Synthesis and characterization of a novel POSS/PS composite via ATRP of branched functionalized POSS

Wang, Wenping; Ding, WeiLiang; Yu, Jie; Fei, Ming; Tang, Jiayuan

doi:10.1007/s10965-012-9948-8

Cited by 14 publications

(6 citation statements)

References 21 publications

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“…23,24 The Si atom bound directly to the benzene ring has a lower chemical shift due to the higher electron density of phenyl groups. 25 The 13 C NMR MAS spectra of the samples before and after capping (Fig. S1†) show a complex band in the range of 125–138 ppm belonging to aromatic groups.…”

Section: Resultsmentioning

confidence: 99%

Oil foams stabilized by POSS/organosilica particle assemblies: application for aerobic oxidation of aromatic alcohols

2022

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Section: Resultsmentioning

confidence: 99%

Oil foams stabilized by POSS/organosilica particle assemblies: application for aerobic oxidation of aromatic alcohols

2022

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“…OvPOSS with eight vinyl groups is easily grafted onto the surface of polymer latexes via one‐step free radical polymerization technique. However, the synthesized composite materials are mainly star‐type rather than network structure due to the steric effect of cage‐like structure of POSS, and those composite materials are soluble in most of the common organic solvents, such as THF, CHCl 3 , dioxane, and toluene . Figure shows the TEM micrographs of the composite latexes.…”

Section: Resultsmentioning

confidence: 99%

“…Octavinyl polyhedral oligomeric silsesquioxane (OvPOSS) with eight vinyl groups is widely applied as polymerizable monomer and successfully incorporated into polystyrene (PS) matrix and poly(vinyl acetate) (PVAC) by means of emulsion copolymerization . However, to the best of our knowledge, there has been no related report on surface treatment of fluorine containing acrylate resin with POSS.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of composite latexes of polyhedral oligomeric silsesquioxane and fluorine containing poly(styrene‐acrylate) by emulsion copolymerization

Liao

Huang

et al. 2016

J of Applied Polymer Sci

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A novel octavinyl polyhedral oligomeric silsesquioxane/fluorine containing poly (styrene-acrylate) (OvPOSS/FPSA) composite latexes with star-type structure was synthesized by emulsion copolymerization. The structures of OvPOSS/FPSA composite materials were characterized by Fourier Transform Infrared, which indicated that OvPOSS could be grafted onto FPSA latexes by emulsion copolymerization. Transmission electron microscopy images disclosed that FPSA latexes possessed obvious core-shell structure and OvPOSS/FPSA composite latexes probably present star-shape structure. Dynamic light scattering data indicated that the average diameter of OvPOSS/FPSA was slightly larger than that of FPSA, which was probably attributed to the encapsulation of POSS cages. Atomic force microscopy photos illustrated that the grafting reaction had increased the roughness of the composite surface. The water contact angle of composite films was found increasing as the percentage of OvPOSS increasing. Thermogravimetric analysis curves demonstrated that the OvPOSS/FPSA composite films displayed much better thermal stability than that of FPSA. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43455.

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“…Although only 5.1% SiO 2 contained in POSS-graft-LCP according to the calculation from average molecular weight, its residue data obtained from TGA results showed that the incorporation of POSS in POSS-graft-LCP changed the thermal decomposition mode and increased the possibility of carbon formation since organosilicone was usually used as flame retardant. [51,52] The phase behaviour and mesomorphism of the M, LLCP, POSS-graft-LCP and POSS-graft-LCP* were investigated by DSC and POM. Typical DSC curves of LCPs are shown in Figure 4, and their phase transition temperatures are summarised in Table 2.…”

Section: Thermal Behaviour and Liquid Crystalline Properties Of Llcp mentioning

confidence: 99%

Synthesis and characterisation of star-shaped liquid crystalline polymer with a POSS core

2015

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The star-shaped POSS-graft-LCP with POSS as the core and liquid crystal polymer, poly{6-(4ʹ-octyloxyphenyl-4″-benzoyl)hexyl acrylate}, as arms was prepared by atom transfer radical polymerisation technique using octa(3-chloropropyl) polyhedral oligomeric silsesquioxane [POSS-(CH 2 CH 2 CH 2 Cl) 8 ] as initiator. For comparison, the linear liquid crystal polymer, poly{6-(4ʹ-octyloxyphenyl-4″-benzoyl)hexyl acrylate} (LLCP), was obtained by conventional radical polymerisation. Both liquid crystal polymers were characterised by FT-IR, 1 H NMR, 13 C NMR, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, polarised optical microscopy and X-ray diffraction analysis. The liquid crystal phase behaviour research demonstrated that both liquid crystal polymers were reversible thermotropic nematic liquid crystal materials. The number of polymerisation degree of every arm attached on POSS in POSS-graft-LCP impacted greatly on the liquid crystal properties and only a small one was necessary for it to exhibit a broad liquid crystal range. Results further demonstrated that the special star-shaped topology of POSS and the eight arms attached helped POSS-graft-LCP form and stabilise liquid crystal phase easily. This research may further expand the way to star-shaped LCPs by employing a variety of (meth)acrylate and other vinyl liquid crystalline monomers.

show abstract

Synthesis and characterization of a novel POSS/PS composite via ATRP of branched functionalized POSS

Cited by 14 publications

References 21 publications

Oil foams stabilized by POSS/organosilica particle assemblies: application for aerobic oxidation of aromatic alcohols

Oil foams stabilized by POSS/organosilica particle assemblies: application for aerobic oxidation of aromatic alcohols

Synthesis of composite latexes of polyhedral oligomeric silsesquioxane and fluorine containing poly(styrene‐acrylate) by emulsion copolymerization

Synthesis and characterisation of star-shaped liquid crystalline polymer with a POSS core

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