This study is aimed to investigate the effect of simultaneous incorporation cellulose nanocrystals (CNC) and silver nanoparticles (SN) on mechanical, biodegradability, water vapor permeability polylactic acid (PLA)-based films. PLA films their nanocomposites containing different levels CNC (0.333, 1 1.667 phr) SN (0.333 were prepared by solution casting method. was reacted with acetic anhydride...

Copolymer latexes based on 2-hydroxy ethyl acrylate (2-HEA) and 2-hydroxy ethylmethacrylate (2HEMA) were synthesized with different molar ratios (95/ 05, 90/10 and 85/15) using azo-bisisobutyronitril(ABIN) as initiator and alcoholic solution as solvent. Different molar ratios of monomers was designed to investigate the effect of latexes on the physico-mechanical properties of Portland cement mo...

cross-linked polymeric organogels have attracted much attention in recent years. most synthesized organogels are based on low molecular weight or denderitic materials. the study focuses on the preparation of an alcohol absorbent organogel based on 2-acrylamido-2-methylpropane sulphonic acid (amps) through cross-linking polymerization. polyethylene glycol diacrylate-400 and ammonium persulphate ...

Valeriana officinalis L. (Valerianaceae) is one of the most widely used plants for the treatment of anxiety and insomnia. Usually dry plant extracts, including V. officinalis, are hygroscopic materials with poor physico-mechanical properties that can be directly compressed.A V. officinalis dry extract with moderate hygroscocity is suitable for direct compression, and was obtained by using a sim...

Bioactive calcium silicate cements are widely used to induce mineralization, to cement prosthetic parts, in the management of tooth perforations, and other areas. Nonetheless, they can present clinical disadvantages, such as long setting time and modest physico-mechanical properties. The objective of this work was to evaluate the potential of graphene nanosheets (GNS) to improve two bioactive c...

Very little is known about the nature of the tissue fluid in the oedema of pregnancy toxaemia. Most investigators (Dieckmann, 1942; Taylor, Warner, and Welsh, 1939; Chesley and Chesley, 1943) believe that the abnormal water balance in this condition is caused by a combination of several factors, both mechanical and physico-chemical in nature. There is general acceptance of the fact that the oed...

Twenty one samples of argan oil of different geographical origin (Tidzi, Tamanar, Benaiznassen, Ait mzal, Ait Baha, Ighrem, Aoulouz) and/or prepared following a different process (traditional, mechanical, or industrial) were collected and their physico-chemical properties analyzed. Sample acidity was found between 0.14 and 1.40%, unsaponifiable matter between 0.34 and 0.79%, saponification valu...

Chitosan with a molecular weight (MW) of 10 Da and 13% degree of acetylation (DA) was extracted from the mycelia of the fungus Gongronella butleri USDB 0201 grown in solid substrate fermentation and used to prepare scaffolds by the freezedrying method. The mechanical and biological properties of the fungal chitosan scaffolds were evaluated and compared with those of scaffolds prepared using chi...

The design of hybrid poly-ε-caprolactone (PCL)-self-assembling peptides (SAPs) matrices represents a simple method for the surface functionalization of synthetic scaffolds, which is essential for cell compatibility. This study investigates the influence of increasing concentrations (2.5%, 5%, 10% and 15% w/w SAP compared to PCL) of three different SAPs on the physico-chemical/mechanical and bio...