Effects of miscibility and viscoelasticity on shear creep resistance of natural-rubber-based pressure-sensitive adhesives

Fujita, Michiko; Takemura, Akimichi; Ono, Hirokuni; Kajiyama, Mikio; Hayashi, Shunji; Mizumachi, Hiroshi

doi:10.1002/(sici)1097-4628(20000321)75:12<1535::aid-app12>3.0.co;2-1

Cited by 36 publications

(23 citation statements)

References 9 publications

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“…The entanglement molecular weight (M e ) can be estimated from the plateau modulus (G 0 n ) as follows [29][30][31][32]: where ρ is the density of the polymer or blend, R is 8.31 × 10 7 dyne-cm/mol K, T is the absolute temperature where G 0 n is located, and G 0 n is determined from the storage modulus (G ) at the onset of the rubbery region (usually where tan δ reaches minimum following the prominent maximum).…”

Section: Dynamic Mechanical Properties Of Bims-hydrocarbon Resin Blendsmentioning

confidence: 99%

Unique Behavior of Hydrocarbon Resin Tackifier on Unaged and Aged Tack of Brominated Isobutylene-co-p-methylstyrene (BIMS) Rubber

Kumar

Tsou

Bhowmick

2008

Journal of Adhesion Science and Technology

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Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/ AbstractThe effect of hydrocarbon resin tackifier on autohesion of brominated isobutylene-co-p-methylstyrene (BIMS) rubber was investigated by a 180 • peel test. The tack strength increased with resin (tackifier) loading up to 10 phr beyond which it dropped. At 10 phr resin concentration, the tackifier enhanced the self-bond formation by enhancing the chain mobility across the interface and, in turn, by providing greater separation resistance from the diffused chains. These conclusions were derived from measured maximum tensile stress, compression creep and viscoelastic properties of the rubber-resin mixtures. The tack strength of neat BIMS rubber showed t 1/2 dependence with respect to increasing contact time (t). On the other hand, the tack strength of the resin loaded sample showed t 1/4 time dependence on contact time. Although the results from dynamic mechanical analysis (DMA) studies suggested good compatibility between the blend components, morphological studies revealed migration of the tackifier to the rubber surface. Upon aging at 100 • C for 36 h, the values of tack strength of both the neat BIMS rubber and the BIMS/tackifier blends significantly decreased. The reduced tack strength of the aged samples was attributed to the changes in compression creep, maximum tensile stress and viscoelastic properties of the samples after aging. Upon aging, the resin loaded samples exhibited excessive blooming of the tackifier onto the rubber surface.

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Section: Dynamic Mechanical Properties Of Bims-hydrocarbon Resin Blendsmentioning

confidence: 99%

Unique Behavior of Hydrocarbon Resin Tackifier on Unaged and Aged Tack of Brominated Isobutylene-co-p-methylstyrene (BIMS) Rubber

Kumar

Tsou

Bhowmick

2008

Journal of Adhesion Science and Technology

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“…However, for higher molecular weight, poor adhesive strength is observed as a result of poor wettabilty. The maximum shear strength is obtained at the optimum molecular weight of 8?5610 4 where the optimum combination of cohesive and adhesive strength is achieved. Shear strength of adhesive also increases with coating thickness, an observation which is attributed to increasing amount of rubber component present in the coating layer which enhances the shear resistance of the adhesive.…”

Section: Discussionmentioning

confidence: 99%

“…Kraus et al 2,3 have studied the adhesive behaviour of the styrene-diene based pressure sensitive adhesives and the structural changes in melts of butadiene-styrene and isoprene-styrene block polymer based adhesives. Fujita et al 4 have investigated the effects of miscibility and viscoelasticity on shear creep resistance of natural rubber based pressure sensitive adhesives. On the other hand, Leong et al 5 have reported on the viscoelastic properties of natural rubber pressure sensitive adhesive using acrylic resin as a tackifier.…”

Section: Introductionmentioning

confidence: 99%

Dependence of adhesion properties of SMR L based adhesive on molecular weight of rubber

Poh

Issam

2009

Plastics, Rubber and Composites

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The viscosity, loop tack, peel and shear strength of five different molecular weights of standard Malaysian rubber based pressure sensitive adhesive were studied. Coumarone-indene resin and toluene were used as the tackifier and solvent respectively throughout the experiment. The adhesive was coated on polyethylene terephthalate substrate at a coating thickness of 30, 60, 90 and 120 mm using a Sheen hand coater. Viscosity of the adhesive was determined by a Haake rotary viscometer whereas loop tack, shear and peel strength was measured by a Llyod adhesion tester. Results show that viscosity of adhesive increases with increasing molecular weight of rubber. However, loop tack, shear and peel strength exhibit maximum value at a molecular weight of 8?5610 4 where maximum wettability of adhesive on the substrate occurs. The adhesion property increases with coating thickness at this optimum molecular weight of rubber.

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“…Leong et al investigated the viscoelastic properties of natural rubber pressure‐sensitive adhesive by using acrylic resin as a tackifier. On the other hand, Fujita et al reported the effects of miscibility and viscoelasticity on peel strength and shear creep resistance of (natural rubber)‐based pressure‐sensitive adhesives. Modeling of the peel performance of (natural rubber)‐based pressure‐sensitive adhesives at different rates of testing was also carried out .…”

Section: Introductionmentioning

confidence: 99%

Adhesion properties of benzoyl peroxide crosslinked epoxidized natural rubber (ENR 25)-based pressure-sensitive adhesives

Poh

Suid

2014

J Vinyl Addit Technol

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Adhesion properties of crosslinked (epoxidized natural rubber)‐based adhesives were studied by using coumarone‐indene, benzoyl peroxide, and toluene as tackifying resin, crosslinking agent, and solvent, respectively. The adhesion properties were measured by a Lloyd Adhesion Tester operating at 30 cm min−1. Results show that loop tackiness and peel strength pass through a maximum value at 1 phr (parts by weight per hundred parts of resin) of benzoyl peroxide concentration, an observation that is attributed to the optimum crosslinking of epoxidized natural rubber whereby optimum cohesive and adhesive strength are obtained. However, shear strength increases with increasing benzoyl peroxide concentration wherein the higher rate of increase is observed between 0 and 1 phr of benzoyl peroxide content. This observation is associated with the steady increase in cohesive strength as crosslinking is increased. In all cases, the adhesion properties of adhesives increased with increasing coating thickness. J. VINYL ADDIT. TECHNOL., 22:8–12, 2016. © 2014 Society of Plastics Engineers

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Effects of miscibility and viscoelasticity on shear creep resistance of natural-rubber-based pressure-sensitive adhesives

Cited by 36 publications

References 9 publications

Unique Behavior of Hydrocarbon Resin Tackifier on Unaged and Aged Tack of Brominated Isobutylene-co-p-methylstyrene (BIMS) Rubber

Unique Behavior of Hydrocarbon Resin Tackifier on Unaged and Aged Tack of Brominated Isobutylene-co-p-methylstyrene (BIMS) Rubber

Dependence of adhesion properties of SMR L based adhesive on molecular weight of rubber

Adhesion properties of benzoyl peroxide crosslinked epoxidized natural rubber (ENR 25)-based pressure-sensitive adhesives

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