Compatibilization of PLA/PBAT blends by using Epoxy-POSS


Kilic N. T. , Can B. N. , KODAL M. , ÖZKOÇ G.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.136, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 136 Konu: 12
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1002/app.47217
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE

Özet

Poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends were compatibilized using epoxidized polyhedral oligomeric silsesquioxanes (Epoxy-POSS). Three different Epoxy-POSS types were utilized having mono-, tri-, and multi-epoxides per POSS cage. In order to understand the localization of Epoxy-POSS types, wetting coefficients were calculated from surface energy measurements. According to scanning electron microscopy (SEM) and transmission electron microscopy (TEM), it was observed that Epoxy-POSS types mostly located at the interface of PLA/PBAT phases. The compatibilization of PLA and PBAT was shown through the decrease in dispersed particles size and the shifts in glass transition temperatures of phases. Mechanical properties of PLA/PBAT improved in the presence of Epoxy-POSS types. The Izod impact strength and elongation in tensile test values were maximized when 0.5% monoepoxy-POSS was used as compatibilizer. The reactions between Epoxy-POSS and polymers were monitored by Fourier transform infrared (FTIR) analysis and rheology. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47217.