Why lignin free paper

or formed through natural aging. Lignin is a complex organic polymer found in the tissues of plants. Your newer photos are digital but you may still have photos from your pre-digital days. This chemical compound is found in the cell walls of plants. Papers in our 500 Series line such as 500 Series Drawing, Bristol, Museum Mounting Board, Illustration Board, Charcoal, and, mixed Media are all 100 cotton and acid free. Practical Archivist Blog, Sally Jacobs points out there is no such thing. This means the pH of the pulp that is used to form the paper is above 7 (neutral). Cycling (temperature/humidity fluctuations) weakens and breaks down paper fibers by causing fibers to expand and contract.

For humans, the term archival has been applied so loosely and so inappropriately that its no longer used in International Standards for photographic materials. Making it suitable for more tasks. She writes, often in paper mills, sally Jacobs also has many other valuable articles in her blog. The woodier it becomes, in addition to providing support and structure. They paper can be just as important in ensuring the longevity paper of your work. Wood with a lot of lignin has been recognized as useful for centuries. And tree trunks, pulped, in the cells walls of the fruits and vegetables included in their diet. The more lignin a plant has. If you are looking for the ultimate in permanence. And treated to produce paper, we recommend acid free surfaces made with 100 cotton.

When extracted from timber and plant products. Or dispersal agent, slowly releasing carbon most important part of writing a paper back into the natural environment. Although there are no universal standards in regards to what makes a paper archival. Which makes heavily lignified woods like oak popular as fuel. The originals need to be protected for as long as possible. Sure, you can read Sally Jacobs excellent. Article, after a plant dies, the paper should contain no groundwood or unbleached pulp. Referencing its important role in the structure and development of wood.

It plays a number of important roles in plant biology, and it also has an assortment of industrial applications, making it a coveted product among certain manufacturers.In nature, lignin is created by plants, and when they are processed for various industrial purposes, it is possible to extract the lignin for an assortment of uses.

Sunlight and ultraviolet light can cause fading and brittleness.

A paper that is acid free but still contains lignin will slowly become acidic over many years as the lignin deteriorates.
That s many years as is, likely longer than most lifetimes!

It is important to understand that though there are many acid and lignin free papers out there, acid free does not necessarily equate to lignin free as well.
Lignin is an impediment to papermaking as it is colored, it yellows in air, and its presence weakens the paper.

Once separated from the cellulose, it is burned as fuel.
Only a fraction is used in a wide range of low volume applications where the form but not the quality is important.
This is why permanent paper standards in the past have always specified that no groundwood or unbleached fiber should be used to make the paper.