Functional POSS based polyimide nanocomposite for enhanced structural, thermal, antifouling and antibacterial properties

Muhammad, Saz; Niazi, Javed H.; Shawuti, Shalima; Qureshi, Anjum

doi:10.1016/j.mtcomm.2022.103287

Cited by 16 publications

(14 citation statements)

References 25 publications

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“…[ 14 , 16 ]. Organic polymers, primarily polysulfone (PSF) [ 48 , 49 , 50 , 51 , 52 ], poly(ether sulfone) (PES) [ 53 ], polyacrylonitrile (PAN) [ 54 , 55 ], polyamide [ 56 , 57 ], polyimide [ 58 , 59 ], cellulose acetate membrane [ 60 , 61 , 62 , 63 ], polylactic acid [ 64 , 65 , 66 , 67 ], polyvinyl alcohol (PVA) [ 68 , 69 , 70 ], poly-(vinylidene fluoride) (PVDF) [ 71 , 72 , 73 , 74 ], and polytetrafluoroethylene (PTFE) [ 75 , 76 , 77 ], are all often employed in water filtering membranes.…”

Section: Introductionmentioning

confidence: 99%

Prospects of Polymeric Nanocomposite Membranes for Water Purification and Scalability and their Health and Environmental Impacts: A Review

2022

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Water shortage is a major worldwide issue. Filtration using genuine polymeric membranes demonstrates excellent pollutant separation capabilities; however, polymeric membranes have restricted uses. Nanocomposite membranes, which are produced by integrating nanofillers into polymeric membrane matrices, may increase filtration. Carbon-based nanoparticles and metal/metal oxide nanoparticles have received the greatest attention. We evaluate the antifouling and permeability performance of nanocomposite membranes and their physical and chemical characteristics and compare nanocomposite membranes to bare membranes. Because of the antibacterial characteristics of nanoparticles and the decreased roughness of the membrane, nanocomposite membranes often have greater antifouling properties. They also have better permeability because of the increased porosity and narrower pore size distribution caused by nanofillers. The concentration of nanofillers affects membrane performance, and the appropriate concentration is determined by both the nanoparticles’ characteristics and the membrane’s composition. Higher nanofiller concentrations than the recommended value result in deficient performance owing to nanoparticle aggregation. Despite substantial studies into nanocomposite membrane manufacturing, most past efforts have been restricted to the laboratory scale, and the long-term membrane durability after nanofiller leakage has not been thoroughly examined.

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Section: Introductionmentioning

confidence: 99%

Prospects of Polymeric Nanocomposite Membranes for Water Purification and Scalability and their Health and Environmental Impacts: A Review

2022

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“…25−27 POSS is one the most popular nanofillers used to form polymeric nanocomposites with enhance mechanical properties and functionality because of its uniform dispersion and infinite functional modifications. 28,29 In order to regulate the content of POSS in a wider range and better improve the mechanical properties of the polymer, it is necessary to adopt a new type of bi-functional POSS to access the main chain of the polymer. Our group and others successfully incorporated bi-functional POSS into the backbone chain of polymers to enhance their mechanical properties (modulus, strength, and hardness).…”

Section: ■ Introductionmentioning

confidence: 99%

“…In this approach, a polymer with high mechanical performance that can assemble into a hierarchical porous structure was designed and synthesized by using bi -functional polyhedral oligomeric silsesquioxane (POSS). POSS is a nanoscale cage structure composed of an inorganic Si–O core (∼0.5 nm) surrounded by organic functional groups. − POSS is one the most popular nanofillers used to form polymeric nanocomposites with enhance mechanical properties and functionality because of its uniform dispersion and infinite functional modifications. , In order to regulate the content of POSS in a wider range and better improve the mechanical properties of the polymer, it is necessary to adopt a new type of bi -functional POSS to access the main chain of the polymer. Our group and others successfully incorporated bi -functional POSS into the backbone chain of polymers to enhance their mechanical properties (modulus, strength, and hardness). − In the present work, POSS units were employed as both nanofiller to improve the mechanical performance and the hydrophobic monomer to facilitate phase separation and assembly.…”

Section: Introductionmentioning

confidence: 99%

Polyhedral Oligomeric Silsesquioxane as a Polarity Mediator and Reinforced Nanofiller for Fabricating Robust and Hierarchical Porous Film for Cell Bioengineering

Wang

Tian

et al. 2022

ACS Appl. Polym. Mater.

