Morphology Control of Highly Sulfonated Block Copolymers by a Simple Thermal Process

다국어 초록 (Multilingual Abstract)

<P>Well-defined sulfonated block copolymers were prepared by direct thermolysis with block copolymers of n-butyl acrylate (nBA) and neopentyl styrene sulfonated (NSS), which were synthesized by Cu-based living radical polymerization (<TEX>$\overline M _{\rm w} /\overline M _{\rm n}$</TEX> <1.20). A simple thermal process for 10 min at 150 °C completely deprotected the neopentyl groups in the poly(NSS) block segment to give fully sulfonated polystyrene backbone. SAXS profile of the block copolymer with 47 wt.-% of poly(NSS) showed lamella structure, which appeared more clearly with long ranged order after sulfonation of the block copolymer.</P><P>
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<B>Graphic Abstract</B>
<P>Well-defined lamellar structures comprising 100% sulfonated polystyrene and poly(n-butyl acrylate) were directly achieved by a simple heating procedure from neutral poly[(n-butyl acrylate)-block-(neopentyl styrene sulfonate)] in bulk and thin film states.
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