis toward the PSTA is reduced when fast-occurring erosion is the dominant biodegradation mechanism.

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Section: Resultsmentioning

confidence: 99%

Pressure-Sensitive Tissue Adhesion and Biodegradation of Viscoelastic Polymer Blends

Daristotle

Zaki

Lau

et al. 2020

ACS Appl. Mater. Interfaces

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“…There are many carbonate groups () in the PC substrate, thus the hydrogen bonding interactions between carbonate groups in the PC surface and urethane groups in the RPUA play a major important role in the adhesion to the PC substrate. Furthermore, the surface free energy of PC substrate (38.2 mJ/m 2 ) is higher than that of S‐steel substrate (35.6 mJ/m 2 ), which lead to superior wettability 42 . Thus the ultimate lap shear strength for all RPUA on the PC substrate is greater than on S‐steel substrate.…”

Section: Resultsmentioning

confidence: 96%

A novel polyether polyol contains repeating cyclohexane units and its application on reactive polyurethane adhesive

Zong

Fang

Zhao

et al. 2020

Polymers for Advanced Techs

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A novel polyether polyol was successfully synthesized from cyclohexene oxide (CO), propylene oxide (PO), and poly(propylene glycol) 400 through ring-opening polymerization, catalyzed by double metal cyanide catalyst for the first time. Then, the obtained cyclohexane-based polyether polyol (CPOL) further reacted with 4,4 0-diphenylmethane diisocyanate to form reactive polyurethane adhesive (RPUA). The thermal properties and mechanical strength of the RPUA were characterized by differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis, and lap shear strength test. It was found that with the introduction of cyclohexane units, the glass transition temperature (T g) and thermal stability of the RPUA increased about 122.3% and 3.32%, respectively. Besides, the lap shear strength of the RPUA prepared with the synthesized CPOL was 130.67% higher than the counterpart derived from conventional polyether polyol 2000. Furthermore, compared with RPUA-PPG, RPUA-CPOL also exhibited excellent lap shear strength on polycarbonate substrate even when the adhesion joints were immersed into hot water or alkaline solvent. All the above results suggest that the cyclohexane units in polyether polyol have great improvements in the thermal stability and lap shear strength of RPUA.

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“…These results are because of the surface wettability of the acrylic PSA films. The adhesive characteristics of acrylic PSA film are greatly influenced by the wettability of the surface [ 44 , 45 , 46 ]. When the hydrophilicity of the acrylic PSA film is increased, the surface energy is increased to improve interaction with the substrate, thereby increasing the adhesive strength.…”

Section: Resultsmentioning

confidence: 99%

Change of Characterization and Film Morphology Based on Acrylic Pressure Sensitive Adhesives by Hydrophilic Derivative Ratio

et al. 2020

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Hydrophilic acrylic pressure-sensitive adhesives (PSAs) were synthesized by controlling the contents of 2-ethylhexyl acrylate (EHA), isobornyl acrylate (IBOA), and 2-hydroxyethyl acrylate (HEA); especially, the characteristic change of the HEA content was analyzed. Surface contact angle of acrylic PSA film decreased from 77.87° to 70.23° in the case of Acryl-2 to Acryl-8 (below HEA 10 wt %). However, the surface contact angle of Acryl-10 to Acryl-40 (HEA 10 wt % to 40 wt %) increased up to 92.29°, indicating hydrophobicity. All acrylic PSA films showed high adhesive force above 1800 gf/25 mm. According to X-ray diffraction (XRD) measurement, hydrophilic acrylic PSAs exhibited amorphous property and it was confirmed that the morphology of acrylic PSA film was significantly affected by the flexibility of the polymer chain and the strength of hydrogen bonding. The affinity with hydrophilic materials for acrylic PSA films was evaluated by T-type peel test, confirming that the affinity with hydrophilic materials is determined by the hydrophilicity of the acrylic PSA film. The synthesized acrylic PSA film is non-toxic regardless of the hydrophilicity.

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The effects of substrate surface properties on tack performance of acrylic Pressure-Sensitive Adhesives (PSAs)

Cited by 31 publications

References 21 publications

Pressure-Sensitive Tissue Adhesion and Biodegradation of Viscoelastic Polymer Blends

Pressure-Sensitive Tissue Adhesion and Biodegradation of Viscoelastic Polymer Blends

A novel polyether polyol contains repeating cyclohexane units and its application on reactive polyurethane adhesive

Change of Characterization and Film Morphology Based on Acrylic Pressure Sensitive Adhesives by Hydrophilic Derivative Ratio

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