Assertion: lignin's property | /r/HasProperty | xu et al
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Source sentences:
text: Reacting phenol with formaldehyde is conducted in an alkaline medium, and the process conditions (e.g., phenol-formaldehyde ratio, pH, time, and temperature) determine certain physical and chemical properties of the adhesives, such as viscosity and the overall mechanical properties of the final glued product (Xu et al.