- Source: Swelling capacity
The swelling capacity of a polymer is the amount of a liquid that can be absorbed by it. This test can done by two methods:
Beaker test method
Tea bag test method
Beaker test method
In this method
A small amount of superabsorbent polymer material is taken (0.1g) and it is placed in the beaker.
100 ml of deionized water is poured into the beaker.
After 20 min the swollen polymer was separated by using [filter paper]
By weighing the polymer, one can find the swollen capacity of the SAP material.
Tea bag test method
In this method, 0.1 g of SAP material is placed into a permeable bag, which is suspended over excess water in a beaker.
Wait 20 min. and weigh the bag and then calculate the percentage of swelling through the following formula:
(w2-w1)/(w1) %
w1= weight of the polymer (Before swelling)
w2= weight of the polymer (After swelling)
Note: Filter paper only for removing water.
References
Kata Kunci Pencarian:
- Baterai kawat nano
- Swelling capacity
- Swelling
- Mucus
- Swelling index
- Bentonite
- Superabsorbent polymer
- Smectite
- Starch gelatinization
- Microcrystalline cellulose
- Ion exchange
