Star-shaped POSS diblock copolymers and their self-assembled films

Pan, Aizhao; Shao, Yang; He, Ling; Zhao, Xiang

doi:10.1039/c4ra03337j

Cited by 26 publications

(21 citation statements)

References 39 publications

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“…From Fig. 8, it can be obviously perceived that incorporation of POSS nanoparticles to the PB chains due to formation of some POSS aggregates on the nanohybrid surface, as reported in the literature [39,40], significantly increase surface roughness. The roughness average value (R a ), calculated by SPM software, for the POSS containing and neat samples were 366 ± 14 and 618 ± 23 nm, respectively.…”

Section: Afm and Cell Culturesupporting

confidence: 54%

In-situ photocrosslinkable nanohybrid elastomer based on polybutadiene/polyhedral oligomeric silsesquioxane

Mirmohammadi

Nekoomanesh‐Haghighi

Gezaz

et al. 2016

Materials Science and Engineering: C

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Hydroxyl functionalized nano-sized POSS or ethyleneglycol as diol monomers was incorporated to hydroxyl-terminated polybutadiene (HTPBD) chain in the presence of fumaryl chloride as extender. Blue light photocrosslinking system based on camphorquinone (photoinitiator) and dimethylaminoethyl methacrylate (accelerator) was applied to cure these two synthesized fumarate based macromers. Self-crosslinkability of unsaturated macromers and also crosslinking in presence of a reactive diluent were investigated in absence and presence of 1,4-butanediol dimethacrylate, respectively. Finally, photocured samples were characterized by XRD, SEM, equilibrium swelling study, TGA, DMTA, AFM and cell culture. The results showed that incorporation of POSS nanoparticle into the polymer matrix with a perfect distribution and dispersion can enhance thermal stability, mechanical and biocompatibility properties which can prove a good potential of this in-situ photocrosslinkable nanohybrid in medical applications.

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Section: Afm and Cell Culturesupporting

confidence: 54%

In-situ photocrosslinkable nanohybrid elastomer based on polybutadiene/polyhedral oligomeric silsesquioxane

Mirmohammadi

Nekoomanesh‐Haghighi

Gezaz

et al. 2016

Materials Science and Engineering: C

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“…In Fig. 7a property of hybrid copolymer by introduction of MAPOSS as reported in our previos studies (17)(18).…”

Section: The Permeability Of Filmmentioning

confidence: 62%

“…What is more, the shell substituents could offer immense opportunities for synthesis of organic-inorganic hybrid copolymers (5)(6)(7)(8)(9)(10)(11). It has been reported that the introduction of POSS into polymers can distinctly enhance the native polymer properties in glass transition temperature (13)(14), decomposition temperature (15), surface hardness, mechanical properties, flammability resistance and oxidation resistance attributed to the inorganic octahedral cage structure of POSS (16)(17)(18). However, there is a shortcoming that POSS is readily inclined to agglomerate (19)(20).…”

Section: Introductionmentioning

confidence: 99%

POSS-based glycidyl methacrylate copolymer for transparent and permeable coatings

Zhao

et al. 2016

Soft Materials

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POSS-based GMA hybrid copolymers of P(GMA-MAPOSS) are prepared by methacrylisobutyl polyhedral oligomeric silsesquioxane (MAPOSS) and glycidyl methacrylate (GMA) via free radical polymerization used as coatings. Their morphologies and particle size distributions in CHCl 3 solution are characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS).The effect of MAPOSS content on surface wettability, transparency and permeability of casted films, the adhesive strength and thermostability of hybrid copolymers are further characterized by scanning electron microscopy (SEM), static contact angle (SCA), UV-Vis, mercury porosimeter, mechanical testing, differential scanning calorimetry (DSC) and thermogravimetry (TGA). Compared with homogeneous surface of PGMA film, the surface of P(GMA-MAPOSS) film exhibits heterogeneous morphology due to bulky volume of MAPOSS tending to agglomerate onto the film surface. This micro rough structure helps to enhance the surface hydrophobicity (100-112 ° water static contact angle). While, the surface of cured P(GMA-MAPOSS) film obtains a very homogeneous micro-rough morphology without any agglomeration due to the restricted movements of MAPOSS by 250 nm core-shell particles in CHCl 3 solution. Therefore, the cured P(GMA-MAPOSS) film provides with superior luminousness (>98%), strong adhesive strength (748.2 Pa) and high thermostability (T g =115 ℃). Particularly, the chemically involved MAPOSS into PGMA can effectually improve the permeability of traditional epoxy resin. It is believed that the POSS-based GMA hybrid copolymers P(GMA-MAPOSS) will have great potential applications as transparent and permeable coatings.

