Processable photonic polymers with controllable properties

Kallitsis, Joannis K.; Andreopoulou, Aikaterini K.

doi:10.1002/polb.10637

Cited by 10 publications

(9 citation statements)

References 36 publications

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“…In these aggregates, the rod blocks align in parallel orientation with one another because the rod blocks have high ordering properties and a high association ability 1–5. To the rod–coil diblock copolymers reported so far, some kinds of rod polymers have been applied, such as polypeptides,6–8 polyisocyanates,9, 10 liquid‐crystal polymers,11–15 and π‐conjugated polymers 16–27. Because π‐conjugated polymers have electroactive and optical properties, these properties can be imparted to an assembly formed from the diblock copolymers, and nanometer‐scale functional materials can be readily obtained.…”

Section: Introductionmentioning

confidence: 99%

Self‐assembly of oligo(p‐phenylenevinylene)‐block‐poly(ethylene oxide) in polar media and solubilization of an oligo(p‐phenylenevinylene) homooligomer inside the assembly

Mori

Watanabe

Minagawa

et al. 2005

J. Polym. Sci. A Polym. Chem.

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Rod–coil amphiphilic diblock copolymers, consisting of oligo(p‐phenylenevinylene) (OPV) as a rod and hydrophobic block and poly(ethylene oxide) (PEO) as a coil and hydrophilic block, were synthesized by a convergent method. The aggregation behavior of the block copolymers in a selective solvent (tetrahydrofuran/H2O) was probed with the absorption and emission of the OPV block. With increasing H2O concentration, the absorption maximum was blueshifted, the emission from the molecularly dissolved OPV decreased, and that from the aggregated OPV increased. This indicated that the OPV blocks formed H‐type aggregates in which the OPV blocks aligned in a parallel orientation with one another. The transmission electron microscopy observation revealed that the block copolymers with PEO weight fractions of 41 and 62 wt % formed cylindrical aggregates with a diameter of 6–8 nm and a length of several hundreds nanometers, whereas the block copolymer with 79 wt % PEO formed distorted spherical aggregates with an average diameter of 13 nm. Furthermore, the solubilization of an OPV homooligomer with the block copolymer was studied. When the total polymer concentration was less than 0.1 wt %, the block copolymer solubilized OPV with a 50 mol % concentration. The structure of the aggregates was a cylinder with a relatively large diameter distribution. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 1569–1578, 2005

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Section: Introductionmentioning

confidence: 99%

Self‐assembly of oligo(p‐phenylenevinylene)‐block‐poly(ethylene oxide) in polar media and solubilization of an oligo(p‐phenylenevinylene) homooligomer inside the assembly

Mori

Watanabe

Minagawa

et al. 2005

J. Polym. Sci. A Polym. Chem.

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“…3. 13 C NMR spectrum of BMPI. exothermic temperature increased in the order of BDM < BDE < BMPI < BDS.…”

Section: Reactivity Of Bmpimentioning

confidence: 99%

“…Therefore, the incorporation of phosphorus content into polymer molecular structure has an improvement on flame-retardation properties. [13][14][15][16][17][18] Due to its phosphorus content will have phosphorus oxides formation as a non-flammable condensed phase that covering over the surface that cut down air supply during combustion process. It prevents from further combustion and has a high char yield after heating under air atmosphere (combustion).…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties Improvement of Bismaleimide Resin by a New Phosphorus‐containing Polycyclic Bismaleimide

Tsai

Kuo²,

Shau

2012

J Chinese Chemical Soc

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A new phosphorus-containing polycyclic bismaleimide resin (BMPI) was prepared by the reaction of bis(3-maleimidophenyl) methylphosphine oxide (BAMP) with benzene-1,2,4,5-tetracarboxylic dianhydride (BTD) and maleic anhydride (MA). BMPI was confirmed by infrared (IR), 1 H-and 13 C-NMR spectroscopies. Its thermal properties were carried out by a differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) that revealed that the polymers have excellent thermal properties in the high temperature region and a high char yield of up to 53~65%. Furthermore, three conventional bismaleimide resins were prepared from different phosphorus-free bismaleimides for comparison, e.g. 4,4¢-bismaleimidodiphenylmethane (BDM), 4,4¢-bismaleimidodiphenylether (BDE), 4,4¢-bismaleimidodiphenylsulfone (BDS).

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“…than the non-crosslinked ones. 1,2,3 These systems, typically with core shell morphology, are employed in various applications [4][5][6][7][8][9][10][11] like coatings for damping control (particularly to make a 'Silent Paint'), adhesives, 8 photonic crystals, 6 impact modifiers, 9 etc. Such products derive their properties in part from the morphology of the particles and in many instances either or both polymer phases are cross-linked to some extent.…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic and damping characteristics of poly(n‐butyl acrylate)‐poly(n‐butyl methacrylate) semi‐IPN latex films

Suresh

Vishwanatham

Bartsch

2007

Polymers for Advanced Techs

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This article reports the synthesis, characterization, and damping characteristics of semiinterpenetrating (semi-IPN) latex systems composed of poly n-butyl acrylate (PBA) core and poly n-butyl methacrylate (PBMA) shell. The IPN's were prepared by seeded emulsion polymerization using crosslinked PBA seeds with varying crosslinker (m-diisopropenyl benzene) concentration. The polymer weight ratio in the first and second stage polymerization is maintained at 1:1 in all the cases. The particle size determined by dynamic light scattering shows a decrease in the shell thickness with increasing crosslinker concentration of the seed. The mechanical properties, like Shore A hardness of the films, increased from 18 to 65 when the crosslinker concentration is increased from 0 to 4.8 mol%. The dynamic mechanical studies show that the modulus value of the IPN's is below that of non-crosslinked films, and the value depends upon the crosslink density of the seed. Mechanical models, such as the Kerner's model and the Takayanagi's model, were used to explain the variation in the dynamic mechanical properties with the degree of seed crosslinking. The study indicates lower bound (rubbery) behavior for the films with lightly crosslinked cores. The study also shows that, at lower crosslinker concentration enhanced phase separation and better damping properties are achieved but at higher cross linker concentration (>2 mol%) greater interpenetration of the shell monomer to the cores takes place and tough films, with reduced damping properties are formed.

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Processable photonic polymers with controllable properties

Cited by 10 publications

References 36 publications

Self‐assembly of oligo(p‐phenylenevinylene)‐block‐poly(ethylene oxide) in polar media and solubilization of an oligo(p‐phenylenevinylene) homooligomer inside the assembly

Self‐assembly of oligo(p‐phenylenevinylene)‐block‐poly(ethylene oxide) in polar media and solubilization of an oligo(p‐phenylenevinylene) homooligomer inside the assembly

Thermal Properties Improvement of Bismaleimide Resin by a New Phosphorus‐containing Polycyclic Bismaleimide

Viscoelastic and damping characteristics of poly(n‐butyl acrylate)‐poly(n‐butyl methacrylate) semi‐IPN latex films

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