Preparation of bio-bitumen by bio-oil based on free radical polymerization and production process optimization

Zhaojie Sun, Junyan Yi*, Decheng Feng, Cor Kasbergen, Athanasios Scarpas, Yiming Zhu

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)
257 Downloads (Pure)


Bio-oil produced during the production of biodiesel is a burden to the environment. Recycling and utilization of bio-oil as a substitute for pavement bitumen can help to build an environmentally-friendly and clean infrastructure. In this study, the bio-bitumen was prepared by bio-oil based on free radical polymerization. Different kinds of bio-bitumen products were produced by reacting bio-oil with an initiator and an accelerator solution at different reaction conditions. The orthogonal experimental method was employed to determine the optimal bio-bitumen production process by evaluating the indices of viscosity, rutting factors and fatigue factors. The test results show that the optimal mass proportions of bio-oil:initiator:accelerator solution is 100:1:2. Materials with these mass proportions should react at 100 °C for 2 h to yield the best bio-bitumen product. This kind of bio-bitumen product can be considered as a promising substitute for traditional petroleum bitumen.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalJournal of Cleaner Production
Publication statusPublished - 10 Jul 2018


  • Bio-bitumen
  • Bio-oil
  • Free radical polymerization
  • Production process optimization
  • Waste cooking oil


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