نتایج جستجو برای: antimicrobial fibers

تعداد نتایج: 156961  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1388

در سالهای اخیر تلاش زیادی برای سنتز کمپلکس های سوپرامولکول و پلیمرهای کوئوردیناسیونی بر مبنای لیگاندهای آلی چند دندانه شده است. این مواد به دلیل داشتن خواص منحصر به فرد، کاربردهای زیادی در صنعت دارند. سنتز پلیمرهای کوئوردیناسیونی جدید از سرب(ii) در ابعاد بالک(توده) و نانو با استفاده از روش گرادیان دمایی و به روش شاخه جانبی صورت گرفته و با روش طیف سنجی ir و پایداری گرمایی آن ها توسط آنالیزهای وز...

Journal: :Chemical Engineering Journal 2021

• Cotton cellulose was modified via in situ phosphine oxide macromolecules. Phosphorus monomer crosslinked with amine Michael addition reaction. Excellent flame retardancy and durability to 50 laundry cycles achieved. Hydrophilicity comfort properties of the treated fabrics were enhanced. Antimicrobial property achieved silver nano particle treatment. A facile methodology durably modify fibers ...

2017
Alaa J Hassiba Mohamed E El Zowalaty Thomas J Webster Aboubakr M Abdullah Gheyath K Nasrallah Khalil Abdelrazek Khalil Adriaan S Luyt Ahmed A Elzatahry

Herein, novel hybrid nanomaterials were developed for wound dressing applications with antimicrobial properties. Electrospinning was used to fabricate a double layer nanocomposite nanofibrous mat consisting of an upper layer of poly(vinyl alcohol) and chitosan loaded with silver nanoparticles (AgNPs) and a lower layer of polyethylene oxide (PEO) or polyvinylpyrrolidone (PVP) nanofibers loaded w...

C. B. K. Rao N. R. Dakshina Murthy S. R. R. Teja Prathipati,

Brittleness, which was the inherent weakness in High Strength Concrete (HSC), can be avoided by reinforcing the concrete with discontinuous fibers. Reinforcing HSC with more than one fiber is advantageous in an overall improvement of the mechanical performance of the composite. In this experimental study, Hybrid Fiber Reinforced High Strength Concrete (HyFR-HSC) mixes were formed by blending si...

Journal: :International Journal of Pharmaceutics 2021

The treatment of corneal abrasion currently involves the topical administration antibiotics, with moxifloxacin HCl (0.5% w/v) eye drops being one most widely used treatments. Our previous work (Tawfik et al., 2020) involved development coaxial poly-lactic-co-glycolic acid (PLGA) and polyvinylpyrrolidone (PVP) nanofibers loaded antibiotic anti-scarring agent pirfenidone in core shell respectivel...

This paper describes the effects of reinforcement by randomly distributed nylon fibers and addition of nanoclay on some engineering properties of a typical asphalt concrete. The properties of asphalt concrete reinforced by different percentages of 25 mm nylon fibers have been compared with those of the mixtures containing different percentages of nanoclay and those in which both the fibers and ...

Journal: :journal of agricultural science and technology 2010
b. mohebby r. hajihassani

fibers of poplar wood (populus nigra l.) were prepared and oven dried. afterwards, they were acetylated with acetic anhydride without a catalyst. acetylation was carried out for different durations at 120ºc. different weight percentage gains (wpgs) were achieved based on the operating conditions. acetylated fibers were exposed to varying levels of relative humidity to determine equilibrium mois...

Microwave dyeing was carried out under a variety of conditions in terms of the power and time of a microwave to investigate the effects of microwaving on the dyeability of acrylic fibers. It was found that the dyeability of acrylic fibers were significantly improved under microwave irradiation caused by the increased adsorption of the dye into fibers due to the local over heating and an amplifi...

ژورنال: سلامت و محیط زیست 2022

Background and Objective: Nowadays, in metropolitan areas, principled and hygienic waste management is very important. Recycling is one of the most appropriate options in waste management. Hereof, the present study was aimed to investigate the possibility of using textile waste fibers in the manufacture of Medium Density Fiberboard (MDF). Materials and Methods: This experimental study was perf...

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