Effect of molecular weight and testing rate on adhesion property of pressure-sensitive adhesives prepared from epoxidized natural rubber

Imran Khan, B. T. Poh

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The dependence of peel strength and shear strength of epoxidized natural rubber (ENR 25)-based pressure-sensitive adhesive on molecular weight and rate of testing was investigated using coumarone-indene as the tackifying resin. Toluene and polyethylene terephthalate (PET) were used as the solvent and substrate respectively throughout the study. A SHEEN hand coater was used to coat the adhesive on the substrate at a coating thickness of 120μm. All the adhesion properties were determined by a Llyod Adhesion Tester operating at different rates of testing. Result shows that peel strength and shear strength increases up to an optimum molecular weight of 6.5×104 of ENR 25. For peel strength, the observation is attributed to the combined effects of wettability and mechanical strength of rubber at the optimum molecular weight, whereas for the shear strength, it is ascribed to the increasing amount of adhesive present in the coating layer which enhances the shear resistance of the adhesive. Peel strength and shear strength also increases with increase in rate of testing, an observation which is associated to the viscoeslastic response of the adhesive. Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) study confirms the miscibility of tackifier and the ENR 25.

Original languageEnglish
Pages (from-to)2513-2519
Number of pages7
JournalMaterials and Design
Volume32
Issue number5
DOIs
Publication statusPublished - May 2011

Fingerprint

Rubber
Adhesives
Adhesion
Shear strength
Molecular weight
Testing
Coatings
Polyethylene Terephthalates
Toluene
Substrates
Polyethylene terephthalates
Strength of materials
Fourier transform infrared spectroscopy
Wetting
Differential scanning calorimetry
Resins
Solubility

Keywords

  • A. Elastomers and rubber
  • G. Thermal analysis
  • I. Adhesion

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Effect of molecular weight and testing rate on adhesion property of pressure-sensitive adhesives prepared from epoxidized natural rubber. / Khan, Imran; Poh, B. T.

In: Materials and Design, Vol. 32, No. 5, 05.2011, p. 2513-2519.

Research output: Contribution to journalArticle

@article{f8e0ced760504df2bd6166e9f23f3091,
title = "Effect of molecular weight and testing rate on adhesion property of pressure-sensitive adhesives prepared from epoxidized natural rubber",
abstract = "The dependence of peel strength and shear strength of epoxidized natural rubber (ENR 25)-based pressure-sensitive adhesive on molecular weight and rate of testing was investigated using coumarone-indene as the tackifying resin. Toluene and polyethylene terephthalate (PET) were used as the solvent and substrate respectively throughout the study. A SHEEN hand coater was used to coat the adhesive on the substrate at a coating thickness of 120μm. All the adhesion properties were determined by a Llyod Adhesion Tester operating at different rates of testing. Result shows that peel strength and shear strength increases up to an optimum molecular weight of 6.5×104 of ENR 25. For peel strength, the observation is attributed to the combined effects of wettability and mechanical strength of rubber at the optimum molecular weight, whereas for the shear strength, it is ascribed to the increasing amount of adhesive present in the coating layer which enhances the shear resistance of the adhesive. Peel strength and shear strength also increases with increase in rate of testing, an observation which is associated to the viscoeslastic response of the adhesive. Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) study confirms the miscibility of tackifier and the ENR 25.",
keywords = "A. Elastomers and rubber, G. Thermal analysis, I. Adhesion",
author = "Imran Khan and Poh, {B. T.}",
year = "2011",
month = "5",
doi = "10.1016/j.matdes.2011.01.057",
language = "English",
volume = "32",
pages = "2513--2519",
journal = "Materials and Design",
issn = "0264-1275",
publisher = "Elsevier BV",
number = "5",

}

TY - JOUR

T1 - Effect of molecular weight and testing rate on adhesion property of pressure-sensitive adhesives prepared from epoxidized natural rubber

AU - Khan, Imran

AU - Poh, B. T.

PY - 2011/5

Y1 - 2011/5

N2 - The dependence of peel strength and shear strength of epoxidized natural rubber (ENR 25)-based pressure-sensitive adhesive on molecular weight and rate of testing was investigated using coumarone-indene as the tackifying resin. Toluene and polyethylene terephthalate (PET) were used as the solvent and substrate respectively throughout the study. A SHEEN hand coater was used to coat the adhesive on the substrate at a coating thickness of 120μm. All the adhesion properties were determined by a Llyod Adhesion Tester operating at different rates of testing. Result shows that peel strength and shear strength increases up to an optimum molecular weight of 6.5×104 of ENR 25. For peel strength, the observation is attributed to the combined effects of wettability and mechanical strength of rubber at the optimum molecular weight, whereas for the shear strength, it is ascribed to the increasing amount of adhesive present in the coating layer which enhances the shear resistance of the adhesive. Peel strength and shear strength also increases with increase in rate of testing, an observation which is associated to the viscoeslastic response of the adhesive. Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) study confirms the miscibility of tackifier and the ENR 25.

AB - The dependence of peel strength and shear strength of epoxidized natural rubber (ENR 25)-based pressure-sensitive adhesive on molecular weight and rate of testing was investigated using coumarone-indene as the tackifying resin. Toluene and polyethylene terephthalate (PET) were used as the solvent and substrate respectively throughout the study. A SHEEN hand coater was used to coat the adhesive on the substrate at a coating thickness of 120μm. All the adhesion properties were determined by a Llyod Adhesion Tester operating at different rates of testing. Result shows that peel strength and shear strength increases up to an optimum molecular weight of 6.5×104 of ENR 25. For peel strength, the observation is attributed to the combined effects of wettability and mechanical strength of rubber at the optimum molecular weight, whereas for the shear strength, it is ascribed to the increasing amount of adhesive present in the coating layer which enhances the shear resistance of the adhesive. Peel strength and shear strength also increases with increase in rate of testing, an observation which is associated to the viscoeslastic response of the adhesive. Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) study confirms the miscibility of tackifier and the ENR 25.

KW - A. Elastomers and rubber

KW - G. Thermal analysis

KW - I. Adhesion

UR - http://www.scopus.com/inward/record.url?scp=79952188073&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952188073&partnerID=8YFLogxK

U2 - 10.1016/j.matdes.2011.01.057

DO - 10.1016/j.matdes.2011.01.057

M3 - Article

AN - SCOPUS:79952188073

VL - 32

SP - 2513

EP - 2519

JO - Materials and Design

JF - Materials and Design

SN - 0264-1275

IS - 5

ER -