Abstract:
Increasing global energy crisis and scarcity of petroleum resources has shifted
focus of chemical industries to look for alternative raw material resources.
The main focus of raw materials in wood adhesives, such as petroleum and
natural gas [1] [2], would be gradually replaced by renewable biopolymers.
Starch is a relatively inexpensive and renewable product from abundant
plants, easy processing and it has been extensively used as binders, sizing materials,
glues and pastes [3], but its bonding capacity is not strong enough to
glue wood [4]. Extensive research has been carried out on improving the cohesive
properties, especially water resistance, of starch-based adhesives. In
starch-based wood adhesive many new approaches have come forward for effective
use it in wood/wood composite adhesive giving comparable performance
as synthetic adhesives. This review of starch-based adhesives is made
with the focus on starch modification methods for improving properties of
starch-based adhesives.
