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Effects of detergent concentration and ethylene oxide chain length of the detergent molecule on stress-cracking of low-density polyethylene

Journal Article


Abstract


  • Stress-cracking behaviour of low-density polyethylene is investigated using a fracture mechanics approach. It is experimentally observed that Kl independent crack speed is directly proportional to the concentration of Igepal CO-630 up to 25% concentration. KISCC is found to increase with detergent concentration; and the increase in KISCC is attributed to the larger amounts of detergent absorption in the higher concentrations, which decreases the strain localization at the crack tip. Micelle formation of detergents in water is thought to enhance the rate of cracking because of their ability to increase plasticization efficiency at the local area because the micelles contain larger amounts of aggressive molecules. In contrast to Williams' model, the cracking behaviour in the constant crack speed region is found to be not controlled by the flow properties of the environment. �� 1987 Chapman and Hall Ltd.

UOW Authors


  •   Brown, Hugh (external author)

Publication Date


  • 1987

Citation


  • Tonyali, K., & Brown, H. R. (1987). Effects of detergent concentration and ethylene oxide chain length of the detergent molecule on stress-cracking of low-density polyethylene. Journal of Materials Science, 22(9), 3287-3292. doi:10.1007/BF01161193

Scopus Eid


  • 2-s2.0-0023408112

Web Of Science Accession Number


Start Page


  • 3287

End Page


  • 3292

Volume


  • 22

Issue


  • 9

Place Of Publication


Abstract


  • Stress-cracking behaviour of low-density polyethylene is investigated using a fracture mechanics approach. It is experimentally observed that Kl independent crack speed is directly proportional to the concentration of Igepal CO-630 up to 25% concentration. KISCC is found to increase with detergent concentration; and the increase in KISCC is attributed to the larger amounts of detergent absorption in the higher concentrations, which decreases the strain localization at the crack tip. Micelle formation of detergents in water is thought to enhance the rate of cracking because of their ability to increase plasticization efficiency at the local area because the micelles contain larger amounts of aggressive molecules. In contrast to Williams' model, the cracking behaviour in the constant crack speed region is found to be not controlled by the flow properties of the environment. �� 1987 Chapman and Hall Ltd.

UOW Authors


  •   Brown, Hugh (external author)

Publication Date


  • 1987

Citation


  • Tonyali, K., & Brown, H. R. (1987). Effects of detergent concentration and ethylene oxide chain length of the detergent molecule on stress-cracking of low-density polyethylene. Journal of Materials Science, 22(9), 3287-3292. doi:10.1007/BF01161193

Scopus Eid


  • 2-s2.0-0023408112

Web Of Science Accession Number


Start Page


  • 3287

End Page


  • 3292

Volume


  • 22

Issue


  • 9

Place Of Publication