Difference Between Amorphous Polymers and Crystalline Polymers

The main difference between amorphous polymers and crystalline polymers is that amorphous polymers are named for polymers that do not have uniformly packed molecules while crystalline polymers are named for polymers that have uniformly packed molecules.

Amorphous vs. Crystalline Polymers

Amorphous polymers are the polymers that do not have uniformly packed molecules while crystalline polymers are the polymers that have uniformly packed molecules. Amorphous polymers have molecules that are randomly arranged that refer to the amorphous regions, while crystalline polymers have molecules that are arranged in definite patterns that refer to the crystalline regions. Amorphous polymers do not have definite or sharp melting points while crystalline polymers have definite and sharp melting points. Amorphous polymers are usually transparent and clear, while crystalline polymers are usually translucent or opaque. Amorphous polymers tend to have less chemical resistance, while crystalline polymers usually have high chemical resistance. Amorphous polymers are usually soft, while crystalline polymers are usually hard. Amorphous polymers are usually very low in energy, while crystalline polymers are usually very high in energy. Amorphous polymers typically have very high gas permeability, while crystalline polymers typically have very low gas permeability. Amorphous polymers usually have a low shrinkage capacity, while crystalline amorphous polymers usually have a high shrinkage capacity. while crystalline polymers usually have a very high energy. Amorphous polymers typically have very high gas permeability, while crystalline polymers typically have very low gas permeability. Amorphous polymers usually have a low shrinkage capacity, while crystalline amorphous polymers usually have a high shrinkage capacity. while crystalline polymers usually have a very high energy. Amorphous polymers typically have very high gas permeability, while crystalline polymers typically have very low gas permeability. Amorphous polymers usually have a low shrinkage capacity, while crystalline amorphous polymers usually have a high shrinkage capacity.

Comparison chart

What are amorphous polymers?

Amorphous polymers are the polymers that have molecules that are arranged in a random manner referring to the amorphous region. Amorphous polymers generally do not have packed molecules. Amorphous polymers also do not possess sharp and defined melting points. Amorphous polymers are usually clear, obvious, and transparent. Amorphous polymers always have a low shrinkage capacity. Amorphous polymers tend to have less chemical resistance. They are soft and have very little energy to melt. They also have a very high gas permeability. Due to the difference in structure, amorphous polymers usually have very distinct and different physical and mechanical properties. Amorphous polymers are very brittle, hard, and glassy. Amorphous polymers always show elastic properties and also form crosslinks. Amorphous polymers are generally soft due to long-range coordination. The behavior of amorphous polymers is that they soften slowly as the temperature increases. Amorphous polymers have less dimensional stability and can be easily deformed. Amorphous polymers are resistant to low temperatures. It usually has the ability to slide. Amorphous polymers typically have low heat resistance. The degree of order in the structure of amorphous polymers is random. This structure gives amorphous polymers extra stability or different physical and mechanical properties. The structure of amorphous polymers is atactic. Amorphous polymers also have elasticity and flexibility. Amorphous polymers may also contain some areas or portions of crystallinity. Amorphous polymers tend to have a less clear appearance, so they also cannot reflect light.

Example

Natural rubber latex, styrene-butadiene rubber, etc.

What are crystalline polymers?

Crystalline polymers are the polymers that have molecules that are arranged in a regular manner referring to the crystalline regions or portions. Crystalline polymers usually have packed molecules. Crystalline polymers also have sharp and defined melting points. Crystalline polymers are always translucent and opaque. Crystalline polymers have a very high shrinkability. Crystalline polymers have very high chemical resistance. They also have a very high energy to melt. They also have very low gas permeability. Due to the differences in structure, crystalline polymers have very clear, different and unique physical and mechanical polymers. Crystalline polymers always show less elastic properties and also form tight crosslinks. Crystalline polymers are very hard due to short-range coordination. Crystalline polymers have very high three-dimensional specific properties. Crystalline polymers also have high heat abrasion. The degree of order of crystalline polymers is always regular. This crystalline polymer structure provides extra stability and specific properties such as physical and mechanical properties. The structure of crystalline polymers is also known as tactic. Crystalline polymers have less elasticity and flexibility. Crystalline polymers always contain areas of crystallinity. Crystalline polymers are completely clear in appearance and have a clear appearance. This crystalline polymer structure provides extra stability and specific properties such as physical and mechanical properties. The structure of crystalline polymers is also known as tactic. Crystalline polymers have less elasticity and flexibility. Crystalline polymers always contain areas of crystallinity. Crystalline polymers are completely clear in appearance and have a clear appearance. This crystalline polymer structure provides extra stability and specific properties such as physical and mechanical properties. The structure of crystalline polymers is also known as tactic. Crystalline polymers have less elasticity and flexibility. Crystalline polymers always contain areas of crystallinity.

Example

Polyethylene, polyethylene terephthalate, etc.

Key differences

1. Amorphous polymers usually have amorphous regions, while crystalline polymers usually have crystalline regions.
2. Amorphous polymers do not have sharp, sharp melting points, while crystalline polymers have sharp, sharp melting points.
3. Amorphous polymers always have very high gas permeability, while crystalline polymers always have very low gas permeability.
4. Amorphous polymers have a very low chemical heat resistance, while crystalline polymers have a very high chemical heat resistance.
5. Amorphous polymers are usually soft, while crystalline polymers are usually hard.
6. Amorphous polymers are always very clear and transparent, while crystalline polymers are always translucent and opaque.
7. Amorphous polymers have a very low shrinkage permeability, while crystalline polymers have a very high shrinkability.
8. Amorphous polymers have high elasticity and flexibility, while crystalline polymers have very low elasticity and flexibility.
9. Amorphous polymers generally do not have packed molecules, while crystalline polymers generally do have packed molecules.

Final Thought

The above discussion concludes that both amorphous polymers and crystalline polymers are macromolecules. Amorphous polymers are the polymers that have molecules that are randomly arranged and have amorphous regions, while crystalline polymers are the polymers that have molecules that are regularly ordered and have crystalline regions.