Source: Fibre2Fashion
Even as new yarn is developed, one that merits looking at is cotton-rich poly (lactic acid) fibre. The fibres are blended together in certain proportions so that the final product has all the positive attributes, say R. Guruprasad, G. Krishna Prasad, G.T.V. Prabu and T. Senthilkumar.
There is no perfect fibre that can impart all desirable properties required. So, cotton is generally blended with other fibres like polyester, viscose or acrylic to produce blended yarn and fabric meeting different requirements.