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branched polymer
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Figure 1: Three common polymer structures. The linear, branched, and network architectures are represented (from top), respectively, by high-density polyethylene (HDPE), low-density polyethylene (LDPE), and phenol formaldehyde (PF). The chemical structure and molecular structure of highlighted regions are also shown.
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branched polymer

chemistry
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Figure 1: Three common polymer structures. The linear, branched, and network architectures are represented (from top), respectively, by high-density polyethylene (HDPE), low-density polyethylene (LDPE), and phenol formaldehyde (PF). The chemical structure and molecular structure of highlighted regions are also shown.
Figure 1: Three common polymer structures. The linear, branched, and network architectures are represented (from top), respectively, by high-density polyethylene (HDPE), low-density polyethylene (LDPE), and phenol formaldehyde (PF). The chemical structure and molecular structure of highlighted regions are also shown.

A branched polymer is a type of macromolecule formed when shorter chains grow off a main polymer chain at various intervals. This structure differs from linear polymers, which are simple chain-like molecules, and network polymers, where branches extensively cross-link to form a complex, interconnected structure.12

The branching in polymers affects their physical properties. For instance, low-density polyethylene (LDPE), a branched polymer, is flexible and commonly used for packaging film. This flexibility arises because branched molecules cannot pack as closely together as linear molecules, resulting in weaker intermolecular forces. In contrast, linear high-density polyethylene (HDPE) is tougher and used for objects like bottles and toys. Branched polymers can also dissolve in suitable solvents, unlike network polymers which do not readily dissolve.21

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4 Britannica Sources
  1. chemistry of industrial polymers - Linear, branched, and network
  2. man-made fibre - Linear, branched, and network polymers
  3. chemistry of industrial polymers - Free- radical initiation
  4. chemistry of industrial polymers - Step-growth polymerization

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