Any ideas on how to improve adhesion of cement paste to polyethylene terephthalate (PET) particles remaining after grounding/shredding the bottles?
i suggest two solution to improve adhesive and bonding between cement and PET by using manufacture emboss PET . and also by coated PET using cement mortar before casting.
Aktham Hatem Alani,
I have never not thought of the second solution. Worth of trying. Thank you!
There is some solutions. You can greatly improve the adhesive strength between the cement matrix and PET by surface oxidation modification of polymer.
Ideal solution should be sufrace grafting with costly H2NCH2CH2CH2Si(OR)3 ( R=Me or Et) - to achive covalent bonding of hydrophobic PET with hydrophilic alumosilicate (cement). Related example to develop this idea (as HOCH2CH2- grafting) check by attached link. Cheap H2NCH2CH2NH2, H2NCH2CH2OH and H2NCH2CH2OCH2CH2OH could be also useful in place of costly aminosilane. All this compounds should build amides of terephthalic acid.
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Daniel Wiliński, Andrei Rogoza, thank you for your advices. I will try your solutions.
Dear Joanna Sokolowska,
The surface modification of your PET I would strongly suggest as has been done by the other researchers on this thread. You can also try oxyfluorination which has also shown to be useful with PP fibres. Good luck with your research.
Kind regards
Louis van Rooyen
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