Adding more liquid starch to recycled paper pulp makes the finished recycled paper stronger as the liquid starch bonds the paper fibres together and acts as a glue to help prevent the paper from falling apart when drying and when dried.
5.1 Practical Applications
When making recycled paper, adding liquid starch is a cheap and fairly easy method to make the recycled paper stronger and more durable to attract more people to want to use it. This way, less computer paper would be used and less trees would have to be chopped down to be made into paper, which will decrease the rate of Global Warming.
5.2 Areas for further study
What exactly does the starch do to the paper pulp?
Are there other materials we can use to strengthen recycled paper?
How else can we encourage more people to use recycled paper?