Preparation and characterization of clay-polymer nanocomposite having covalentlybound poly(norbornenes) with pendant cholesterols

• Main Authors: Penaloza, David Penuliar, Jr., Seery, Thomas Andrew Patrick
• Format: text
• Published: Animo Repository 2019
• Subjects: Polymer liquid crystals; Nanocomposites (Materials); Chemistry
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/414; https://animorepository.dlsu.edu.ph/context/faculty_research/article/1413/type/native/viewcontent
• Institution: De La Salle University

We have successfully prepared a clay-based polymer nanocomposite having grown cholesterol bearing poly(norbornene) brushes end-tethered from a naturally-occurring montmorillonite clay template. The synthesis of this hybrid material involved the treatment of the clay with first generation Grubbs catalyst, a ruthenium alkylidene, which induced a ring-opening metathesis and subsequent surface initiated polymerization of the cholesterol bearing monomer. This results in an inorganic/organic hybrid functional nanomaterial where the inclusion of the clay particles in a liquid crystalline domain modifies the thermal transitions. © 2019 Universidade Federal de Sao Carlos. All Rights Reserved.