A Novel Synthetic Route Toward Amphiphilic Comb-Like Polymers: Alternating Copolymerization of 4-Alkyloxybenzylidenemalononitriles with Ethyl Vinyl Ether

Kang, Youn‐Bae; Sohn, Byeong‐Hyeok; Jung, Jin Chul; Zin, Wang‐Cheol

doi:10.1002/1521-3935(20011001)202:15<2992::aid-macp2992>3.0.co;2-c

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Polymer combs with oligoethylene oxide teeth are good ionic conductors because of the high flexibility of short oligoethylene oxide chains as well as the strong interaction between the ether oxygens and lithium ions. − Since the T g s of methacrylate-based combs decrease as the length of the oligoethylene oxide side chain increases, most are not dimensionally stable, and they typically need to be cross-linked. In general, the glass transition cannot be relied upon to provide mechanical stability in single phase electrolytes, and even poly( p -phenylene)s soften and flow when the PEO side chains are long enough to screen the interactions between rigid-rod backbones .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure, and Ionic Conductivity of Self-Assembled Amphiphilic Poly(methacrylate) Comb Polymers

et al. 2006

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Methacrylate comb polymers were synthesized that have amphiphilic teeth of ethylene glycol oligomers capped with alkyl groups. Both segments are of exact length to promote self-organization and crystallization. The atactic methacrylate backbone plus close proximity to the polymer backbone inhibits crystallization of the oligoethyelene oxide segments, but the terminal alkyl segments readily crystallize. Wide angle x-ray diffraction and differential scanning calorimetry were used to characterize polymer side chain crystallization and its evolution as a function of the length of the amphiphilic teeth. An analysis of the d-spacings places the oligoethylene glycol segment and the first 8 carbon atoms of the alkyl chain in an amorphous phase. An ~1Å/carbon atom increase in the d-spacing is consistent with the crystalline segments being tilted relative to the polymer backbone. When the number of carbon atoms in alkyl segments is ≥14, addition of LiClO 4 yields an ionic conducting ethylene oxide phase with retention of the alkyl crystallization. These novel polymer electrolytes use crystallization as a structural element to maintain dimensional stability.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Structure, and Ionic Conductivity of Self-Assembled Amphiphilic Poly(methacrylate) Comb Polymers

et al. 2006

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Synthesis and characterization of novel copolymers with acid‐labile ketal moieties derived from camphor

Liu

Wang

2003

J of Applied Polymer Sci

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Novel diastereomeric acrylic ketal monomers derived from (ϩ)-camphor and (Ϯ)-camphor were synthesized. To investigate the applications of the camphor derivatives on positive-tone photoresists, the acrylic ketal monomers were copolymerized with methyl methacrylate, methacrylic acid, and n-butyl methacrylate. The optical activities of the chiral monomers and polymers were all evaluated. After UV irradiation and postexposure baking, the optical activity of the polymers decreased because of the decomposition of the acid-labile pendant chiral groups. The existence of alicyclic camphyl groups increased the etching resistance of the photoresists. The thermogravimetric properties of the copolymers, the exposure curves, the lithographic evaluation of the positive-tone photoresists, and the effects of alicyclic groups on the plasma etching resistance of the copolymers were all investigated. A resolution of a lineand-space pattern of 0.3 m was achieved. Acid-catalyzed dehydration crosslinking was also found in this system. Sufficient UV irradiation and heat treatment could cause the acid-catalyzed dehydration crosslinking of pendant carboxyl groups and thereby increase the efficiency of the thermal resistance of the polymers.

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A Novel Synthetic Route Toward Amphiphilic Comb-Like Polymers: Alternating Copolymerization of 4-Alkyloxybenzylidenemalononitriles with Ethyl Vinyl Ether

Cited by 2 publications

References 15 publications

Synthesis, Structure, and Ionic Conductivity of Self-Assembled Amphiphilic Poly(methacrylate) Comb Polymers

Synthesis, Structure, and Ionic Conductivity of Self-Assembled Amphiphilic Poly(methacrylate) Comb Polymers

Synthesis and characterization of novel copolymers with acid‐labile ketal moieties derived from camphor

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