Polymer Identification from Reaction Sequence

We are given a reaction sequence and need to identify the resulting polymer. Since the images cannot be displayed, we must analyze the reaction steps logically.

Step 1: Analyze the Starting Material

The reaction begins with a compound that undergoes polymerization. Based on common polymerization types, the starting material likely contains a functional group that can form a polymer chain, such as a diamine and a diacid chloride for polyamide formation, or a diol and a diacid for polyester formation.

Step 2: Identify the Type of Polymerization

The given reaction is probably a step-growth polymerization, where monomers with two functional groups react to form a polymer with the loss of a small molecule (like H $O$ or HCl). For example:

If the reaction is between a diamine and a diacid chloride, it forms a polyamide:

$n H N - R - N H + n C l - O C - R' - C O - C l \to ⟨ - N H - R - N H - C O - R' - C O - ⟩ n + 2 n H C l$

Step 3: Compare with the Given Options

The options likely show repeating units of common polymers. Without the exact images, we must recall that:

Nylon-6,6 has the repeating unit: $- N H - (CH 26 - N H - C O - (CH 24 - C O -$
Polyethylene terephthalate (PET) has: $- O - CH 22 - O - C O - C 6 H 4 - C O -$

Given the reaction involves steps that might produce a polyamide or polyester, the correct polymer is the one that matches the repeating unit from the monomers used.

Step 4: Final Answer

Based on the standard reaction, the polymer formed is likely Nylon-6,6 or a similar polyamide. Without the exact images, the correct option is the one showing the polyamide repeating unit with -NH- and -CO- groups.

Related Topics

Step-Growth Polymerization
Polyamides and Polyesters
Condensation Polymers
Nylon Synthesis

Formulae and Theory

Polymerization Reaction: For a diamine and a diacid chloride:

$n H N - (CH 26 - N H + n C l O C - (CH 24 - C O C l \to ⟨ - N H - (CH 26 - N H - C O - (CH 24 - C O - ⟩ n + 2 n H C l$

Key Points: In condensation polymerization, monomers with two functional groups react, releasing a small molecule. The degree of polymerization depends on the extent of reaction.