Alagar Muthukaruppan (2025) Development of tertiary butyl hydroquinone based polybenzoxazine for effective anti-microbial and anti-corrosion coating applications. Development of tertiary butyl hydroquinone based polybenzoxazine for effective anti-microbial and anti-corrosion coating applications, 8: 100723. pp. 1-12. ISSN 2949-8228

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Abstract

The work presents a new type of polybenzoxazines synthesised using tertiary butyl hydroquinone (THQ) with
aromatic and fluorinated mono functional amines such as aniline (a), ethynylaniline (ea), cyanoaniline (ca),
f
luoroaniline (fa), trifluoromethylaniline (tfma) and 4-fluorotrifluoromethylaniline (4ftma). The structure of the
benzoxazines were elucidated using spectroscopyic technique. The curing behaviour, thermal stability of the
THQ polybenzoxazines were studied in order to assess their performance in high themperature environments.
Among the six polybenzoxazines synthesized, the tert-butyl hydroquinone with cyanoaniline based poly
benzoxazine shows the exceptional thermal stability with higher residual value of 60 % and higher degradation
temperature of 553
◦
C. The moisture resistance behaviour of the synthesized THQ polybenzoxazines have been
studied and all the THQ polybenzoxazines possess excellent hydrophobicity. The synthesized THQ poly
benzoxazines were tested for their surface protection efficiency as anti-corrosive coatings on mild steel surfaces.
The poly(THQ-4ftma) polybenzoxazine coating exhibits excellent corrosion resistant behaviour with efficiency of
99.99 %. All the six THQ polybenzoxazine coated mild steel specimen shows better corrosion resistant behaviour
than that of the uncoated mild steel. In addition to the above, THQ benzoxazines were checked for their anti
bacterial activity (against S. aureus and E.coli) was checked and inhibition zone was observed at greater than
25 mm. The results obtained from different studies indicate that the tert-butyl hydroquinone based benzoxazines
can be effectively used as a multifunctional coatings under high thermal environment and protection against
microbes including adverse corrosive environment.

Item Type: Article
Uncontrolled Keywords: Tertiary butyl hydroquionone Polybenzoxazine Anticorrosion coatings Thermal stability Antimicrobial activity The work presents a new type of polybenzoxazines synthesised using tertiary butyl hydroquinone (THQ) with aromatic and fluorinated mono functional amines such as aniline (a), ethynylaniline (ea), cyanoaniline (ca), f luoroaniline (fa), trifluoromethylaniline (tfma) and 4-fluorotrifluoromethylaniline (4ftma). The structure of the benzoxazines were elucidated using spectroscopyic technique. The curing behaviour, thermal stability of the THQ polybenzoxazines were studied in order to assess their performance in high themperature environments. Among the six polybenzoxazines synthesized, the tert-butyl hydroquinone with cyanoaniline based poly benzoxazine shows the exceptional thermal stability with higher residual value of 60 % and higher degradation
Divisions: PSG College of Arts and Science > Department of Chemistry
Depositing User: Dr. B Sivakumar
Date Deposited: 30 Oct 2025 06:47
Last Modified: 30 Oct 2025 06:47
URI: https://ir.psgcas.ac.in/id/eprint/2476

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