the nanoparticles of gold doped with various percentage of copper (cu 10%, 25%, 75%) were synthesized by wet-chemical method at room temperature. copper (ii) sulfate and gold (iii) chloride trihydride was taken as the metal precursor and ascorbic acid as a reducing agent and anhydride maleic as surfactant. the reaction is performed with high-speed stirring at room temperature under nitrogen atm...

Aim of study: In this study, the effect lignocellulosic filler and coupling agent amount on physical mechanical properties produced sugar beet pulp/LDPE composites were researched.
 Material methods: Wood-plastic using compression molding method. The (maleic anhydride grafted polyethylene) (density water uptake analyses) (tensile strength, tensile modulus, elongation at break, flexural imp...

The use of p,α-dimethylstyrene, potentially obtainable from renewable sources, as a substitute for styrene in the synthesis amphiphilic copolymers is reported this work. A series novel poly(p,α-dimethylstyrene-co-maleic anhydride) (SMA) was synthesized, characterized, and studied potential polymeric surfactants. After hydrolysis, solution properties were compared to similar very well-known styr...

N-Ethylmaleimide and maleic anhydride add to the interior face of one anthracene wall with unusual 1,4-regioselectivity, whereas singlet oxygen adds to both anthracene walls with 9,10-regioselectivity.

The chemical modification of wood can be directed to improve various properties, e.g., the dimensional stability, hardness and/or durability against weathering. In this study, a Romanian softwood species Abies alba Mill. was treated and chemically modified using two cyclic acid anhydrides, i.e., maleic succinic, its interfacial properties relative unmodified wood. Structural changes, with focus...

Our research focuses on the characterization of the association and the properties in aqueous solution of nanostructures, particularly on nanotubes composed of amphiphilic alternating copolymers. These copolymers constitute a pH sensitive hydrophilic group (maleic anhydride) alternating with a hydrophobic group. To investigate the role of the nature of the hydrophobic groups on the association,...

In this work, post-consumer polypropylene and wood flour from Pinus elliottii were used to produce wood plastic composites. The effect of polypropylene grafted with itaconic acid used as a coupling agent on mechanical properties, thermal stability and morphology of the composites was investigated and compared with the composite developed with polypropylene grafted with maleic anhydride, commonl...

New routes to the synthesis of various novel chiral maleimides are described. The oxabicyclic anhydride 2 readily available exo-Diels-Alder adduct of furan and maleic anhydride was used as a vehicle, which in turn reacted with hydrochlorides of amino acids 3a-f in the presence of Et3N with release of furan to give the requisite novel chiral imides 4a-f in good to moderate yields. The stereosele...

A coupling process of the hydrogenation of maleic anhydride and the dehydrogenation of 1,4-butanediol has been invented for the synthesis of gamma-butyrolactone over a Cu-Zn catalyst, realizing optimal hydrogen utilization and better energy efficiency.

The exploitation of natural fibers to reinforce polymers is a promising practice. Thus, biocomposites have gained increased attention in automotive, construction, and agricultural sectors, among others. present work reports the reinforcement recycled high-density polyethylene (r-HDPE) with hemp afford composite materials as sustainable analogues conventional wood/plastic (WPC) products. HDPE bo...