Comprehensive characterization of silica-modified silicon rubbers

Chiulan, Ioana; Panaitescu, Denis Mihaela; Radu, Elena; Frone, Adriana Nicoleta; Gabor, Raluca Augusta; Nicolae, Cristian Andi; Jinescu, George; Tofan, Vlad; Chinga-Carrasco, Gary

doi:10.1016/j.jmbbm.2019.103427

Cited by 17 publications

(16 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum stress at the break point exhibited an increase with 9.8% and 11.6% as results of immersion in SBF or implantation in pigs, as compared with the sample before any aging conditions, which indicates an increased stiffness. This result is in agreement with our previous study [18], where the elastomers subjected to intensive stress fatigue generated mechanically by means of a flexometer, exhibited an increase with 12.4% of the tensile strength after 1 million cycles. In this case, the increase of tensile strength after simulated and in vivo tests may be due to a surface mineralization [20].…”

Section: Mechanical Characterizationsupporting

confidence: 93%

“…In a previous work, we proved that Elastosil LR 3003/40 can be considered a material of choice for the development of pelvic prosthesis, from the point of view of mechanical strength, even without reinforcing [18]. Preliminary in vitro biological tests made on L929 fibroblasts mouse cells showed a good short-time cytocompatibility, while the measurement of the cytokine secretion revealed no inflammatory response [18]. In this study we focused on the host tissue response in contact with films made of neat silicone elastomer and the ability of this material to keep its mechanical performance in a living organism.…”

Section: Resultsmentioning

confidence: 96%

“…The failure of silicone implants is attributed to different factors, such as weakening of polymer network due to penetration of lipids and mechanical fatigue caused by the body movements [13,14]. In a previous work, we proved that Elastosil LR 3003/40 can be considered a material of choice for the development of pelvic prosthesis, from the point of view of mechanical strength, even without reinforcing [18]. Preliminary in vitro biological tests made on L929 fibroblasts mouse cells showed a good short-time cytocompatibility, while the measurement of the cytokine secretion revealed no inflammatory response [18].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Perspectives of Silicone Elastomere Implants Use in Preventing Postoperative Complications in Pelvic Exenteration for Advanced Cancers

Jinescu¹,

Bacalbaşa²,

Evtodiev³

et al. 2020

Rev. Chim.

Self Cite

View full text Add to dashboard Cite

In this work, silicone elastomer films with potential to be used as implantable pelvic prosthesis were prepared and their bioactivity was studied both in vitro and in vivo environment. Tensile tests, hardness measurement and compression analysis revealed no significant decrease of the mechanical performance after in vitro hydrolytic degradation in simulated body fluids. The in vivo biocompatibility of films was assessed by implanting them subcutaneously in swine model, for 30 days. Their mechanical characteristics were similar to those of samples immersed in simulated body fluids, for the same time interval. No sign of fibrosis or necrosis were detected from the histological analysis performed on the tissue surrounding the films. In combination, these results indicate that this material has a very good resistance to mechanical and chemical fatigue, do not release any toxic degradation products and, therefore, has great potential as to be used further for preparation of pelvic prosthesis.

show abstract

Section: Mechanical Characterizationsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Perspectives of Silicone Elastomere Implants Use in Preventing Postoperative Complications in Pelvic Exenteration for Advanced Cancers

Jinescu¹,

Bacalbaşa²,

Evtodiev³

et al. 2020

Rev. Chim.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Some of the most used materials for flexible dielectrics are polysiloxanes, such as poly(dimethylsiloxane) (PDMS), which are characterized by a fully saturated backbone of alternating silicon and oxygen atoms. This structure results in excellent properties, such as a high elasticity even at low-temperature, high-temperature resistance, resistance to radiation, chemicals and climatic constraints, easy processability and biocompatibility [ 10 , 11 , 12 , 13 , 14 , 15 ]. However, the mechanical properties, and especially the stiffness, of unfilled polysiloxanes are poor.…”

