Thermodynamic interaction and mechanical characteristics of Nylon 6 and polyhedral oligomeric silsesquioxane nanohybrids

Lim, Sang Kyoo; Hong, Eunsook; Song, Yu-Hyun; Choi, Hyoung Jin; Chin, In‐Joo

doi:10.1007/s10853-011-5799-7

Cited by 21 publications

(14 citation statements)

References 48 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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“…Recently, polyhedral oligomeric silsesquioxanes (POSS), as new lightweight and high‐performance hybrid materials, have commonly been used as reinforcing agents to improve their comprehensive properties of various polymeric matrices , such as surface properties , mechanical properties , glass transition temperature, thermal properties, resistance to flammability, and so on . Till now, polydimethylsiloxane (PDMS) composites have still been studied for good thermal and oxidative stability, low glass transition temperature, good electrical properties, low surface free energy, weather resistance, low toxicity, and low chemical reactivity .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of novel polydimethylsiloxane composites used POSS as cross-linker and fumed silica as reinforcing filler

Chen

Huang

2013

Polym. Compos.

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A series of novel polydimethylsiloxane (PDMS) composites were prepared using octa[(trimethoxysilyl)ethyl]‐POSS (OPS) as cross‐linker and fumed silica as reinforcing filler. The cross‐linked networks, morphologies, thermal and mechanical properties of these novel PDMS composites were examined by attenuated total reflection infrared spectroscopy and the extraction/swelling experiment, scanning electron microscope, thermogravimetric analysis, and universal tensile testing machine, respectively. It was found that both the resistance to thermal degradation and mechanical properties of the novel PDMS composites were improved greatly by adding fumed silica. The prominent improvements in resistance to thermal degradation and mechanical properties of novel PDMS composites were likely attributed to the enhanced interaction of PDMS chains and aggregated particles resulted from synergistic effect between POSS and fumed silica. Meanwhile, we also found that the resistance to thermal degradation of the PDMS composites was lowered slightly with the further increment in loading fumed silica, but their mechanical properties were enhanced. The slight decrease in trend of the resistance to thermal degradation of the novel PDMS composites was likely ascribed to the increasing amount of hydroxyl groups resulting from fumed silica. And the improving mechanical properties were mainly attributed to the increasing interaction of PDMS chains and aggregated particles originated from synergistic effect between POSS and fumed silica. POLYM. COMPOS., 34:1041–1050, 2013. © 2013 Society of Plastics Engineers

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“…The FT-IR spectrum of OMDPSS showed some new peaks, which resulted from the incorporation of SO 2 and CH 3 groups. The peak at 576 cm -1 corresponded to the SO 2 bending vibration; the peaks at 1074, 1118, and 1135 cm -1 corresponded to the SO 2 symmetrical stretching vibration; the peaks at 1301 and 1322 cm -1 corresponded to the SO 2 asymmetrical stretching vibration; and the peak at 1447 cm -1 corresponded to the C-H asymmetrical bending vibration of CH 3 . The peaks at 690 and 804 cm -1 corresponded to the C Ar -H bending vibrations, which reveal the positions of the aromatic ring substituents.…”

Section: Characterization Of Omdpssmentioning

confidence: 99%

“…Polyhedral oligomeric silsesquioxanes (POSSs) are a type of inorganic-organic hybrid material that have drawn much attention in recent years because of the enhancement of a variety of physical and mechanical properties in these organic polymeric materials [1][2][3][4][5][6][7][8][9][10]. The general formula of POSS is (RSiO 3/2 ) n where n is commonly 6, 8, or 10 and R is hydrogen or any alkyl, alkylene, aryl, arylene, or organofunctionalized derivative of these groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and properties of a novel polyhedral oligomeric octamethyldiphenylsulfonylsilsesquioxane

Yang

2014

J Mater Sci

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A novel polyhedral oligomeric octamethyldiphenylsulfonylsilsesquioxane (OMDPSS) was synthesized from octaphenylsilsesquioxane and benzenesulfonyl chloride via a Friedel-Crafts reaction in high yield. OMDPSS was characterized by Fourier transform infrared spectroscopy, 1 H NMR, 13 C NMR, and 29 Si NMR spectroscopy, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), wide-angle X-ray diffraction, differential scanning calorimetry, and elemental analysis, and found to be an amorphous polyhedral oligomeric silsesquioxane with a (RSiO 3/2 ) 8 structure. OMDPSS exhibited good solubility in commonly used solvents and superior thermal stability according to thermogravimetric analysis. Its initial thermal decomposition temperature (T d5% ) was found to be 401°C in air and 428°C in nitrogen.

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Thermodynamic interaction and mechanical characteristics of Nylon 6 and polyhedral oligomeric silsesquioxane nanohybrids

Cited by 21 publications

References 48 publications

POSSⓇ in Tight Places

POSSⓇ in Tight Places

Preparation and characterization of novel polydimethylsiloxane composites used POSS as cross-linker and fumed silica as reinforcing filler

Synthesis, characterization, and properties of a novel polyhedral oligomeric octamethyldiphenylsulfonylsilsesquioxane

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