Abstract In this work, the effect of two different types bioactive coatings on properties 3D printed poly(lactic acid)/montmorillonite (PLA/MMT) nanocomposite scaffolds was examined. To improve their suitability for bone tissue engineering applications, PLA were coated with (i) ordered mesoporous Strontium bioglass (SrBG) and (ii) SrBG nanohydroxyapatite (nHA) using a simple dip coating procedu...

Positively charged chitosan (CS) and negatively montmorillonite (MMT) were layer-by-layer (LBL) assembled on Xuan paper pulp fiber to fabricate an organic/inorganic flame-retardant coating. The achieved a limiting oxygen index (LOI) value of 24.6% when the was treated by 20 bilayers (BLs) CS/MMT coating, its vertical flame properties also improved with less after-flame after-glow times compared...

nanoporous sodium montmorillonite clay (na+-mmt) was used as a support for the immobilization of 1-methyl-3-(trimethoxysilylpropyl)-imidazolium hydrogen sulfate (na+-mmt-[pmim]hso4). this catalyst showed excellent catalytic activity for the preparation of 2-amino-3-cyano-5-oxo-5,6,7,8-tetrahydro-4h-benzopyrans via three-component reactions between aldehydes, dimedone and malononitrile. the proc...

A proper understanding of the mechanical behavior clay minerals is crucial importance in earth sciences, soil mechanics, and geotechnical engineering. Although more than seventy percent all clays are mixed layer types, vast majority previous studies devoted to pure clays, which make hydraulic properties widespread mixed-layer (MLC) its role soils little understood, especially most common illite...

Most gas barrier films produce cracks that lead to a significant loss of integrity when strain is applied. In order fabricate stretchable with low water permeability and high endurance after stretching, we used polydiallydimethylammonium (PDDA) mixed graphene oxide (GO) poly (vinyl alcohol) (PVA) montmorillonite (MMT). These were manufactured by layer-by-layer assembly on an Ecoflex/polydimethy...

UV-curable thermoset resins had been utilized in organic coating industry because of their benefits over conventional adhesives like fast curing, less energy consumption and equipment. In this article, the effects micro nano-scaled reinforcements on mechanical properties a resin were investigated. The are chosen to be Montmorillonite (MMT) micro-scaled Silica (SiO2). reason for choice is that a...

Chitosan, a biocompatible polysaccharide having antimicrobial efficacy, is highly useful for biomedical and other applications. How chitosan properties can be tailored continues to attract intense research interest. Herein, chitosan/carboxymethyl cellulose (CMC) materials filled with montmorillonite (MMT) were thermomechanically processed resulting in excellent nanoclay dispersion. Inclusion of...

New polyurethane (PU) nanocomposites were prepared from a dispersion of 0 - 5% montmorillonite (MMT) clay with isocyanate and soya oil polyol that was synthesized via transesterification of triglycerides to reduce petroleum dependence. FT-IR spectra indicate the presence of hydrogen bonding between nanoclay and the polymer matrix, whereas the exfoliated structure of clay layers was confirmed by...

We report a methodology developed to detect and track stable fluorescent-labeled nanoclay, in polymer-clay nanocomposite films, and in a contact solvent after migration testing. Fluorescein-5-maleimide (fluorescein) or tetramethylrhodamine-5-maleimide (rhodamine) was covalently bonded to organically modified montmorillonite (o-MMT). Fluorescein- and rhodamine-labeled nanoclay showed good therma...

Abstract Epigallocatechin-3-gallate (EGCG) is a plant-derived flavonoid compound with the ability to promote differentiation of human bone marrow-derived mesenchymal stem cells (MSCs) into osteoblasts. However, effect EGCG on osteogenic umbilical cord-derived (HUMSCs) rarely studied. Therefore, in this study, effects are studied HUMSCs by detecting cell proliferation, alkaline phosphatase (ALP)...