Thermal behaviour of a series of novel aliphatic bridged polyhedral oligomeric silsesquioxanes (POSSs)/polystyrene (PS) nanocomposites: The influence of the bridge length on the resistance to thermal degradation

Blanco, Ignazio; Abate, L.; Bottino, Francesco A.; Bottino, Paola

doi:10.1016/j.polymdegradstab.2014.01.029

Cited by 56 publications

(39 citation statements)

References 42 publications

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“…In the next Fig. 4a, b the DT 5 % values of the here studied nanocomposites prepared with cyclopentyl POSSs (solid circles and squares) are compared with those previously obtained for the nanocomposites prepared with the corresponding isobutyl POSSs (empty circles and squares) [33,34]. Since we would compare the increments in thermal stability between nanocomposites containing POSSs with the same bridge and different (cyclopentyl or isobutyl) periphery, isobutyl compounds are indicated on the x axis by the same numbers of the corresponding cyclopentyl derivatives.…”

Section: Resultsmentioning

confidence: 86%

“…Their thermal decomposition was studied and higher thermal stability was evidenced for cyclopentyl derivatives than for the isobutyl ones. The bridged PS based nanocomposites of isobutyl POSSs were thus prepared, that exhibited averagely only little improvements of thermal stability in respect to neat PS [33,34]. We studied here the thermal decomposition of PS nanocomposites containing aliphatic and aromatic bridged polyhedral silsesquioxanes with cyclopentyl peripheries.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Thermal Behaviour of Novel Aliphatic/Aromatic Hepta-Cyclopentyl Bridged Polyhedral Oligomeric Silsesquioxanes (POSSs)/Polystyrene (PS) Nanocomposites

Blanco

Abate

Bottino

et al. 2015

J Inorg Organomet Polym

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The resistance to the thermal degradation of some polystyrene (PS) based nanocomposites, containing as filler novel aliphatic and aromatic hepta-cyclopentyl bridged polyhedral oligomeric silsesquioxanes (POSSs), was evaluated in both inert and oxidative atmospheres. The fillers were formed by two identical silicon cages R 7 (SiO 1.5 ) 8 (R = cyclopentyl) linked to several aliphatic [-(CH 2 ) 2 -, -(CH 2 ) 6 -and -(CH 2 ) 10 -] and aromatic (Ar, Ar-Ar, Ar-O-Ar and Ar-S-Ar) bridges, where Ar = p-C 6 H 4 . Nanocomposites were prepared by in situ polymerization of styrene in the presence of 5 % w/w of appropriate POSS. The actual filler content in the products obtained, checked by 1 H NMR spectroscopy, resulted in all cases slightly higher than in starting mixtures. The glass transition temperature (T g ) was also determined by Differential Scanning Calorimetry. The degradation of nanocomposites was carried out into a thermobalance and the temperatures at 5 % mass loss (T 5 % ) were determined to evaluate the resistance to the thermal degradation which resulted, for the compounds here studied, higher not only than PS, but also than those of the nanocomposites filled with the corresponding hepta-isobutyl POSSs. The results were compared and discussed and suggested that the increments of resistance to thermal degradation in respect to neat PS (T 5 % of nanocomposite -T 5 % of PS) obey to an additivity group law.

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Section: Resultsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Synthesis and Thermal Behaviour of Novel Aliphatic/Aromatic Hepta-Cyclopentyl Bridged Polyhedral Oligomeric Silsesquioxanes (POSSs)/Polystyrene (PS) Nanocomposites

Blanco

Abate

Bottino

et al. 2015

J Inorg Organomet Polym

Self Cite

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“…The thermoanalytical curves are generally discussed in terms of mass loss vs temperature trends. The temperatures for each decomposition step are defined from the maximum of the degradation rate vs temperature trends; alternatively, the temperature at which a certain amount of mass loss is approached (typically 5%) can be considered (Blanco et al, 2014). The composite residual mass at the higher investigated temperature provides information on the actual filler content and its homogeneity within the polymer (Cavallaro et al, 2011b).…”

Section: Bionanocomposites Mechanical and Thermal Responsementioning

confidence: 99%

Halloysite ‐Based Bionanocomposites

Lazzara

Massaro

Milioto

et al. 2017

Handbook of Composites From Renewable Materials

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Scientific research has been invigorated by a new class of biodegradable materials as alternatives to polymers derived from fossils. Such biomaterials can also offer economic advantages because they are derived from renewable resources. Several biopolymers (gelatin, chitin, chitosan, starch, pectin, cellulose and its modified versions, etc.) have been exploited to produce films and formulations. Their use is limited because of fast degradation, predominant hydrophilic character, and, in some cases, unsatisfactory mechanical properties. However, the properties of these polymers can be improved by using inorganic fillers such as additives. Halloysite nanotube is a promising green filler for this purpose.

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“…A number of studies have been performed aimed at improving the thermal stability and mechanical properites of polystyrene (PS) by compounding it with organic or inorganic particles [1][2][3], such as multi-wall carbon [4], clay [5] and graphene [6]. For example, P. Pereira et.al [7] compared the impact of fullerenes and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) on the thermal stability of melt processed polystyrene, and reported that the PS-PCBM have higher thermal than the corresponding PS-C 60 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characteristics of Polystyrene/Attapulgite Composites Via In-siu Suspension Polymerization

Wang

2016

MATEC Web Conf.

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Abstract.A series of polystyrene/attapulgite composites were synthesized through suspension polymerization. The composites were characterized by Fourier transform infrared spectroscopy, thermal gravimetric analysis, and X-ray diffraction. FTIR results show that there was no significant change in the peak positions and the peak intensity for polystyrene/attapulgite composites compared to the pure polystyrene. There is a rise in thermal stability of composites compared to pure polystyrene. Attapulgite acts as an effective thermal barrier and thereby hinders the degradtion of polystyrene.

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Thermal behaviour of a series of novel aliphatic bridged polyhedral oligomeric silsesquioxanes (POSSs)/polystyrene (PS) nanocomposites: The influence of the bridge length on the resistance to thermal degradation

Cited by 56 publications

References 42 publications

Synthesis and Thermal Behaviour of Novel Aliphatic/Aromatic Hepta-Cyclopentyl Bridged Polyhedral Oligomeric Silsesquioxanes (POSSs)/Polystyrene (PS) Nanocomposites

Synthesis and Thermal Behaviour of Novel Aliphatic/Aromatic Hepta-Cyclopentyl Bridged Polyhedral Oligomeric Silsesquioxanes (POSSs)/Polystyrene (PS) Nanocomposites

Halloysite ‐Based Bionanocomposites

Preparation and Characteristics of Polystyrene/Attapulgite Composites Via In-siu Suspension Polymerization

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