SSCE HSC Chemistry Polymers: Name the type of polymerisation

Name the type of polymerisation shown in the following reaction: $n HO-C(=O)-C-OH + n HO-CH_2-CH_2-OH \rightarrow [O-C(=O)-C-O- (CH_2-CH_2-O)_n] + H_2O$ Assess current developments in the use of biopolymers. - HSC - SSCE Chemistry - Question 18 - 2002 - Paper 1

Question 18

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Name the type of polymerisation shown in the following reaction: $n HO-C(=O)-C-OH + n HO-CH_2-CH_2-OH \rightarrow [O-C(=O)-C-O- (CH_2-CH_2-O)_n] + H_2O$ Assess cur... show full transcript

Worked Solution & Example Answer:Name the type of polymerisation shown in the following reaction: $n HO-C(=O)-C-OH + n HO-CH_2-CH_2-OH \rightarrow [O-C(=O)-C-O- (CH_2-CH_2-O)_n] + H_2O$ Assess current developments in the use of biopolymers. - HSC - SSCE Chemistry - Question 18 - 2002 - Paper 1

Step 1

Name the type of polymerisation shown in the following reaction:

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Answer

The type of polymerisation shown in the reaction is called condensation polymerization. This process involves the reaction between monomers that contain functional groups, resulting in the formation of a polymer and the release of a small molecule, such as water.

Step 2

Assess current developments in the use of biopolymers.

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Answer

Recent developments in the use of biopolymers have been significant, especially in the context of sustainability and environmental impact. Here are a few key areas of focus:

1. Biodegradable Plastics

Biopolymers such as polylactic acid (PLA) and polyhydroxyalkanoates (PHA) are being developed as alternatives to traditional plastics. These materials not only reduce plastic waste but also decompose more easily in natural environments.

2. Medical Applications

Biopolymers are increasingly used in medical devices and tissue engineering. For instance, materials derived from chitosan (a biopolymer from crustacean shells) are being explored for wound dressings due to their biocompatibility and antibacterial properties.

3. Food Packaging

Developments in biopolymers have also led to advancements in food packaging. Edible films and coatings made from biopolymers can enhance food shelf life while reducing plastic use.

4. Research and Innovation

There is ongoing research into the use of biopolymers derived from renewable resources, such as algae and agricultural by-products. This research aims to enhance the properties of these materials while making them more cost-effective.

5. Challenges and Future Directions

Despite the benefits, challenges remain in scalability and the performance of biopolymers compared to conventional polymers. Continued innovation and investment are essential to overcome these hurdles and promote wider adoption.