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Synthesis and self-assembly of graft polymers with variable grafting density

Lin, Tzu-Pin and Chang, Alice and Grubbs, Robert H. (2017) Synthesis and self-assembly of graft polymers with variable grafting density. In: 254th American Chemical Society National Meeting & Exposition, August 20-24, 2017, Washington, DC.

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New approaches have been developed to enable facile control of grafting d., side-chain length, and total backbone d.p. These synthetic advances were achieved by living ring-opening metathesis copolymn. of a macromonomer (PLA or PS) and a discrete diluent (DME or DBE) in different feed ratios. The consequences of grafting d. variations have been studied in the context of block copolymer self-assembly. We found that systems with sym. diblock (PLA-b-DME)_n-(PS-b-DBE) bearing various grafting densities could self-assemble into lamella morphol. The lamella domain spacings, detd. by small angle X-ray scattering (SAXS) expts., reveal unusual scaling trends presumably assocd. with drastic changes in chain conformations resulting from grafting d. variations.

Item Type:Conference or Workshop Item (Paper)
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URLURL TypeDescription Website
Lin, Tzu-Pin0000-0001-7041-7213
Chang, Alice0000-0001-5036-2681
Grubbs, Robert H.0000-0002-0057-7817
Additional Information:© 2017 American Chemical Society.
Record Number:CaltechAUTHORS:20170911-142151938
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:81307
Deposited By: Tony Diaz
Deposited On:11 Sep 2017 21:42
Last Modified:09 Mar 2020 13:18

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