Styrene Maleic Anhydride - Bond Angles and Lengths

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In summary, the conversation discusses the research on the bond lengths and angles of Styrene Maleic Anhydride, a tricky polymer with limited information online. The bond angles inside the benzene are 120 degrees, and the Carbon attached to the benzene ring attaches at a 120 degree angle. The conversation also mentions the possibility of copolymerization and the disruption of the regular polymer coil by maleic anhydride.
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TheHumblePoet
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Styrene Maleic Anhydride is a tricky polymer that I've been researching over the last few days. There is very little information online, and I've been trying to figure out the bond lengths and angles.

I know the bond angles inside the benzene are 120 degrees, and the Carbon attached to the benzene ring attaches at a 120 degree angle, but what of the anhydride ring, or the other carbons? Much appreciated.
 
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Styrene and maleic anhydride can be copolymerized in a number of ways that greatly change the resulting polymer.

Random polymerization by radical mechanisms is probably the most common, and takes place in head to tail fashion, predominately about the alkene double bonds, to make the sp3 bonded carbons. Try visualizing the styrene polymer, first and then see how one maleic anhydride can disrupt that regular polymer coil.
 

1. What is the chemical structure of Styrene Maleic Anhydride (SMA)?

The chemical structure of SMA is a copolymer consisting of alternating units of styrene and maleic anhydride. The styrene units have a benzene ring and a vinyl group, while the maleic anhydride units have a cyclic anhydride group.

2. What are the bond angles in SMA?

The bond angles in SMA vary depending on the type of bond present. The C-C bond angle in the styrene unit is approximately 120 degrees, while the C=C bond angle is around 135 degrees. The C-O-C bond angle in the maleic anhydride unit is approximately 109.5 degrees.

3. How do the bond lengths in SMA compare to other polymers?

The bond lengths in SMA are relatively short compared to other polymers due to the presence of the double bonds in both the styrene and maleic anhydride units. This leads to a higher degree of conjugation and shorter bond lengths.

4. What factors influence the bond angles and lengths in SMA?

The bond angles and lengths in SMA are influenced by factors such as the size and electronegativity of the atoms involved, the degree of conjugation, and the presence of any steric hindrance. The type of polymerization process used can also affect the bond angles and lengths.

5. How do changes in bond angles and lengths affect the properties of SMA?

Changes in bond angles and lengths can affect the physical and chemical properties of SMA. For example, shorter bond lengths and increased conjugation can lead to a more rigid and stronger polymer, while changes in bond angles can affect the flexibility and solubility of the polymer. These factors can also impact the overall performance and applications of SMA in various industries.

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