POSS‐nylon 6 nanocomposites: Influence of POSS structure on surface and bulk properties

Misra, Rahul; Fu, Bruce X.; Plagge, Andreas; Morgan, Sarah E.

doi:10.1002/polb.21714

Cited by 63 publications

(54 citation statements)

References 50 publications

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“…Generally overlooked in these systems is the low critical solubility of POSS in most polymers. Previous work has explored the solubility parameters of POSS-polymer combinations, in order to make predictions about dispersion and compatibility [15][16][17]; such methods produce inaccurate results. We have demonstrated that even with excellent matches in compatibility between POSS and matrix fillers, often as not the outcome is plasticization or antiplasticization of the polymer [18].…”

Section: Introductionmentioning

confidence: 99%

POSSⓇ in Tight Places

Milliman

Herbert

Schiraldi

2015

Silicon

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The nature of polymer/POSS interactions and associated thermo-mechanical properties are discussed, and found to be consistent with small-molecule interactions associated with POSS, rather than a bottom-up selfassembly or any other method of classical reinforcement. Hansen solubility parameters are shown to accurately predict polymer/POSS combinations which are capable of successful interactions; such interactions are necessary, but insufficient for polymer property enhancement, since in many cases compatibility simply leads to plasticization by POSS. In the presence of stong additive/polymer interactions, such as via hydrogen bonding and/or π-π stacking, moduli, strength and glass transitions can all be increased, but only up to the solubility limit for the POSS in the polymer, which typically is reached at approximately 2.5-3 wt % POSS. Beyond the solubility limit, phase separation and rapid degradation of properties is observed.

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Section: Introductionmentioning

confidence: 99%

POSSⓇ in Tight Places

Milliman

Herbert

Schiraldi

2015

Silicon

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“…modulus, strength, glass transition temperature, mechanical performance and thermal stability [5,6,[11][12][13][14][15]. Changes in the physical properties of the host polymer are usually attributed to the molecular aggregation of the POSS molecules themselves which then serve to reinforce the polymer network by acting as nucleating agents or plasticisers, which can influence the final crystalline morphology by either retarding or increasing the host polymer's crystallisation process.…”

Section: Introductionmentioning

confidence: 99%

Morphology and crystallization kinetics of polyethylene/long alkyl-chain substituted Polyhedral Oligomeric Silsesquioxanes (POSS) nanocomposite blends: A SAXS/WAXS study

Heeley

Hughes

Aziz

et al. 2014

European Polymer Journal

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The dispersal, quiescent crystallization kinetics and morphology of a series of unique polyethylene -polyhedral oligomeric silsesquioxanes (PE-POSS) nanocomposite blends is presented. POSS molecules with long linear alkyl-chain substituents were blended at one composition into a commercial low density polyethylene. Time-resolved Small-and WideAngle X-Ray scattering (SAXS/WAXS) and thermal techniques were used to elucidate the affect that POSS and its substituent groups have on the dispersal and crystallization kinetics of the host polymer. The miscibility and dispersal of the POSS molecules was seen to increase with the increasing alkyl-chain length substituents suggesting increased compatibility and interaction with the host polymer chains. The POSS molecules act as nucleating agents increasing the crystallinity, crystallization kinetics and influencing the final lamellar morphology. Thus, these unique POSS compounds show great potential as nancomposite filler particles in polyolefins where the alkyl-chain substituent plays a vital role in its compatibility and subsequent improvement of physical properties in the host polymer.

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“…78 They are used as a surface coating agent, but can also be added to a polymer and self-segregate to the surface, allowing hydrophilic polymers to be converted to hydrophobic polymer surfaces without extra processing steps. 85 This method also adds a roughness on a nanometer scale to the surface, due to the aggregation of the POSS molecules, which could be considered to be molecular particles.…”

Section: Ice Resistancementioning

confidence: 99%

The superhydrophobicity of polymer surfaces: Recent developments

Shirtcliffe

McHale

Newton

2011

J Polym Sci B Polym Phys

168

108

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Superhydrophobicity is the extreme water repellence of highly textured surfaces. The field of superhydrophobicity research has reached a stage where huge numbers of candidate treatments have been proposed and jumps have been made in theoretically describing them. There now seems to be a move to more practical concerns and to considering the demands of individual applications instead of more general cases. With these developments, polymeric surfaces with their huge variety of properties have come to the fore and are fast becoming the material of choice for designing, developing, and producing superhydrophobic surfaces.

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POSS‐nylon 6 nanocomposites: Influence of POSS structure on surface and bulk properties

Cited by 63 publications

References 50 publications

POSSⓇ in Tight Places

POSSⓇ in Tight Places

Morphology and crystallization kinetics of polyethylene/long alkyl-chain substituted Polyhedral Oligomeric Silsesquioxanes (POSS) nanocomposite blends: A SAXS/WAXS study

The superhydrophobicity of polymer surfaces: Recent developments

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