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“…(m+n = 8) [28] 12 Inimer -P(St-star-PEGMA) 15 P(PEGMA-star-St) 16 [29] 13 POSS ATRP initiator R′ 0-1 /Figure 3 P(PEGMA-r-MAPOSS) 8 17 [14] POSS monomer Figure 6a 14 POSS ATRP initiator R′ 0-3 / Figure 3 POSS-(PMMA-b-PMAPOSS) 16 18 [16] POSS monomer Figure 6b 15 POSS monomer -P(MAPOSS-co-AZOMA-co-DMAEMA) 19 [32] 16 POSS monomer -P(MIPOSS-alt-VBPEG) 20 [33] 17 POSS RAFT agent R′ 1-1 / Figure 28…”

Section: Introductionmentioning

confidence: 99%

“…Figure 3 shows two typical evolution routes from commercial POSS compounds with octaand monofunctional groups to POSS-hybrid polymers with different topological architectures. As represented in the left of Figure 3, a series of octafunctional POSS ATRP initiators (POSS-(R′ 0 ) 8 ) with multihalogen terminal substituents have been achieved, starting from different commercial POSS compounds ((POSS-(R 0 ) 8 ), such as octakis(dimethylsilyloxy)-POSS, [14] octa(3-ammoniumpropyl) octasilsesquioxane octachloride, [15] octakis(dibromoethyl)-POSS, [16] octa(γ-chloropropyl)-POSS, [6a] and octavinyl-POSS. [17] By incorporating various vinyl monomers with octafunctional POSS ATRP initiators, diverse star-shaped POSS homopolymers have been synthesized.…”

Section: Introductionmentioning

confidence: 99%

Polyhedral Oligomeric Silsesquioxane Hybrid Polymers: Well‐Defined Architectural Design and Potential Functional Applications

Chen

Lin

Zhang

et al. 2019

Macromol. Rapid Commun.

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Polyhedral oligomeric silsesquioxane (POSS)‐hybrid polymers have been successfully employed as functional inorganic–organic hybrid materials for various applications due to their well‐determined structures. The past 6 years has witnessed growing interest in the rational design and synthetic approaches for POSS‐hybrid polymers, driven by the adoption of controlled living radial polymerization and click chemistry. This review addresses developments in the precise manipulation of POSS building blocks via atom transfer radical polymerization, reversible addition–fragmentation chain transfer, and click chemistry. Not only are the structures of POSS‐hybrid polymers tunable in terms of chemical composition, molecular weight, and polydispersity, but they are also controllable in sequential and hierarchical chain topology. Finally, some representative cutting‐edge applications of POSS‐hybrid polymers, including biomedical and energy‐related materials, fabrication of nanostructures, and functional surface coating materials, are highlighted.

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Star-shaped POSS diblock copolymers and their self-assembled films

Abstract: This first example of 16-arm, star-shaped diblock copolymers s-POSS-PMMA277.3-b-P(MA-POSS)5.8,16.4,25.4 can be used as solvent-dependent coatings.

Cited by 26 publications

References 39 publications

In-situ photocrosslinkable nanohybrid elastomer based on polybutadiene/polyhedral oligomeric silsesquioxane

In-situ photocrosslinkable nanohybrid elastomer based on polybutadiene/polyhedral oligomeric silsesquioxane

POSS-based glycidyl methacrylate copolymer for transparent and permeable coatings

Polyhedral Oligomeric Silsesquioxane Hybrid Polymers: Well‐Defined Architectural Design and Potential Functional Applications

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