Abstract
A series of poly(oxyalkylene)imide grafted polypropylenes were prepared from the reaction of maleated polypropylenes and various amines. The amines included crystalline and non-crystalline block poly(oxyethylene–oxypropylene)amines of average molecular weight (Mw) from 1000 to 8000. The reactions afforded comb-like copolymers consisting of a polypropylene backbone, poly(oxyalkylene) pendants and imide linkages. Their electrostatic dissipating properties, probed by measuring surface resistivity, were correlated with the chemical functionalities. Increasing the weight amount or the decreasing crystallinity of the poly(oxyethylene) pendants lowered the polymer surface resistivity significantly from 1012 to 106.9Ω/□. In comparing the structural effect, the polypropylenes modified by low Mw of amines such as 2-aminoethanol, 1,2-ethylenediamine, N,N-dimethylaminopropylamine and their derivatives were also prepared. Factors including hydrophilicity, the presence of amine functionality or sodium ion in the structure also affected the copolymer electrostatic dissipating ability. A mechanism involving hydrogen bonding with moisture was proposed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
