Malaysian Journal of Analytical Sciences Vol 26 No 4 (2022): 708 - 717

 

 

 

 

FORMULATION OF HIGH-QUALITY UV-CURABLE COATING CONTAINING RENEWABLE REACTIVE DILUENTS FOR WOOD PROTECTION

 

(Formulasi Salutan Awetan-UV Berkualiti Tinggi yang Mengandungi Diluen Reaktif  yang Boleh Diperbaharui untuk Perlindungan Kayu)

 

Noraini Abd Ghani^1,2,3, Emilia Abdulmalek^1,2, Rajni Hatti-Kaul⁴, Azren Aida Asmawi^1,2, Mohd Basyaruddin Abdul Rahman^1,2*

 

¹Integrated Chemical BioPhysics Research, Faculty of Science

²Department of Chemistry, Faculty of Science

 Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

³Department of Fundamental and Applied Sciences, Faculty of Science and Information Technology,

Universiti Teknologi PETRONAS, 32610, Perak, Malaysia

⁴Department of Biotechnology, Center for Chemistry and Chemical Engineering,

Lund University, P.O. Box 124, SE-221 00 Lund, Sweden

 

*Corresponding author: basya@upm.edu.my

 

 

Received: 29 November 2021; Accepted: 23 April 2022; Published:  25 August 2022

 

 

Abstract

Fine quality coating materials for a variety of surfaces using environmentally friendly substrates are continuously in demand. A large proportion of acrylate derivatives, which are toxic and hazardous, were found in most of the coating formulations. Many efforts have been done to replace acrylate derivatives with other materials derived from renewable resources. In this work, several formulations of wood coating containing different composition of epoxy acrylate and enzymatically synthesized epoxide from soybean oil or wax esters mixture of dioleyl adipate and 1,5-pentanediol diricinoleate were prepared. The formulations were subjected to performance evaluations including gel content, pendulum hardness, and surface test. Formulation 1 containing 85% epoxy acrylate and 15% epoxidation from soybean oil exhibited the highest gel content (79.5%), pendulum hardness (61.02%) and surface resistance to different types of liquid. Increase in surface resistance was observed using a formulation containing 85% epoxy acrylate and a mixture of 1,5-pentanediol diricinoleate and dioleyl adipate (1:1, w/w; 15%). Therefore, these reduced acrylate formulations showed good potential in the development of high-quality UV-curable wood coating.

 

Keywords:  coating, acrylate, epoxide, ester, ricinoleate

 

Abstrak

Bahan salutan yang berkualiti untuk pelbagai permukaan menggunakan substrat mesra alam sentiasa mendapat permintaan. Sebilangan besar derivatif akrilat, yang beracun dan berbahaya, ditemui dalam kebanyakan rumusan salutan. Pelbagai usaha telah dilakukan untuk menggantikan derivatif akrilat dengan bahan lain yang diperoleh daripada sumber yang boleh diperbaharui. Dalam kajian ini, beberapa formulasi salutan kayu yang mengandungi komposisi epoksi akrilat dan epoksida yang disintesis secara enzimatik daripada minyak kacang soya atau campuran ester lilin dioleil adipate dan 1,5-pentanediol dirisinoleate yang berbeza telah disediakan. Formulasi ini tertakluk kepada penilaian prestasi termasuk kandungan gel, kekerasan pendulum, dan ujian permukaan. Formulasi 1 yang mengandungi 85% epoksi akrilik dan 15% epoksida dari minyak kacang soya menunjukan kandungan gel (79.5%), kekerasan pendulum (61.02%) dan rintangan permukaan terhadap pelbagai jenis cecair yang tertinggi. Selain itu, peningkatan terhadap rintangan permukaan diperhatikan menggunakan formulasi yang mengandungi 85% epoksi akrilik dan campuran dioleil adipate dan 1,5-pentanediol dirisinoleate (1:1, w/w; 15%). Oleh itu, formulasi akrilat yang dikurangkan ini menunjukan potensi yang baik dalam pembangunan salutan kayu awetan-UV yang berkualiti tinggi.

 

Kata kunci:  salutan, akrilat, epoksida, ester, risinoleate

 

Graphical Abstract

 

 

 

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