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Chapter 30: Question 30.35 (page 1226)

Draw the structure of the three monomers used to prepare polybutyrateadipate terephthalate (PBAT), a biodegradable copolymer sold under the trade name of Ecoflex. Because PBAT has properties similar to low-density polyethylene, it can be used in biodegradable food packaging and plastic bags.

PBAT

Short Answer

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Answer

The polymer polybutyrateadipate terephthalate(PBAT) consists mainly of three monomers - adipic acid, 1,4-butanediol, and terephthalic acid.

Step by step solution

01

Adipic acid

The compound adipic acid acts as an essential monomer in making polymers like polyurethanes, nylon 6-6, PBAT, etc.

The structure of adipic acid is as shown below:

Structure of adipic acid

02

1,4-butanediol

The monomer 1,4-butanediol is an essential monomer in making polymers like polyethylene, spandex fibers, etc.The structure of 1,4-butanediol is as shown:

03

Terephthalic acid(PTA)

The monomer terephthalic acid is an essential monomer in making polyester resins. The structure of PTA is as shown:

Structure of terephthalic Acid

04

Polybutyrateadipate terephthalate (PBAT)

The polymer PBAT, a biopolymer, has adipic acid, 1,4-butanediol, and terephthalic acid as monomer units.

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