**6. Scope for future work**

It is necessary to standardize experiments with reference to several process parameters such as pressure, flow rates, power etc for each type of fabrics. Further the type and structure of dye molecule should also be considered. Surface analysis in terms of morphology, radical formation, bond formation and its lifetime need to be understood. This understanding may help in deciding about the importance of plasma process if enhanced dye uptake is the aim. Even if the increase is small, if the process can lead to sufficient dye uptake at a reduced temperature or time, it would serve a good purpose. Advantages of the process in terms of eco-friendliness, water saving and energy saving be explored and emphasized so that the technology is acceptable to all.

Further work needs to be carried out by using pulsed plasma as it may avoid the degradation of fabrics when subjected to longer durations of treatments. In-situ cooling of the samples is also desirable to maintain the temperature of substrate constant. It is also necessary to find the electron and ion densities or rather the number of ions hitting the sample to calculate the energy deposited during processing.
