Novel polycarbonate-based polyurethane elastomers: Composition–property relationship

Špírková, Miléna; Pavličević, Jelena; Strachota, Adam; Poręba, Rafał; Bera, Oskar; Kaprálková, Ludmila; Baldrián, Josef; Šlouf, Miroslav; Lazić, Nada; Budìnski‐Simendìć, Jaroslava

doi:10.1016/j.eurpolymj.2011.01.001

Cited by 148 publications

(128 citation statements)

References 21 publications

Supporting

Mentioning

112

Contrasting

Unclassified

Order By: Relevance

“…The phase signal is related to the energy dissipated by the tapping tip while scanning the surface, and gives information at the nanometric scale about the size and the shape of local rubber heterogeneities, identifying regions with different stiffness [51][52] . The phase signal is related to the energy dissipated by the tapping tip while scanning the surface, and gives information at the nanometric scale about the size and the shape of local rubber heterogeneities, identifying regions with different stiffness [51][52] .…”

Section: Tem and Afm Morphological Analysismentioning

confidence: 99%

The filler–rubber interface in styrene butadiene nanocomposites with anisotropic silica particles: morphology and dynamic properties

et al. 2015

View full text Add to dashboard Cite

Silica-styrene butadiene rubber (SBR) nanocomposites were prepared by using shape-controlled spherical and rod-like silica nanoparticles (NPs) with different aspect ratios (AR = 1-5), obtained by a sol-gel route assisted by a structure directing agent. The nanocomposites were used as models to study the influence of the particle shape on the formation of nanoscale immobilized rubber at the silica-rubber interface and its effect on the dynamic-mechanical behavior. TEM and AFM tapping mode analyses of nanocomposites demonstrated that the silica particles are surrounded by a rubber layer immobilized at the particle surface. The spherical filler showed small contact zones between neighboring particles in contact with thin rubber layers, while anisotropic particles (AR > 2) formed domains of rods preferentially aligned along the main axis. A detailed analysis of the polymer chain mobility by different time domain nuclear magnetic resonance (TD-NMR) techniques evidenced a population of rigid rubber chains surrounding particles, whose amount increases with the particle anisotropy, even in the absence of significant differences in terms of chemical crosslinking. Dynamic measurements demonstrate that rod-like particles induce stronger reinforcement of rubber, increasing with the AR. This was related to the self-alignment of the anisotropic silica particles in domains able to immobilize rubber.

show abstract

Section: Tem and Afm Morphological Analysismentioning

confidence: 99%

The filler–rubber interface in styrene butadiene nanocomposites with anisotropic silica particles: morphology and dynamic properties

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Figure 4 shows the DSC curves for unfilled PC/PU and PC-PU/nano-ZnO composites. Based on the results, it can be observed that the nano-ZnO incorporated did not show any significant impact on the T g of the composites as T g is only affected by two main factors namely, the molecular weight of composites and the chain constitution of PC diols [107,108] .…”

Section: Effects Of Zinc and Its Compounds On Polymer Degradationmentioning

confidence: 90%

“…This was attributed to the addition of hydrogen bonding at the beginning of crosslink disruption. In terms of the shape of the curves, all nano-ZnO filled composites showed single sharp peaks while the unfilled composite showed multiple peaks [108] . This was attributed to the presence of nano-ZnO particles, which altered the physical cross-linking mechanisms of the composites.…”

Section: Effects Of Zinc and Its Compounds On Polymer Degradationmentioning

confidence: 98%

Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Chee

Sin

Bee

et al. 2015

Polymer-Plastics Technology and Engineering

View full text Add to dashboard Cite

In this article, the influences of the metallic filler content upon the thermal degradability of polymer composites such as initial degradation temperature, maximum degradation temperature and char content have been critically reviewed using thermogravimetric analysis. Besides that, the review on the relationship between activation energies of polymer/metal composites, which was obtained from various degrade models, and the content of metallic fillers have also been defined. Other thermal properties such as glass transition temperature (T g ) and melting temperature (T m ) have also been reviewed based on the evaluation of differential scanning calorimetry (DSC) analysis.

show abstract

“…Hence, a wide range of nanoadditives with different types and different properties as reinforcement fillers can be incorporated within the APCs to improve the overall characteristics of these polymer matrices. For instance, Špírková et al synthesized the APC‐based polyurethane (PC‐PU), as well as its NCs filled with different kinds of nanoparticles (NPs) such as organic‐modified clay and zinc oxide (ZnO) NPs. They found that these NCs exhibit excellent mechanical properties .…”

Section: Introductionmentioning

confidence: 99%

Nanocomposites of Polymeric Biomaterials Containing Carbonate Groups: An Overview

Taraghi

Paszkiewicz

Grȩbowicz

et al. 2017

Macro Materials & Eng

View full text Add to dashboard Cite

The modification of biomaterials using nanoadditives can lead to the development of novel materials for a wide variety of biomedical applications such as drug administration systems, tissue engineering, bioresistance coatings, and biomedical instruments. Moreover, a further improvement of mechanical and thermal properties of aforementioned biomaterials while maintaining their dimensional stability is a goal of major scientific researches. Aliphatic polycarbonates (APCs) containing carbonate groups such as poly(trimethylene carbonate), poly(propylene carbonate), poly(ethylene carbonate), poly(dimethyl trimethylene carbonate), etc., have become much more interesting compared to other biodegradable materials due to their unique physical and chemical properties. This review presents the effect of applying different kinds of nanoparticles (NPs) on the mechanical, thermal, and viscoelastic properties as well as dimensional stability and biocompatibility of APCs. The dispersion process of nanofillers within polymer matrices has been divided into two groups, solution and melt mixing techniques. Moreover, synthesis procedures of APC loaded NPs for drug delivery systems and electrospinning of nanofiber mats have also been reviewed. In order to clarify the effect of NPs on the overall characteristics of the APC biomaterials, the detailed mechanism of improving process have been extensively discussed.

show abstract

Novel polycarbonate-based polyurethane elastomers: Composition–property relationship

Cited by 148 publications

References 21 publications

The filler–rubber interface in styrene butadiene nanocomposites with anisotropic silica particles: morphology and dynamic properties

The filler–rubber interface in styrene butadiene nanocomposites with anisotropic silica particles: morphology and dynamic properties

Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Nanocomposites of Polymeric Biomaterials Containing Carbonate Groups: An Overview

Contact Info

Product

Resources

About