Unsaturated polyester (UP) resin containing aromatic ring was blended with vinyl ester (VE) at wide range composition (10, 20, 30, 40,and 80 wt.%) using mechanical blending method. The blends were cured at room temperature using methyl ethyl ketone peroxide (MEKP) (4 wt.%) as catalyst initiator without the presence of catalystaccelerator. The effect of vinyl ester composition on theenhancement of mechanical and thermal properties of unsaturated polyester/vinyl ester blends was investigated. The polymer blends were characterized by Fourier Transform Infra Red (FTIR)spectroscopy, tensile testing, hardness testing, scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). IR spectra showed UP and VE peaks. The curing copolymerization reactionoccurred at vinyl (C=C) bonds. The addition of vinyl esters enhanced mechanical and thermal properties. The UP/VE blends showed homogeneous morphology, transparent and copolymer thermoset blend.

Original languageEnglish
Article number012088
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 31 May 2017
Event4th International Conference on Advanced Materials Science and Technology 2016, ICAMST 2016 - Malang, Indonesia
Duration: 27 Sept 201628 Sept 2016


  • polymer blend
  • thermal properties
  • unsaturated polyester
  • vinyl ester


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