Raft crystals of poly(isoprene)-block-poly(ferrocenyldimethylsilane) and their surface wetting behavior during melting as observed by AFM and NanoTA
作者： Joost Duvigneau , Edit Kutnyanszky , In Yee Phang , Hong-Jing Chung , Hairong Wu
DOI: 10.1016/J.POLYMER.2014.04.021
关键词:
摘要: We report on the morphology evolution during heating and melting of lamellar poly(isoprene)-block-poly(ferrocenyldimethylsilane) (PI76-b-PFDMS76) raft crystals deposited at native oxide surface silicon (SiO2) or a highly ordered pyrolytic graphite (HOPG) surface, studied by in situ temperature controlled atomic force microscopy. Crystals hydrophilic SiO2 surfaces revealed an irreversible decrease length temperatures up to tens degrees above their expected temperature, while maintaining platelet-like structure. hydrophobic HOPG initially decreased below 120 °C typical molten was observed. In addition, formation PI76-b-PFDMS76 wetting layer around observed upon increasing temperature. These observations morphological behavior emphasize role interfacial energy between block copolymer based macromolecular nanostructure its supporting substrate.
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