Abstract
The first example of ionic molecular composites, i.e. the formation of rigid-rod molecular composites via ionic interactions between the polyelectrolyte host and the reinforcing rigid-rod polymer, was provided by the physical blend of poly(2-acrylamido-2-methylpropanesulphonic acid) (HAMPS homopolymer) and poly( p-phenylene benzobisthiazole) (PBZT). HAMPS homopolymer was formed in situ from its sodium salt form (NaAMPS), which is commercially available. A 52 48 ( w/ w) PBZT/HAMPS homopolymer blend was prepared by co-dissolving the components in methanesulphonic acid. Upon precipitation in cold water, the molecular composite was obtained as an orange-yellow fibre, which became red when it was dry. This solid-state chromatic variability is reversible and was observed when the blend (polymer pulp or coagulated film) was immersed in a variety of organic solvents. In addition, coagulated film showed relatively little lateral shrinkage after vacuum drying at 110°C overnight and no phase-separated morphology was detected by scanning electron microscopy within 500 Å resolution.
Sign-in/Register to access full text options 
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.