Section: Introductionmentioning

confidence: 99%

Properties of Polysiloxane/Nanosilica Nanodielectrics for Wearable Electronic Devices

et al. 2021

Self Cite

View full text Add to dashboard Cite

Polymer nanodielectrics characterized by good flexibility, processability, low dielectric loss and high dielectric permittivity are materials of interest for wearable electronic devices and intelligent textiles, and are highly in demand in robotics. In this study, an easily scalable and environmentally friendly method was applied to obtain polysiloxane/nanosilica nanocomposites with a large content of nanofiller, of up to 30% by weight. Nanosilica was dispersed both as individual particles and as agglomerates; in nanocomposites with a lower amount of filler, the former prevailed, and at over 20 wt% nanosilica the agglomerates predominated. An improvement of both the tensile strength and modulus was observed for nanocomposites with 5–15 wt% nanosilica, and a strong increase of the storage modulus was observed with the increase of nanofiller concentration. Furthermore, an increase of the storage modulus of up to seven times was observed in the nanocomposites with 30 wt% nanosilica. The tensile modulus was well fitted by models that consider the aggregation of nanoparticles and the role of the interface. The dielectric spectra showed an increase of the real part of the complex relative permittivity with 33% for 30 wt% nanosilica in nanocomposites at a frequency of 1 KHz, whereas the loss tangent values were lower than 0.02 for all tested nanodielectrics in the radio frequency range between 1 KHz and 1 MHz. The polysiloxane–nanosilica nanocomposites developed in this work showed good flexibility; however, they also showed increased stiffness along with a stronger dielectric response than the unfilled polysiloxane, which recommends them as dielectric substrates for wearable electronic devices.

show abstract

“…Therefore, it is imperative to develop an effective strategy to enhance the mechanical properties and erosion resistance of ALSR. To overcome these problems, an effective method is to disperse nanoparticles into the ALSR, such as clay [15], TiO 2 [16][17][18][19], SiO 2 [20][21][22][23], graphene [24][25][26][27], carbon nanotubes [28,29], boron nitride (BN) [30,31], and aluminum nitride (AlN) [32]. However, due to the high permittivities and poor compatibility of these materials with ALSR, the dielectric constant of the ALSR signi cantly increases [33].…”

Section: Introductionmentioning

confidence: 99%

Efficiently Enhancing Low-dielectric Properties and Chemical Resistances of Addition-cure Liquid Silicone Rubber by Filling With Silicone-modified Eucommia Gum Nanofiller

Sheng-pei

Wang

et al. 2021

Preprint

View full text Add to dashboard Cite

It is of great interest and remains a challenge to simultaneously improve the low-dielectric properties and chemical resistances of addition-cure liquid silicone rubber (ALSR). In this work, we proposed an efficient approach to address this issue by filling silicone-modified eucommia gum nanofiller (SEUG) into ALSR. By adding 5 wt% SEUG, the dielectric constant of the SEUG/ALSR composite rubber was significantly lower than that of neat ALSR both at 102 Hz, 103 Hz and 104 Hz. Simultaneously, the SEUG/ALSR composite rubber exhibited better mechanical and insulation properties than the neat ALSR after HCl, NaCl, and oil resistance tests. Our findings demonstrated the great potential for fabricating silicone rubber with low-dielectric properties and erosion resistance by the utilization natural biomass rubber material, endowing it with excellent mechanical performance and degradability.

show abstract

Comprehensive characterization of silica-modified silicon rubbers

Cited by 17 publications

References 30 publications

Perspectives of Silicone Elastomere Implants Use in Preventing Postoperative Complications in Pelvic Exenteration for Advanced Cancers

Perspectives of Silicone Elastomere Implants Use in Preventing Postoperative Complications in Pelvic Exenteration for Advanced Cancers

Properties of Polysiloxane/Nanosilica Nanodielectrics for Wearable Electronic Devices

Efficiently Enhancing Low-dielectric Properties and Chemical Resistances of Addition-cure Liquid Silicone Rubber by Filling With Silicone-modified Eucommia Gum Nanofiller

Contact Info

Product

Resources

About