Journal of Material Cycles and Waste Management

, Volume 18, Issue 1, pp 156–167 | Cite as

Recyclability of novel dynamically cured copolyester/epoxidized natural rubber blends

  • K. Sasdipan
  • A. Kaesaman
  • C. Kummerlöwe
  • N. Vennemann
  • C. Nakason
ORIGINAL ARTICLE
  • 323 Downloads

Abstract

Dynamically cured copolyester (COPE)/epoxidized natural rubber blends, with 50 mol % epoxide in the natural rubber (ENR-50), were prepared and the recyclability was investigated over 5 reprocessing cycles. It was found that stiffness, modulus, tensile strength, tension set value and hardness properties increased, while elongation at break and degree of swelling decreased with the count of reprocessing cycles. In addition, the recycled blends from reprocessing all had similar particle sizes of dispersed vulcanized rubber in the COPE matrix. It was also found that the thermomechanical properties observed by temperature scanning stress relaxation (TSSR) decreased with the reprocessing cycles. Furthermore, Tg of the rubber phase shifted upwards with the reprocessing cycles, while Tg, Tm and crystallinity of the copolyester phase remained almost unchanged.

Keywords

Recyclability Copolyester Epoxidized natural rubber Temperature scanning stress relaxation (TSSR) 

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Copyright information

© Springer Japan 2014

Authors and Affiliations

  • K. Sasdipan
    • 1
  • A. Kaesaman
    • 1
  • C. Kummerlöwe
    • 3
  • N. Vennemann
    • 3
  • C. Nakason
    • 2
  1. 1.Faculty of Science and TechnologyPrince of Songkla University, Pattani CampusPattaniThailand
  2. 2.Faculty of Science and Industrial TechnologyPrince of Songkla University, Surat Thani CampusPhuketThailand
  3. 3.Faculty of Engineering and Computer ScienceUniversity of Applied Sciences of OsnabrückOsnabrückGermany

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