Reactive softener is not so used softener as cationic and nonionic softener. It is applicable to all fibers and it gives permanent finish to the textile materials.
Properties of Reactive Softener: The properties of reactive softener are given below.
- Reactive softener can be applying on all types of fibers.
- Reactive softener reacts with –OH group of cellulose and form covalent bond and gives permanent finish.
- Its washing fastness is good.
- It is soluble in water.
- After application, it needs to cure.
Methods of application: Pad – dry- calender method is used to apply the reactive softener. This could be done as the follow. It is a sample application parameter.
Reactive softener : 25 – 30 g/l
Temperature : 900C
Curing : 1400 – 1500 C
Time : 4 – 5 minutes
Advantages and Disadvantages of Reactive Softener: Advantages and disadvantages of reactive softener are given below.
Advantages of Reactive Softener:
- The softening effect of reactive softener is durable.
- It does not cause yellowing problem.
- In case of resin finished fabrics, it minimizes the loss in tensile strength, tear strength and abrasion resistance.
- Application is easy.
Disadvantages of Reactive Softener:
- The reactive softener is comparatively costly than other softener.
So, from the above, we see that, reactive softener is reliable to apply to all kinds of fibers but it is more costly than other softening agents.
Amphoteric softener and silicon softener are not widely used. Silicon softener is the latest types of softener.
Properties of Amphoteric Softener: These molecules consist of one or longer alkyl chains attached to polar molecules which contains both anionic and cationic groups. Their nature depends on PH.
Neutral PH: No ionic
Lower PH: Cationic
Higher PH: Anionic
Properties of Silicon Softener: The uses of silicon softener are given below.
- Silicon softener is a latest softener and it is used for bulky effect in high quality cotton towel.
- Silicon softener is expensive.
- It is very durable in laundering.
- Silicon softener improves tear strength, wrinkle recovery.
Although this two softener is not popular to all but day by day the application of silicon softener is increasing rapidly.
Nonionic softener is widely used on synthetic fibers and their blends. It is compatible to use for synthetic fibers.
Properties of Nonionic Softener: The Properties of nonionic softener are given below.
- Nonionic softener is applied to synthetic fibers and their blends.
- It is fairly soluble in water.
- Its color is like creamy paste.
- Hot water should not used during the application of nonionic softener.
- Acetic acid is added to cold water before adding the softener.
- Nonionic softener is chemically fatty acid, ethylene oxide condensates etc.
Methods of Application: Nonionic softener is used on fiber by the following way.
- Pad – dry – calender method
- Exhaust Method
Advantages and Disadvantages of Nonionic Softener: The advantages and disadvantages of nonionic softener are given below.
Advantages of Nonionic Softener:
- Nonionic softener is compatible with cationic, anionic agents, starch and resin.
- It does not create yellowish problems.
- It is applicable for all types of fibers.
- Nonionic softener can be applied in both exhaust and padding processes.
- It is compatible with silicon and cationic products used in finishing formulation.
- It does not influence on dyeing fastness.
- When treated fibers are heated it does not become yellow.
- Nonionic softener does not influence dye fastness.
- It does not irritate human skin.
- It is suitable for cheese dyeing process.
- It provides bulky and heavy feel.
- It keeps fabric low yellowing.
Disadvantages of Nonionic Softener:
- Nonionic softener gives temporary soft feel.
- It is comparatively costly then other softener.
- Not easily soluble in water.
So, when you will choose the softener, you have to consider the effect of that’s softener to the textile materials.