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Chapter 26: Q15P (page 1335)

Glyptal®resin makes a strong, solid polymer matrix for electronic parts. Glyptal is made from terephthalic acid and glycerol. Draw the structure of Glyptal and explain its remarkable strength and rigidity.

Short Answer

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Glyptal

Glyptal is a cross-linked polymer, thus, it posses good rigidity and strength.

Step by step solution

01

Step-1. Glyptal:

Glyptal is highly cross-linked thermosetting polymer which is produced by heating glycerol and phthalic anhydride. Glyptal is used in binding materials and cements. The properties of glyptal polymer changes once it is crosslinked and it becomes irreversibly hardened.

02

Step-2. Structure of Glyptal:

Glycerol is trifunctional in nature, thus it grows in three directions to make a chain. All of its chains are cross-linked which forms a three-dimensional lattice with very little motion possible. The more cross-linked the polymer is, more will be its rigidity. Due to more cross-linking in glyptal, it posses remarkable rigidity and strength.

Glyptal

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