Morphology, mechanical and optical properties of transparent BR/clay nanocomposites

Wang, Shaohui; Zhang, Yong; Ren, Wei; Zhang, Yinxi; Lin, Hongfu

doi:10.1016/j.polymertesting.2005.03.008

Cited by 63 publications

(14 citation statements)

References 15 publications

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“…The figures 1 and 2 underline that by increasing the amount of fillers the transmittance, primarily in the visible region, decreases respect to that of PLA and the shape of the curves are greatly different. This effect could be ascribed to the nature of the filler (TiO 2 nanoparticles and ZnO particles), which absorb differently the energy and also to the distribution and agglomeration trend with respect to the fillers loading [24,25]. Comparing the two PLA trends, it results that the compression-moulded PLA film (Figure 1) has lower transmittance than the caledered PLA film (Figure 2).…”

Section: Uv-vismentioning

confidence: 96%

“…Then, the hydroperoxide undergo es photolysis with the formation of the HO• and a PO• radical that can further evolve by β-scission. Taking into account the stability of the different fragments the most probable β-scission appears to be the reaction leading to the formation of anhydride groups [24]. Figure 7 shows the FTIR-ATR absorbance spectra of UV irradiated PLA/5%TiO 2 nanocomposite films after 0, 3, 14 and 30 days of UV degradation.…”

Section: Atr Spectroscopy On Films After Uv Degradationmentioning

confidence: 99%

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Effect of TiO2 and ZnO on PLA degradation in various media

Marra¹,

Cimmino²,

Silvestre³

2017

Adv Mater Sci

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This work shows the effect of 2 and 5 wt% TiO 2 nanoparticles (modified by fluorocarbons and not) and of 1, 3 and 5 wt% ZnO particles on PLA degradation evaluated under UV irradiation, hydrolytical 1N NaOH solution, enzymatical proteinase K solution, and isothermal condition. The presence of TiO 2 nanoparticles and ZnO particles decreases the degradation processes of PLA under UV light exposure and increases the PLA hydrolytic degradation. The enzymatic degradation is faster with TiO 2 nanoparticles than with ZnO particles, respect neat PLA; whereas the opposite effect is identified in the PLA enzymatic degradation.

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Section: Uv-vismentioning

confidence: 96%

Section: Atr Spectroscopy On Films After Uv Degradationmentioning

confidence: 99%

Effect of TiO2 and ZnO on PLA degradation in various media

Marra¹,

Cimmino²,

Silvestre³

2017

Adv Mater Sci

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“…In general, several factors including the matrix properties, the interfacial refractive index difference between matrix and dispersed organic/inorganic domains, and the size of the dispersed organic/inorganic domains govern the optical properties of polymer composites [29,30]. Figure 4 shows the optical transmittance of the prepared chitosan and (nano) Fig.…”

Section: Optical Propertiesmentioning

confidence: 99%

Preparation and properties of chitosan/clay (nano)composites: a silanol quaternary ammonium intercalated clay

Chiu¹,

Lai²,

Hsieh³

et al. 2012

J Polym Res

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Chitosan/clay (nano)composites were prepared by using a special quaternary ammonium intercalating agent coupled with a silanol group to facilitate the organic clay formation. Exfoliated clay in the chitosan matrix was attained at the higher intercalant dosages through X-ray diffraction (XRD) and transmission electron microscope (TEM) analyses. Optical transmittance for the (nano)composites increased slightly with increasing the amount of intercalants in the clays. In light of the hydrophobic component on the intercalant and the effective clay content, the interfacial interaction between chitosan and modified clay may not be strong enough to render higher mechanical properties, even though the partially exfoliated clays were achieved to provide high interfacial area for the dispersed phase and the matrix. An optimum Young's modulus was thus found for (nano)composites using modified clay at a medium dosage of intercalant, which resulted from the balance of the dispersion status and interfacial interaction. This outcome indicated high dispersion of modified clay may not guarantee high mechanical properties of (nano)composites. The antimicrobial property of chitosan against Escherichia coli (E. coli) increased further with the addition of modified clays, in which the intercalant exhibiting the antimicrobial function. The modified clay at an optimum dosage of modifier to balance the mechanical properties and antimicrobial property was attained.

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“…Composite materials that include, epoxy/clay,3 high density polyethylene/clay,4 poly (methyl methacrylate)/clay,5 polystyrene/polyethylene/clay,6 polyamide/montmorillonite,7 poly (methyl metacrylate and polystyrene)/clay nanocomposites 8. Natural rubber/clay,9–11 and butyl rubber/clay composites have been prepared 12. Since these materials are not compatible with clay structure, ultrasound assisted mixing or discrete or continuous melt extrusion and ultrasound assisted continuous extrusion methods were applied 3–6, 13…”

Section: Introductionmentioning

confidence: 99%

Poly (diallyldimethylammoniumchloride)/sodium‐montmorillonite composite; structure, and adsorption properties

Günister¹,

Bozkurt

Çatalgil‐Giz

2012

J of Applied Polymer Sci

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A cationic polyelectrolyte, poly (diallyldimethylammoniumchloride) (PDADMAC) and a smectite‐type layered silicate (sodium activated montmorillonite clay (Sodium‐Montmorillonite, NaMt)), intercalated composites (PDADMAC/NaMt) were prepared. Basal spacings (d001) of NaMt in composites were measured by X‐Ray diffraction analysis (XRD). Ultrasonic addition of low molecular weight PDADMAC into the NaMt structure (at very low concentration and very low PDADMAC(g)/NaMt(g) ratios) resulted in good adsorbing properties both for positively and negatively charged dyes. The adsorption kinetics of the prepared composites both for negatively charged [remazol black (RB)] and positively charged [methylene blue (MB)] reactive dyes were investigated. The RB adsorption efficiency of the positively charged composite is approximately three times that of the pure NaMt while its MB adsorption efficiency is as good as that of pure NaMt. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Morphology, mechanical and optical properties of transparent BR/clay nanocomposites

Cited by 63 publications

References 15 publications

Effect of TiO2 and ZnO on PLA degradation in various media

Effect of TiO2 and ZnO on PLA degradation in various media

Preparation and properties of chitosan/clay (nano)composites: a silanol quaternary ammonium intercalated clay

Poly (diallyldimethylammoniumchloride)/sodium‐montmorillonite composite; structure, and adsorption properties

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