Mechanical, thermal and optical properties of nanocomposite films prepared by solution mixing of poly(vinyl alcohol) with titania nanoparticles modified with citric acid and vitamin C

Abstract

The aim of this work was to fabricate the nanocomposite films based on poly(vinyl alcohol) and investigate their thermal stability, mechanical and optical properties of nanocomposite films. For this purpose, first, the titanium dioxide nanoparticles surface was modified simultaneously with biocompatible citric acid and vitamin C to prevent their agglomeration in the poly(vinyl alcohol)matrix. Afterward, the modified titanium dioxide nanoparticles were embedded into the poly(vinyl alcohol)matrix via solution casting along with ultrasonic method.

Chemical adsorption of D-sucrose on MWCNTs for compatibility improvement with alanine-based poly(amide-imide) matrix: morphology examination and thermal stability study

Abstract

A simple and fast method has been developed for the covalently functionalized multi-walled carbon nanotubes (MWCNTs) with d-sucrose carbohydrate (MWCNT-Suc) in an aqueous solution. Fourier transform infrared technique confirmed the ester linkage between the MWCNTs and sucrose. Good water solubilization of MWCNTs was obtained. Nanotube-reinforced poly(amide-imide) (PAI) nanocomposites (NCs) were prepared by mixing MWCNT-Suc with alanine amino acid-based PAI matrix.

A facile approach towards functionalization of MWCNTs with vitamin B2 for reinforcing of biodegradable and chiral poly(ester-imide) having L-phenylalanine linkages: morphological and thermal investigations

Abstract

Nanocomposites based on chiral poly(ester-imide) (PEI) and different weight percentages of modified multi-walled carbon nanotubes (MWCNTs) were prepared by solution mixing method. Carboxylated-MWCNTs were functionalized with riboflavin by an efficient, fast and simple strategy under microwave irradiation to improve interfacial interactions and dispersion of CNTs in a PEI matrix.

Production, characterization, and surface morphology of novel aromatic poly(amide-ester-imide)/functionalized TiO2 nanocomposites via ultrasonication assisted process

Abstract

New aromatic poly(amide-ester-imide) (PAEI) was prepared by phase transfer-catalyzed interfacial polycondensation of N,N′-(1,3,5,7-tetraoxo-5,7-dihydropyrrolo[3,4-f]isoindole-2,6(1H,3H)-diyl)bis(4 hydroxybenzamide) diol, with isophthaloyl chloride. The resulting PAEI was characterized by inherent viscosity measurements, solubility test, Fourier transform infrared (FT-IR), and 1H-NMR spectroscopy. Then, the PAEI was used as a polymer matrix for the preparation of PEAI/modified TiO2 nanocomposite (NC).

Preparation of hydrophilic dimethyl 5-sodium sulfoisophthalate/poly(ethylene terephthalate) nanofiber composite membranes for improving antifouling properties

ABSTRACT

In this study, the effect of dimethyl 5-sodium sulfoisophthalate (SSI) nanoparticles (NPs) on the antifouling properties of poly(ethylene terephthalate) (PET) electrospun nanofiber membranes (ENMs) was investigated through the ultrafiltration of C. I. Basic Blue 3. 3 dye. To reveal the tortuous effect of this additive on the antifouling properties, scanning electron microscopy was used for the characterization of the ENM structure and the optimization of the SSI NP content.

A new polyamide adjusted triazinyl-β-cyclodextrin side group embedded magnetic nanoparticles for bacterial capture

Abstract

A new β-cyclodextrin grafted on poly(isophthalamide)/magnetic nanoparticles (CDPA-MNPs) nanocomposite was prepared through magnetic nanoparticles (Fe3O4) embedding onto β-cyclodextrin groups grafted on polyamide via the simple one-pot co-precipitation of aqueous Fe2+/Fe3+ salts method.

Recycled PET/MWCNT-ZnO quantum dot nanocomposites: Adsorption of Cd (II) ion, morphology, thermal and electrical conductivity properties,

Abstract

This paper investigates the possibility of utilizing recycled PET bottle waste as matrix of novel composites. The effect of various MWCNT-ZnO quantum dot (QD) loadings (1, 2 and 4 by weight) on the morphology, thermal, electrical conductivity properties and water treatment of PET was studied. Results showed that the incorporation of MWCNT-ZnO QDs into the PET matrix causes that the pure polymer undergoes transition from electrically insulated to conductive at room temperature.

Chemical surface coating of MWCNTs with riboflavin and its application for the production of poly(ester-imide)/MWCNTs composites containing 4,4′-thiobis(2-tert-butyl-5-methylphenol) linkages: Thermal and morphological properties

ABSTRACT

In this work, carboxylated multi-walled carbon nanotubes (MWCNTs) were functionalized with riboflavin as a biological molecule under microwave irradiation. Solution blending method was used to incorporate different modified MWCNTs content (5, 10, and 15 wt %) into a chiral and biodegradable poly(ester-imide) (PEI) to fabricate PEI-based nanocomposites.

Preparation of hydrophilic dimethyl 5-sodium sulfoisophthalate/poly(ethylene terephthalate) nanofiber composite membranes for improving antifouling properties

ABSTRACT

In this study, the effect of dimethyl 5-sodium sulfoisophthalate (SSI) nanoparticles (NPs) on the antifouling properties of poly(ethylene terephthalate) (PET) electrospun nanofiber membranes (ENMs) was investigated through the ultrafiltration of C. I. Basic Blue 3. 3 dye. To reveal the tortuous effect of this additive on the antifouling properties, scanning electron microscopy was used for the characterization of the ENM structure and the optimization of the SSI NP content.