Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (03MS606F)
Forschungskuratorium Textil, Bundesministerium für Wirtschaft und Energie (IGF 17629 N)
Article History
Received: 12 February 2018
Accepted: 27 November 2018
First Online: 4 December 2018
Competing interests
: The authors declare that they have no competing interests.