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A hierarchical porous polymer film that can provide a balance of mechanical properties and specific surface areas and sustain cell functions has become a major target for material scientists and bioengineers in the past decade. However, the limited availability of materials that exhibit high mechanical performance and easily form hierarchical porous structures hinder the progress in practical application. Here, we show the design of a polyhedral oligomeric silsesquioxane (POSS) hybrid polymer by incorporating a bi-functional glycidyl-propyl POSS (G-POSS) into the epoxy polymer backbone, in which POSS functions as both a nanofiller to reinforce the mechanical performance and as the polarity mediator to induce self-assembly of the polymer chains into a three-dimensional (3D) connected porous structure. Nanoindentation shows that the incorporation of POSS leads to a 25 and 36% increase in modulus and hardness, respectively. Scanning electron microscopy results show that POSS helps tune the hydrophobicity of the polymer and assists in the interface assembly, allowing easy formation of a densely packed two-dimensional or 3D hierarchical porous structure. Culture of mouse embryonic fibroblast cells demonstrates that the hybrid polymer scaffold provides prominent advantages ranging from enhanced cell adhesion to proliferation. Particularly, the 3D hierarchical porous film allows good nutrient supply and cell communication, which better mimics the in vivo microenvironment with less cell morphology change during cell proliferation. Hence, the successful integration of high material strength and easy formation of an interconnected porous structure shows that POSS hybrid polymers have strong potential for applications in the fabrication of cell culture platforms and future translation in tissue repair and regeneration.

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“…[21][22][23][24] POSS has the formula (RSiO 1.5 ) n , where n ≥ 4 and R = H, aryl or organic functional group. 25,26 The inorganic core endows POSS with good thermal and mechanical properties. The peripheral organic groups improve the compatibility between POSS and polymers and the reactive groups can realize the chemical bonding between POSS and polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Polyhedral oligomeric silsesquioxane (POSS), an organic–inorganic hybrid material, consists of Si‐O cores and external organic groups 21–24 . POSS has the formula (RSiO 1.5 ) n , where n ≥ 4 and R = H, aryl or organic functional group 25,26 . The inorganic core endows POSS with good thermal and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

High mechanical strength and low ablation rate of phenolic resin composites incorporated with polyhedral oligomeric silsesquioxane‐modified graphene oxide

Dong

et al. 2022

J of Applied Polymer Sci

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Hybrid composites of phenolic resin are prepared by incorporating graphene oxide (GO) functionalized with aminophenyl silsesquioxane (NH2‐OPS) for different functionalities. The covalent grafting of NH2‐POSS to GO is favorable for its homogeneous dispersion in the polymer matrix. For this purpose, GO is modified with NH2‐OPS to obtain GO‐3NH2‐OPS (GP‐3), GO‐5NH2‐OPS (GP‐5), GO‐8NH2‐OPS (GP‐8), according to the functionality of NH2‐OPS, respectively. The GP samples are then incorporated into phenolic resin (PR) to obtain PR/GP composites. The successful modification for GO with NH2‐OPS is confirmed by Fourier transform infrared spectroscopy, scanning electron microscopy, X‐ray photoelectron spectroscopy and specific surface and pore size analysis. The thermogravimetric analysis results show that the thermal stabilities of GP‐3, GP‐5 and GP‐8 are significantly increased compared with pure GO. Furthermore, the mechanical and ablative properties of the PR/GP composites are effectively enhanced. In particular, with the addition of 0.5 wt% GP‐5, the linear ablation rate of the PR/GP‐5 composite is reduced by 55.5% from 0.128 to 0.057 mm/s and the flexural strength is increased by 80.6% from 47.74 to 86.23 MPa, compared with pure PR.

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Functional POSS based polyimide nanocomposite for enhanced structural, thermal, antifouling and antibacterial properties

Cited by 16 publications

References 25 publications

Prospects of Polymeric Nanocomposite Membranes for Water Purification and Scalability and their Health and Environmental Impacts: A Review

Prospects of Polymeric Nanocomposite Membranes for Water Purification and Scalability and their Health and Environmental Impacts: A Review

Polyhedral Oligomeric Silsesquioxane as a Polarity Mediator and Reinforced Nanofiller for Fabricating Robust and Hierarchical Porous Film for Cell Bioengineering

High mechanical strength and low ablation rate of phenolic resin composites incorporated with polyhedral oligomeric silsesquioxane‐modified graphene oxide

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