Copolymers of 4-adamantylphenyl methacrylate derivatives with methyl methacrylate and styrene

Mathias, Lon J.; Jensen, Jennifer J.; Thigpen, Kevin; McGowen, John; McCormick, Demetrius T.; Somlai, Louis S.

doi:10.1016/s0032-3861(01)00155-0

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…Adamantane, a highly symmetrical tricyclic hydrocarbon, has been incorporated into many polymer structures as a pendant group or directly into the polymer's main chain. The incorporation of the adamantane as a pendant group increases the solubility, decreases the crystallinity, enhances the glass transition temperature, and improves thermal stability 14–16. There have also been a number of reports on incorporation of the adamantane moiety in aromatic polyamides and polyimides 17, 18…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of nylon 18 18 and nylon 18 adamantane

Bennett

Kaya

Sikes

et al. 2009

J. Polym. Sci. A Polym. Chem.

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Nylon 18 18 and nylon 18 1,3-adamantanedicarboxylic acid (ADA) have been synthesized via melt polycondensation and characterized by thermal and spectroscopic techniques. Good film forming behavior combined with film toughness and flexibility indicate reasonable molecular weights for both. The higher aliphatic content of nylon 18 18 leads to increased resistance to common organic solvents over commercial nylons. Crystallization of nylon 18 18 combines hydrogen bonding of the amide units with a more significant contribution from van der Waals forces than possible for lower aliphatic content nylons due to the greater aliphatic chain lengths. Solid state 15 N CP/MAS NMR indicates a mostly amorphous polymer, with crystalline regions comprised of the thermodynamically stable a-form generally adopted by even-even nylons. Nylon 18 ADA as-produced is completely amorphous as determined by differential scanning calorimetry. However, solution cast samples of nylon 18 ADA shows some ordered structures that can grow into more stable crystals with annealing. These crystals, once melted, do not recrystallize possibly due to chain rearrangement inhibited by bulky adamantly-groups. V

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of nylon 18 18 and nylon 18 adamantane

Bennett

Kaya

Sikes

et al. 2009

J. Polym. Sci. A Polym. Chem.

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“…As an added substituent on the main chain, adamantane, for example, can increase the glass transition by as much as 100 °C [28]. However, with very low incorporations of the bulky substituents, the polymers tend to become very brittle.…”

Section: Polyhedral Oligomeric Silsesquioxanes (Poss)mentioning

confidence: 99%

Silica-Based Sol-Gel Organic-Inorganic Nanocomposite Materials: A Review of Different Material Technologies

Young¹

2002

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Organic-inorganic nanocomposite materials continue to interest researchers. The idea of combining the properties of organic systems with the properties of inorganic systems in a synergistic fashion is not only desirable but also widely sought in materials. It is the difficulties with which these materials are often met which keep many researchers from entering this field. However, the area of silica-based organic-inorganic nanocomposites is not new and is quickly becoming one of the emerging technologies for new materials. This work represents an overview of the different types of silica-based organic-inorganic nanomaterials.

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“…In bridged and non-polar polycyclic hydrocarbon structures, rigidity and three-dimensional size contribute to a high free volume, low moisture absorption and absence of π-electrons to lower the dielectric constant and increase optical transparency in the visible region [5][6][7][8][9][10][11][12][13]. Consequently, we hypothesized that incorporation of bulky, rigid tricycloalkyl substituents into PMMA would improve the thermal and mechanical properties of the polymer and maintain good optical and dielectric properties to result in high-performance, high-value materials for use in microelectronic and optoelectronic applications.…”

Section: Introductionmentioning

confidence: 99%