I cannot help you with textile fiber applications, but for many PP you can find the material properties and process conditions on:

http://www.campusplastics.com/

The amount of open accessible data varies with PP supplier

PP has significant uses in fiber for twine and rope applications and for carpeting. It can be pigmented but it is not dyeable which limits its use somehow. It is easily affected by UV. The government of India sponsored a huge online technology and learning system. NPTEL, It has a very extensive section in textile engineering and fibers

Hi,

you can read

Chap 10 in "Handbook of Tensile Properties of Textile and Technical Fibres"

A volume in Woodhead Publishing Series in TextilesEdited by:A.R. Bunsell

ISBN: 978-1-84569-387-9

(a new edition will be released soon)

regards

E.

The main  fields of application of fibers, fibrous and other PP-based

textile materials are the following: carpets, underlays, rugs, hygiene

textile products, tapes, ropes, clothing (home, sport, children's protective),

geotextiles and agrotextiles, wraps and big bags, technical

textiles (filter and separation materials for the car industry, for composites

manufacturing, for enviromental-ECO textiles), textiles for medicine

and others.