Synthesis and Characterization of Inorganic-Organic Hybrid Materials Derived from Polysilsesquioxanes (POSS)

Skaria, Sunny; Schricker, Scott R.

doi:10.1080/10601321003659440

Cited by 28 publications

(18 citation statements)

References 45 publications

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“…This can be attributed to the migration of POSS into surface. Improvement of biocompatibility and viability of cells by adding POSS into polyurethane has been reported before [22,31,32]. However, results shown here shows that the amount of POSS on the surface is a crucial matter in converting a non-biocompatible polyurethane to a biocompatible surface.…”

Section: Resultscontrasting

confidence: 71%

Physically Blended and Chemically Modified Polyurethane Hybrid Nanocoatings Using Polyhedral Oligomeric Silsesquioxane Nano Building Blocks: Surface Studies and Biocompatibility Evaluations

Yahyaei

Mohseni

Ghanbari

2015

J Inorg Organomet Polym

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Organic-inorganic hybrids are promising materials to use as surface coating. Novel types of hybrids coatings containing polyhedral oligomeric silsesquioxane (POSS) have found interests due to their effects on surface properties. In this study, two types of POSS were added to a two-component polyurethane coating either by physical mixing or chemical linking between POSS and matrix and the affection on the surface properties was investigated. Results showed that addition of an open cage POSS by physical mixing caused segregation of POSS at the surface, while by addition of a POSS containing hydroxyl functional group, it distributed in bulk and surface uniformly. POSS existence on the surface was approved by atomic force microscopy and scanning electron microscopy equipped with energy dispersive X-ray technique. Contact angle measurements showed that the surface free energy of the films decreased from 35.3 mJ/m 2 for polyurethane to 13.73 and 11.39 mJ/m 2 for chemically and physically processed films, respectively. Biocompatibility of the blank polyurethane and hybrid materials were studied by an MTT assay. Results revealed that cells prefer to have interface with the surface of physically mixed POSS with the matrix in comparison with chemically added POSS.

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Section: Resultscontrasting

confidence: 71%

Physically Blended and Chemically Modified Polyurethane Hybrid Nanocoatings Using Polyhedral Oligomeric Silsesquioxane Nano Building Blocks: Surface Studies and Biocompatibility Evaluations

Yahyaei

Mohseni

Ghanbari

2015

J Inorg Organomet Polym

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“…Among these, cube octameric silsesquioxanes (RSiO 1.5 ) 8 have been recently covalently bonded to peptide and glycoside moieties as well as such polymers as e.g., polylactide (PLA), poly(ethylene oxide) (PEO), glycomethacrylate or poly(caprolactone) (PCL) [2,7,8,9,10]. …”

Section: Introductionmentioning

confidence: 99%

Star-Shaped and Linear POSS-Polylactide Hybrid Copolymers

et al. 2015

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Novel octakis-2[(6-hydroxyhexyl)thio]ethyl-octasilsesquioxane (POSS-S-OH) as well as heptaisobutyl-2[(6-hydroxyhexyl)thio]ethyl-octasilsesquioxane (iBu-POSS-S-OH) were synthesized. POSS structures, bearing both types of groups i.e., 2[(6-hydroxyhexyl)thio]ethyl and the vinyl ones, pendant from the octahedral cage are also described. The synthetic pathway involved thiol-ene click reaction of 6-mercapto-1-hexanol (MCH) to octavinyloctasilsesquioxane (POSS-Vi), and heptaisobutylvinyloctasilsesquioxane (iBu-POSS-Vi), in the presence of 2,2′-azobisisobutyronitrile. The functionalized silsesquioxane cages of regular octahedral structure were used further as initiators for ring opening polymerization of l,l-dilactide, catalyzed by tin (II) 2-ethylhexanoate. The polymerization afforded biodegradable hybrid star shape and linear systems with an octasilsesquioxane cage as a core, bearing polylactide arm(s).

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“…2‐(4‐Phenylphenoxy)ethanol (BP‐C2‐OH) and 6‐(4‐phenylphenoxy)hexanol (BP‐C6‐OH) were prepared by similar literature procedure of 2‐phenylethanol. Octakis(propenyl succinicanhydrido)polyhedral octasilicate (OS‐SA) was prepared using a literature method . Glass substrates (square microscope cover glass) were purchased from MATSUNAMI Glass (Osaka, Japan) and used without any treatments or cleaned before use.…”

Section: Methodsmentioning

confidence: 99%

Syntheses of biphenyl‐terminated polyhedral oligomeric octasilicate‐core dendrimers and their single‐component optical transparent free‐standing thermoplastic films

Irie

Naka

2015

J. Polym. Sci. Part A: Polym. Chem.

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2‐Biphenylethyl and 2‐biphenylhexyl‐terminated polyhedral oligomeric octasilicate (OS)‐core polyester‐typed dendrimers, denoted as OS‐C2‐BP and OS‐C6‐BP, respectively, were prepared by ring‐opening reaction and subsequent condensation of octakis(propenyl succinicanhydrido)polyhedral octasilicate (OS‐SA) with 2‐(4‐phenylphenoxy)ethanol (BP‐C2‐OH) and 6‐(4‐phenylphenoxy)hexanol (BP‐C6‐OH), respectively. OS‐C2‐BP formed a transparent film, whereas OS‐C6‐BP formed an opaque whitish waxy film. The coating film of OS‐C2‐BP was easily peeled off from a substrate and formed a free‐standing film. The results of X‐ray diffraction and differential scanning calorimeter suggest that the film of OS‐C2‐BP was amorphous, whereas OS‐C6‐BP contained crystalline domains. Thermogravimetric analysis of OS‐C2‐BP and OS‐C6‐BP showed 5 wt % weight losses at 362 °C and 283 °C, respectively. OS‐C2‐BP offered higher thermal resistance than OS‐C6‐BP. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1437–1443

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Synthesis and Characterization of Inorganic-Organic Hybrid Materials Derived from Polysilsesquioxanes (POSS)

Cited by 28 publications

References 45 publications

Physically Blended and Chemically Modified Polyurethane Hybrid Nanocoatings Using Polyhedral Oligomeric Silsesquioxane Nano Building Blocks: Surface Studies and Biocompatibility Evaluations

Physically Blended and Chemically Modified Polyurethane Hybrid Nanocoatings Using Polyhedral Oligomeric Silsesquioxane Nano Building Blocks: Surface Studies and Biocompatibility Evaluations

Star-Shaped and Linear POSS-Polylactide Hybrid Copolymers

Syntheses of biphenyl‐terminated polyhedral oligomeric octasilicate‐core dendrimers and their single‐component optical transparent free‐standing thermoplastic films

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