Biodegradable polymers + Elastomers

Question 1

Describe the factors of Bio-batch additives (Bio Batch)

Answer 1

(Front picture looks like a weed leaf)
Uses:
- Can be used for, carrier bags, plastic bottles and detergent.
Factors:
> Not a plastic it is added.
> Just 1% added will render majority of polymers 100% biodegradable
> Degrades within 1-5 year.
>Relatively expensive
> Can only be added to Thermo Plastics
> Not much use for products to degrade
> Can be used for, carrier bags, plastic bottles and detergent.

Question 2

Describe the factors of Biopol or PLA (Polyactide)

Answer 2

Uses:
- Medical implants
- Screws, pins, plates etc. 
Factors:
> Often use in place of ABS
> Breaks down in 6 months
> Can be soft like LDPE
> Cellulose based (most organic polymer on Earth)
> Degrades within 6 months
Injection moulding or Calendared

Question 3

Describe the factors of Lactel

Answer 3

Uses:
- Slow release medical medication (e.g Paracetamol plastic casing)
- Dishwasher capsules 
Factors:
> Absorbable water soluble polymer 
> Breaks down in minutes

Question 4

Describe the factors of TPE (Thermo Plastic Elastomer)

Answer 4

Uses:
- Ergonomic overmoulded on handles
- Toothbrush handles
- Product Grips
- Electric drills 
Factors:
> Squashed down
> Flexible
> Generic properties 
> Overmoulding products
> Linked to themselves 
> THERMO PLASTIC
Injection moulded

Question 5

Describe the factors of LSR (Liquid Silicone Rubber)

Answer 5

Uses:
- Cook ware
- Baby bottle teats
Factors:
> Difficult to melt 
> Can be stretched and pulled apart
> THERMOSET 
Injection Moulded