Introduction to Paper-Making
Paper is a versatile material used for writing, printing, and packaging. Its primary natural source is wood, which is processed to create sheets of paper.
Why Wood is Used
- Cellulose Content: Wood contains cellulose, a fibrous substance that gives paper its strength. Cellulose fibers can be broken down and reformed into a flat sheet.
- Abundance: Trees are widely available, making wood an abundant resource. Various tree species, including softwoods (like pine) and hardwoods (like birch and oak), are utilized in paper production.
- Processing: The process of turning wood into paper involves:
- Chipping wood into small pieces
- Cooking the chips with chemicals to break down lignin (the substance that binds fibers together)
- Bleaching to achieve the desired color and brightness
- Forming sheets of cellulose fibers and drying them
Alternative Sources
While wood is the primary material, paper can also be made from other plant fibers, such as cotton, hemp, and bamboo. However, wood pulp remains the most common due to its cost-effectiveness and availability.
Conclusion
In summary, wood is the correct answer for the natural material used to make paper. Its cellulose content, abundance, and the efficient processing methods contribute to its widespread use in the paper industry.