نتایج جستجو برای: pvoh
تعداد نتایج: 71 فیلتر نتایج به سال:
The elastic modulus of polymeric membranes based on PVOH + H3PO2 TiO2 was studied as a function relative humidity (%RH) and the volumetric fraction water. Tensile stress-strain tests (nominal stress) were performed to determine Young's modulus, yield strength, break stress, strain stress at constant speed 10 mm/min. membrane’s acid concentration kept molar high proton conduction P/OH = 0.3, the...
In the present study the antiviral properties of the bacteriocin subtilosin against Herpes simplex virus type 1 (HSV-1) and the safety and efficacy of a subtilosin-based nanofiber formulation were determined. High concentrations of subtilosin, the cyclical antimicrobial peptide produced by Bacillus amyloliquefaciens, were virucidal against HSV-1. Interestingly, at non-virucidal concentrations, ...
Cost-effective, clean, highly transparent, and flexible as well a coatable packaging material is envisioned to solve or at least mitigate quality preservation issues of organic materials, originating from moisture interaction under ambient conditions. Liquid phase processing coatings using nano-clay polyvinyl alcohol (PVOH) has been developed reported. Detailed analysis the coating revealed per...
Fracture resistance of polymer reinforced with short fibers consists a sum contributions from matrix and fiber fracture, de-bonding pull-out. The existing models for predicting dependence fracture toughness on structural variables were derived the commercially important volume fractions, i.e., vf≥0.1. In this contribution, modification model critical strain energy release rate, GIC, type, lengt...
در ده های اخیر در اثر افزایش آلودگی های محیط زیست و به دنبال آن، تدوین استانداردهای جدید توسط سازمان های مسئول، تلاش های گسترده ای در جهت تولید بسته های بر پایه بیوپلیمرهای زیست تخریب پذیر صورت گرفته است. سلولز بدلیل فراوانی و تجدید پذیری منابع تولید، زیست تخریب پذیری بالا توجه به استفاده از این بیوپلیمر در تولید مواد بسته بندی، بصورت روز افزون در حال افزایش است. در کنار آن کربوکسی متیل سلولز(c...
The presence of the crystalline regions in poly(vinyl alcohol) coating films acts as barrier clusters forcing gas molecules to diffuse a longer pathway amorphous region polymer, where diffusivity and solubility are promoted comparison. Evaluating influence on oxygen property semi-crystalline polymer is thus essential prepare better films. Poly(vinyl with varying induced crystallinity were prepa...
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