Preparation and characterization of phosphine oxide based polyurethane/silica nanocomposite via non-isocyanate route

Hoşgör, Zuhal; Kayaman‐Apohan, Nilhan; Karataş, Sevim; Menceloǵlu, Yusuf́ Z.; Güngör, Atilla

doi:10.1016/j.porgcoat.2010.07.010

Cited by 37 publications

(22 citation statements)

References 27 publications

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“…The functionalization with GPTMS, which reacted with the silanol groups on the surface of the MCM-41 adding epoxy groups, owing to the characteristic by new functional groups to MCM-41, and samples grafted with CS shows, in TGA analysis, similar behavior to that observed for PCL functionalized samples. In temperature range between 150 • C and 650 • C, this sample loses 19.4% weight, which indicates the total decomposition of the epoxy and glycidoxypropyl groups as related by Hoşgör et al [21]. This result indicated that GTPMS had been successfully grafted onto the surface of the MCM-41.…”

Section: Thermogravimetric Analysis-tgamentioning

confidence: 54%

“…Spectrum of MCM-41 shows peak of hydroxyl stretching band for both silanol Si-O-H and the water hydroxyls at 3465 cm −1 , in addition to the peak of H-OH water twisting band at 1640 cm −1 . The Si-O vibration and Si-O bond stretching of surface Si-OH groups are shown at 1090 cm −1 and 967 cm −1 , respectively, indicating that they are mainly composed of a silica network [21]. 4000 3500 3000 2500 2000 1500 1000 500…”

Section: Fourier Transform Infrared Spectroscopy-ftirmentioning

confidence: 99%

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Biodegradable Polymers Grafted onto Multifunctional Mesoporous Silica Nanoparticles for Gene Delivery

et al. 2018

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Biodegradable polymer possesses significant potential for applications in different fields, since flexibility gives rise to materials with great physical and mechanical property diversity. The poly-caprolactone (PCL) and chitosan derivatives (CS) have the ability to form scaffolds, which adhere to the surface of mesoporous silica nanoparticles (MSNs) and its porous networks. The novel characteristics of the developed PCL/MSNs and CS/MSNs, such as very low in vivo degradation rate, ordered pore network, uniform and tunable size and shape of the particles, high pore volume and surface area, non-toxicity, and biocompatibility, among others, are responsible for its favorable gene delivery device and makes this conjugation a very good biomaterial for this application. In the present study, we investigated the synthesis of silica nanoparticles MCM-41 covalently grafted with PCL and CS and their use as a potential small interfering RNA (siRNA) carrier. The physical-chemical and morphological characterizations, as well as the applicability of functionalized MSNs as platforms for gene delivery, were assessed. Our results confirmed that MSNs that were successfully functionalized with PCL and CS kept their typical morphology and pore arrangement. Furthermore, their surface modification was successfully held. In vitro biocompatibility and cytotoxicity assays suggest the ability of MSNs to support passive uptake and indicated the potential of this material as a gene delivery system for cervical cancer cells (HeLa).

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Section: Thermogravimetric Analysis-tgamentioning

confidence: 54%

Section: Fourier Transform Infrared Spectroscopy-ftirmentioning

confidence: 99%

Biodegradable Polymers Grafted onto Multifunctional Mesoporous Silica Nanoparticles for Gene Delivery

et al. 2018

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“…Therefore halogen free flame retardants containing phospho rous have attracted more attention for polymer syn thesis in recent years. Z. Hosgöra et al synthesised a novel carbonate modified bis (4 glycidyloxy phenyl) phenyl phosphine oxide according to Stöber method of preparation of phosphine oxide based spherical polyurethane/silica nanocomposites [53].…”

Section: Methodsmentioning

confidence: 99%

“…However, the use of such diisocyanates should be avoided for several reasons as they are very harmful for human health due to acute poisoning [49][50][51][52][53]. Many efforts have thus been dedicated to minimize the amount of diisocyanates involved in the preparation of polyurethane or even better to develop non phosgene and non isocyanate approaches to polyurethane syn thesis in order to improve their biodegradation and chemical recycling.…”

Section: Non Isocyanate Based Polyurethanesmentioning

confidence: 99%

Novel applications of castor oil based polyurethanes: a short review

2015

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Nowadays increasing interest is observed for using of bio derived products replacing petroleum based materials. This may reduce the fuel consumption and result in producing of materials with lower envi ronmental impact. One of such substances is vegetable oil, which possesses unique chemical structure and consists of unsaturation sites, epoxies, hydroxyls, esters and other functional groups along with inherent flu idity characteristics. Such outstanding features enable them to undergo various chemical transformations producing low molecular weight polymeric materials with versatile applications. Our review discusses the synthesis of polyurethane from castor oil and provides an insight of its prominent applications of castor oil based polyurethane as hybrid materials, interpenetrating polymer networks, foams, adhesives, coatings.

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“…Especially, NIPUs prepared from renewable natural resources have been described extensively for their low cost, biocompatibility and possible biodegradability [12][13][14][15][16][17][18]. Recently, for the purpose of improving the properties of NIPUs, several modifications have been exploited [19][20][21][22][23].…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Synthesis and properties of POSS-containing gallic acid-based non-isocyanate polyurethanes coatings

Liu

Chen

et al. 2015

Polymer Degradation and Stability

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Preparation and characterization of phosphine oxide based polyurethane/silica nanocomposite via non-isocyanate route

Cited by 37 publications

References 27 publications

Biodegradable Polymers Grafted onto Multifunctional Mesoporous Silica Nanoparticles for Gene Delivery

Biodegradable Polymers Grafted onto Multifunctional Mesoporous Silica Nanoparticles for Gene Delivery

Novel applications of castor oil based polyurethanes: a short review

Synthesis and properties of POSS-containing gallic acid-based non-isocyanate polyurethanes coatings

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