نتایج جستجو برای: polyvinyl alcohol film
تعداد نتایج: 211236 فیلتر نتایج به سال:
The purpose of this study was to investigate the effect of additives, poly(ethylene glycol) (PEG) 1450, poloxamer 407, polyvinyl alcohol (PVA) and sodium chloride in order to improve physico-chemical characteristics, encapsulation efficiency and in vitro release of bovine serum albumin, form poly(D,L-lactic-co-glycolic acid) (PLGA) microparticles prepared by the w/o/w solvent evaporation...
Abstract: This work was designed to investigate the simultaneous effect of both water-to-cement (W/C) and polymer-to-cement(P/C) ratios on flexural strength of type V Portland cement pastes containing polyvinyl alcohol. The obtained resultsconfirmed the strong effect of W/C-ratio on the effectiveness of the added polymer so that there exist optimum valuesfor both W/C and P/C-ratios. Pastes prep...
In current study,a hydrogel based on biocompatible polymerwas prepared. The functionalization of polyvinyl alcohol (PVA)with epichlorohydrin(ECH) to produce epichlorohydrin-g-polyvinyl alcohol (PVA/ECH) as a suitable macroinitiator for atom transfer radical polymerization (ATRP) reaction was investigated.ThenN-vinyl pyrrolidone (NVP) waspolymerized on the surface of macroinitiatorin presence of...
Polyvinyl alcohol (PVA) has been used in packaging applications due to its biocompatibility and biodegradability. However, this non-toxic synthetic material belonging a highly hydrophilic polymer poor resistance wet environments, no antibacterial activity, low tensile thermal properties. This study aims prepare characterize PVA-based biocomposite film mixed with antimicrobial white ginger nanoc...
Technological developments have prompted the production of highly advanced smartphones. However, various features cause smartphones to heat up quickly and emit more electromagnetic radiation, which harms human health. Smartphone protection is needed solve these issues. This study aims create a film from S. trifasciata plant based on polyvinyl alcohol (PVA) reduce thermal radiation plants were m...
Single-walled carbon nanotubes (SWCNTs) are widely explored for the ultrashort pulse generation in fiber lasers enabled by pronounced saturable absorption (SA) effect. Despite many remarkable results demonstrated area, degradation of samples inside laser cavity limits widespread use SWCNT-SA. In present work, we investigate mechanism measuring temperature an operating accordance with Raman G-ba...
Coffee is one of the most valued agricultural products regarding its high commercialization rate. During production coffee beans, pulp obtained as main byproducts with a cellulose content more than 30% dry weight. This research focused on value-added potential fiber reinforcement in composite materials. The nanocellulose (NCP) from (CP) was prepared and subsequently used filler to reinforce pol...
Poor wound healing is considered an obstacle in diabetics, which requires effective therapy. Our goal was to investigate the combined effect of mint and silver nanoparticle hydrogel films as wound-healing agents diabetic rats. Thirty rats were arranged into five groups. The prepared through eco-friendly method, excluding toxic solvents diluents. Gel 1 fucidin showed complete on 22nd day, while ...
Mulch films increase soil temperature, maintain moisture, improve water and fertilizer absorption, reduce weed growth. This work studied a mulching film made using polyvinyl alcohol (PVA) lignin extracted from empty fruit bunches (EFBs). The mulch were investigated for opaqueness, biodegradation, water-solubility, mechanical properties. Life cycle assessment (LCA) cost estimate analysis conduct...
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