Accepted Manuscript Arginine-based cationic surfactants: Biodegradable auxiliary agents for the for- mation of hydrophobic ion pairs with hydrophilic macromolecular drugs Iram Shahzadi, Mulazim Hussain Asim, Aida Dizdarević, Julian Dominik Wolf, Markus Kurpiers, Barbara Matuszczak, Andreas Bernkop-Schnürch PII: S0021-9797(19)30613-7 DOI: https://doi.org/10.1016/j.jcis.2019.05.057 Reference: YJCIS 24986 To appear in: Journal of Colloid and Interface Science Received Date: 17 April 2019 Revised Date: 17 May 2019 Accepted Date: 18 May 2019 Please cite this article as: I. Shahzadi, M. Hussain Asim, A. Dizdarević, J. Dominik Wolf, M. Kurpiers, B. Matuszczak, A. Bernkop-Schnürch, Arginine-based cationic surfactants: Biodegradable auxiliary agents for the formation of hydrophobic ion pairs with hydrophilic macromolecular drugs, Journal of Colloid and Interface Science (2019), doi: https://doi.org/10.1016/j.jcis.2019.05.057 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.