Structure–property correlations in some nematic main–chain polyesters

Blumstein, A.; Gauthier, M. M.; Thomas, O.; Blumstein, R. B.

doi:10.1039/dc9857900033

Cited by 33 publications

(13 citation statements)

References 1 publication

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“…The authors combined montmorillonite (MMT) pre-intercalated with diverse onium compounds, with elastomeric latex, and then processed the PNC by standard methods. In 1961, Blumstein polymerized vinyl monomers (e.g., methylmethacrylate) in the presence of intercalated MMT (2). In 1963 Nahin and Backlund patented low-density polyethylene (LDPE)-organoclay 1:1 compositions (3).…”

Section: Introduction Generalmentioning

confidence: 99%

Melt compounding of different grades of polystyrene with organoclay. Part 2: Rheological properties

Tanoue

Utracki

García‐Rejón

et al. 2004

Polymer Engineering & Sci

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Polystyrene‐based nanocomposites (PNC) were prepared using three grades of polystyrene (different molecular weights). The resin was melt‐compounded with 0 to 10 wt% of commercial organoclay in a co‐rotating twin‐screw extruder. Owing to thermo‐oxidative degradation the degree of dispersion was poor. The rheological properties of PNC were determined under dynamic and steady state shear as well as under extensional flow conditions. At the higher clay content, dynamic strain sweep demonstrated that the storage and loss moduli decrease continuously with an increase of strain. To characterize this nonlinear viscoelastic behavior, the Fourier‐transform rheology was applied. The low strain frequency sweep showed that the storage and loss moduli increase with organoclay content. The extracted zero‐shear viscosity data were used to calculate the intrinsic viscosity and then the aspect ratio of dispersions. In spite of nonlinear viscoelastic behavior, the time‐temperature superposition was observed in the full range of concentration. The horizontal and vertical shift factors were found to be almost independent of organoclay content and molecular weight of PS. For comparison, PNC was also prepared by the solution method. A high degree of dispersion was obtained, reflected in the aspect ratio: p = 269, to be compared with p = 16 calculated for the melt‐compounded PNC. Polym. Eng. Sci. 44:1061–1076, 2004. © 2004 Society of Plastics Engineers.

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Section: Introduction Generalmentioning

confidence: 99%

Melt compounding of different grades of polystyrene with organoclay. Part 2: Rheological properties

Tanoue

Utracki

García‐Rejón

et al. 2004

Polymer Engineering & Sci

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“…Polymer-layered silicates nanocomposites were first reported in 1961, when Blumstein [53] obtained a polymer inserted in the structure of montmorillonite (MMT) by polymerizing a vinyl monomer. Two years later, Greenland [54] used a poly(vinyl alcohol)/MMT system to show that polymer could be directly inserted into clay layers in an aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Preparation Methods and Properties of Polypropylene/Layered Silicate Nanocomposites

Lee¹,

Prashantha²,

Hong³

et al. 2006

Processing and Properties of Nanocomposites

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“…The polymers appear as uniform monolayers,as shown by AFM and TEM imaging.Furthermore,they exhibit apronounced solvent responsivity.The results demonstrate the value of DNA-controlled self-assembly for the formation of two-dimensional polymers in solution.Ever since the unravelling of their chemical nature by Staudinger, [1] one-dimensional (1D) polymers have greatly influenced our lives.T he expansion of chain-like macromolecules to the second dimension leads to sheet-like macromolecules [2] or two-dimensional (2D) polymers. ADNA-based monomer self-assembles into asupramolecular network, whichi sf urther converted into the covalently linked two-dimensional polymer by anthracene dimerization.…”

mentioning

confidence: 99%

“…Ever since the unravelling of their chemical nature by Staudinger, [1] one-dimensional (1D) polymers have greatly influenced our lives.T he expansion of chain-like macromolecules to the second dimension leads to sheet-like macromolecules [2] or two-dimensional (2D) polymers. [3][4][5][6][7][8][9][10][11] Graphene,w hich forms under extreme thermolytic conditions, serves as the prototype of this class of macromolecules.…”

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confidence: 99%

Synthesis of Responsive Two‐Dimensional Polymers via Self‐Assembled DNA Networks

Alexander

Aschauer

et al. 2017

Angew Chem Int Ed

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Despite a growing interest in two-dimensional polymers, their rational synthesis remains a challenge. The solution-phase synthesis of a two-dimensional polymer is reported. A DNA-based monomer self-assembles into a supramolecular network, which is further converted into the covalently linked two-dimensional polymer by anthracene dimerization. The polymers appear as uniform monolayers, as shown by AFM and TEM imaging. Furthermore, they exhibit a pronounced solvent responsivity. The results demonstrate the value of DNA-controlled self-assembly for the formation of two-dimensional polymers in solution.

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Structure–property correlations in some nematic main–chain polyesters

Cited by 33 publications

References 1 publication

Melt compounding of different grades of polystyrene with organoclay. Part 2: Rheological properties

Melt compounding of different grades of polystyrene with organoclay. Part 2: Rheological properties

Preparation Methods and Properties of Polypropylene/Layered Silicate Nanocomposites

Synthesis of Responsive Two‐Dimensional Polymers via Self‐Assembled DNA Networks

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