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Published on: October 30, 2018
Sequential Esterification-Diels-Alder Reactions for Improving Pine Rosin Durability within Road Marking Paint.
Aqsha Aqsha1,2, Haryo Pandu Winoto1, Tri Partono Adhi1
1Department of Chemical Engineering, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia.
Modified pine rosin, a sustainable road marking binder, shows improved stability and performance. This enhanced natural product offers a viable alternative to conventional binders, meeting industry standards.
Area of Science:
- Materials Science
- Chemical Engineering
- Polymer Chemistry
Background:
- Pine rosin from Pinus merkusii resin is a natural product with potential as a road marking binder.
- Untreated pine rosin exhibits limitations like instability and color change, hindering its application.
Purpose of the Study:
- To develop and evaluate modified pine rosin for improved road marking binder properties.
- To address the instability and color change issues of natural pine rosin.
Main Methods:
- Sequential esterification and Diels-Alder reactions were employed to modify pine rosin.
- Evaluated acid value, color stability via oxidation tests (150 °C for 24 h), softening point, hardness, and wear resistance.
Main Results:
- Modified rosin demonstrated a lower acid value and enhanced color stability during oxidation tests.
- The modified rosin binder, blended at 18-28 wt.%, achieved a softening point of 170-210 °C and hardness of 50-71 HD.
- Weight loss in wearing tests ranged from 1.33-5.12 mg, indicating good durability.
Conclusions:
- Chemical modification significantly improves the properties of pine rosin for road marking applications.
- The enhanced rosin binder meets or exceeds the performance of commercial road marking products.
- Modified pine rosin presents a promising sustainable alternative for road marking binders.
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