Photoinduced birefringence in blends of a polyurethane bearing azobenzene moieties and a poly(amide–imide)

Ceridório, Lucinéia Ferreira; Cardoso, Maria Aparecida Alves; Pavinatto, Felippe J.; Carvalho, Antônio J. F.; Mendonça, Cleber Renato; Balogh, Débora Terezia

doi:10.1002/pi.2054

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The lines are drawn to guide the eye. [4,10,24,35], copolymers [5,10,17,36,37] and blends [38,39] with the advantage of a relatively small writing time. The comparison of the two mixtures indicated that 41% molar fraction of azopolymer are sufficient for the photoinduced birefringence, with an optimized writing process using 1.4 mW of laser power.…”

Section: Tablementioning

confidence: 99%

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Ceridório¹,

Balogh²,

Caseli

et al. 2010

Journal of Colloid and Interface Science

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a b s t r a c tThe applicability of azopolymers in optical storage can be extended through the use of nanostructured films produced with the Langmuir-Blodgett (LB) technique, but the film properties need to be optimized since these polymers generally do not form stable Langmuir films to be transferred onto solid substrates. Here, photoinduced birefringence was investigated for mixed Langmuir-Blodgett films from the homo-0 -nitroazobenzene (HPDR1-MA) and poly(dodecylmethacrylate) (HPDod-MA). The interactions between these polymers were studied in Langmuir and LB films. Surface pressure-area isotherms pointed to molecular-level interactions for proportions of 51 mf%, 41 mf% and 31 mf% of HPDR1-MA. Phase segregation was not apparent in the BAM images, in which the morphology of the blend film was clearly different from that of the Langmuir films of neat homopolymers. Through PM-IRRAS, we noted that the interaction between the azopolymer and HPDod-MA affected the orientation of carbonyl groups. Strong interactions for the mixture with 41 mf% of poly(dodecylmethacrylate) led to stable Langmuir films that were transferred onto solid supports as LB films. The photoinduced birefringence of 101-layer mixed LB films show features that make these films useful for optical storage, with the advantage of short writing times in comparison to other azopolymer films.

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Section: Tablementioning

confidence: 99%

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Ceridório¹,

Balogh²,

Caseli

et al. 2010

Journal of Colloid and Interface Science

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Interação entre quitosana e modelos de membrana celular: filmes de Langmuir e Langmuir-Blodgett (LB)

Pavinatto¹

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Agradeço em primeiro lugar a Deus, pai de Jesus Cristo, a quem eu dedico esta tese, por Ele ter me permitido e ter me ajudado a realizar esse trabalho de doutorado. À Thatyane Morimoto Nobre Pavinatto, minha esposa, amiga, colaboradora e pessoa que me completa. Agradeço por sua existência em minha vida, pelo amor recíproco que temos, e por me dar suporte em tudo, estando sempre ao meu lado. Aos meus pais Antônio Tadeu Pavinatto e Maria Benedita Silveira Pavinatto, por serem os responsáveis pela minha educação, caráter e por minha formação como homem. Também por todo o amor e apoio ao longo de toda a minha vida. Da mesma forma, a minha irmã Adriana Pavinatto, pela amizade, companheirismo e por estar sempre comigo. Ao professor Osvaldo N. Oliveira Jr. (Chu), por me orientar nos últimos oito anos, me dando total incentivo, confiança e autonomia; me apoiando em tudo que contribuiu para minha formação, especialmente durante o período de doutorado. Agradeço ao Chu principalmente pela amizade. Às pessoas fundamentais para a realização deste trabalho de doutorado, que contribuíram com experimentos e/ou discussões, e que são grandes amigos: Luciano Caseli,

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Thermal characteristics and phase structure of thermostable polyimide/polyurethane film materials

Grigoryeva¹,

Fainleib²,

Starostenko³

et al. 2015

Polym. z.

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Photoinduced birefringence in blends of a polyurethane bearing azobenzene moieties and a poly(amide–imide)

Cited by 3 publications

References 14 publications

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Interação entre quitosana e modelos de membrana celular: filmes de Langmuir e Langmuir-Blodgett (LB)

Thermal characteristics and phase structure of thermostable polyimide/polyurethane film materials

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