Dispersion State of Zirconium Oxide Particles in Polymer Blends and Viscoelastic Behavior of the Composites

Takahashi, M.; Osawa, Syozo; Jinnai, Hiroshi; Yamane, Hideki; Shiomi, Haruhisa

doi:10.1678/rheology.35.1

Cited by 4 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the one hand, Zirconia affects in the elongation at break and an overall fall can be observed (F6 decreases a 24%). Nevertheless, the data dispersion is broad what indicates the appearance of agglomerates producing a stress concentrating effect favouring a premature rupture [38]. All in all, this decrease is noticeably found for 4 wt.% of ZrO2, which is a quite positive result for such a high content of zirconium if compared with other similar studies using it as reinforcement agent in polymers.…”

Section: Mechanical Testsmentioning

confidence: 52%

Colour Fixation Strategies on Sustainable Polybutylene Succinate Using Biobased Itaconic Acid

García-Quiles¹,

Vidal²,

Puglia³

et al. 2020

Preprint

View full text Add to dashboard Cite

BioPBS is gaining attention in the biodegradable polymer market due to their promising properties such as high biodegradability and processing versatility representing a potential sustainable replacement for fossil oil-based commodities. However, there is still a need to enhance its properties for certain applications, being aesthetical and mechanical properties a challenge. The aim of the present work is to improve these properties by adding selected additives that will confer bioPBS with comparable properties to that of current counterparts such as polypropylene (PP) for specific applications in the automotive and household appliances sectors. A total of thirteen materials have been studied and compared, being twelve biocomposites containing combinations of three different additives: a commercial red colourant, itaconic acid (IA) to enhance colour fixation and zirconia (ZrO2) nanoparticles to maintain at least native PBS mechanical properties. Results show that the combination of IA and the colouring agent tends to slightly yellowish the blend due to the absorbance spectra of IA and also to modify the gloss due to the formation of IA nanocrystals that affects light scattering. In addition, for low amounts of IA (4wt.%), young modulus seems to be kept while elongation at break is even raised. Unexpectedly, a strong aging affect was found after 4 weeks. IA increases the hydrophilic behaviour of the samples and thus seems to accelerate the hydrolisation of the matrix, which is accompanied by an accused disaggregation of phases and an overall softening and rigidization effect. The addition of low amounts of ZrO2 (2wt.%) seems to provide the desired effect for hardening the surface while almost not affecting the other properties; however, higher amounts tends to form aggregates saturating the compounds. As a conclusion, IA might be a good candidate for colour fixing in biobased polymers.

show abstract

Section: Mechanical Testsmentioning

confidence: 52%

Colour Fixation Strategies on Sustainable Polybutylene Succinate Using Biobased Itaconic Acid

García-Quiles¹,

Vidal²,

Puglia³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…On the one hand, Zirconia affects in the elongation at break and an overall fall can be observed (F6 decreases a 24%). Nevertheless, the data dispersion is broad, that indicates the appearance of agglomerates producing a stress concentrating effect favoring a premature rupture [ 39 ]. All in all, this decrease is noticeably found for 4 wt % of ZrO 2 , which is a quite positive result for such a high content of zirconium if compared with other similar studies using it as reinforcement agent in polymers.…”

Section: Resultsmentioning

confidence: 99%

Color Fixation Strategies on Sustainable Poly-Butylene Succinate Using Biobased Itaconic Acid

Quiles¹,

Vidal²,

Luzi

et al. 2020

Polymers

View full text Add to dashboard Cite

Biopo-lybutylene succinate (bioPBS) is gaining attention in the biodegradable polymer market due to its promising properties, such as high biodegradability and processing versatility, representing a potential sustainable replacement for fossil-based commodities. However, there is still a need to enhance its properties for certain applications, with aesthetical and mechanical properties being a challenge. The aim of the present work is to improve these properties by adding selected additives that will confer bioPBS with comparable properties to that of current counterparts such as polypropylene (PP) for specific applications in the automotive and household appliances sectors. A total of thirteen materials have been studied and compared, being twelve biocomposites containing combinations of three different additives: a commercial red colorant, itaconic acid (IA) to enhance color fixation and zirconia (ZrO2) nanoparticles to maintain at least native PBS mechanical properties. The results show that the combination of IA and the coloring agent tends to slightly yellowish the blend due to the absorbance spectra of IA and also to modify the gloss due to the formation of IA nanocrystals that affects light scattering. In addition, for low amounts of IA (4 wt %), Young’s Modulus seems to be kept while elongation at break is even raised. Unexpectedly, a strong aging affect was found after four weeks. IA increases the hydrophilic behavior of the samples and thus seems to accelerate the hydrolization of the matrix, which is accompanied by an accused disaggregation of phases and an overall softening and rigidization effect. The addition of low amounts of ZrO2 (2 wt %) seems to provide the desired effect for hardening the surface while almost not affecting the other properties; however, higher amounts tends to form aggregates saturating the compounds. As a conclusion, IA might be a good candidate for color fixing in biobased polymers.

show abstract

“…In those composite materials, functional particles are found to localize into one component in each polymer blend (selective localization). [21][22][23] The 3D paths of the bicontinuous structure facilitate the connectivity of functional particles leading to enhancement of, for example, electrical conductivity and/or thermal conductivity.…”

Section: )mentioning

confidence: 99%

Creep Behavior of a Polymer Blend Melt and 3D Observation of the Deformed Bicontinuous Structure by a High-contrast X-ray CT

Takahashi

Hatakeyama

Nishikawa

2016

J. Soc. Rheol., Jpn

Self Cite

View full text Add to dashboard Cite

Dynamic viscoelastic, creep and steady shear flow measurements are made on a polymer blend melt with a phaseseparated bicontinuous structure. 3D structures at quiescent, constant-stress and constant-shear-rate states are observed by a high-contrast X-ray computerized tomography (CT) after quick quenching of each sample. At the quiescent state, the frequency dependence of the storage modulus at 200 o C shows a power law behavior with the exponent of 0.84. In the shear rate range (at the small shear stress s = 100 Pa) where partial relaxation of the interface of the blend is possible, a peculiar plate-like pattern in the deformed bicontinuous network is observed in the through view of the X-ray CT image. At higher shear rates (at the higher shear stress s = 1000 Pa) where the interface relaxation is suppressed, another peculiar short plate-like pattern appears in the edge view. When the shear rate in the steady shear flow is equal to the average shear rate in the creep test, a very similar deformed pattern of the interface is observed.At the macroscopic shear strain of 3.2 in the creep test at 100 Pa, the observed strain of the deformed bicontinuous network has a distribution and the majority are much smaller than the strain expected from the affine deformation assumption. An average orientation angle of the deformed network at the shear strain of 3.2 corresponds to the angle given by the affine deformation of the shear strain 1.35.

show abstract

Dispersion State of Zirconium Oxide Particles in Polymer Blends and Viscoelastic Behavior of the Composites

Cited by 4 publications

References 24 publications

Colour Fixation Strategies on Sustainable Polybutylene Succinate Using Biobased Itaconic Acid

Colour Fixation Strategies on Sustainable Polybutylene Succinate Using Biobased Itaconic Acid

Color Fixation Strategies on Sustainable Poly-Butylene Succinate Using Biobased Itaconic Acid

Creep Behavior of a Polymer Blend Melt and 3D Observation of the Deformed Bicontinuous Structure by a High-contrast X-ray CT

Contact Info

Product

Resources

About