Bioadhesive II

The most extensively used adhesive in plywood and particleboard is ____.

• UF

• MUF

• PF

• Epoxy

What are the main properties of petrochemical adhesives?

• Low bonding properties

• Excellent bonding properties

• Weak board strength

• High VOC emissions

Research and development of adhesives are focusing on replacing those based on ____.

• Petrochemicals

• Bioadhesives

• Formaldehyde

• VOCs

The emission value of formaldehyde to air is ____.

• 78.4x10^{-3} mg/kg

What is the simplest way to use lignin in wood-based panel adhesives?

• Complete substitution of phenol

• Partial substitution of phenol

• No substitution of phenol

• Substitution of formaldehyde

What property of lignin provides high hydrophobicity and low dispersion properties?

• Aliphatic structure

• Aromatic structure

• Glyoxal structure

• Formaldehyde structure

The development of lignin-based adhesives requires previous stages of functionalization of the lignin structure through ______.

• Aromatic rings

• Aliphatic groups

• Correct more than 1 choice

• None of the above

Which industry is NOT mentioned as an application of phenolic resin?

• Aerospace industry

• Textile industry

• Particleboard manufacturing

• Electrical and lighting industry