نتایج جستجو برای: nano cellulose

تعداد نتایج: 80083  

Journal: :Cellulose 2021

Abstract Several literature reports describe the role of aqueous solutions N -methylmorpholine- -oxide monohydrate (NMMO) as a suitable medium for generation transition metal (nano)particles in or on cellulosic materials and further elaborate its co-reactant salts that are reduced to elemental metal. However, this would assign NMMO reductant, which is contradiction obvious oxidative nature. In ...

Journal: :Cellulose 2023

Abstract To investigate the effect of cellulose matrix on diffusion and conductivity properties ionogels formed with BMIMCl ionic liquid (IL), two types samples were made micro (CMC) nano (CNC) cellulose. The interactions IL studied by 1 H 13 C NMR solid-state spectroscopy. cation [BMIM] + self-diffusion coefficient was calculated based Fast Field Cycling relaxation measurements. measured therm...

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

در این رساله، طراحی، اجراء و مدلسازی فرآیند nano-edm مورد بررسی و تحقیق قرار گرفت. به منظور تولید نانو- ابزار مناسب برای فرآیند nano-edm یک دستگاه اتوماتیک طراحی و ساخته شد که با استفاده از آن، تاثیر متغیرهای فرآیند ساخت بر خصوصیات نانو- ابزار مورد تحقیق قرار گرفت. با شناسایی سطوح بهینه متغیرهای فرآیند ساخت به روش تاگوچی، نانو- ابزارهایی با شعاع نوک حدود 10 نانومتر و ضریب جانبی (نسبت طول به شعا...

A. Mashinchian Moradi P. Aberoomand Azar, Sh. Moradi Sh. Piramoon

TiO2 photo catalyst was prepared in presence of nano SiO2 and Hydroxy Propyl Cellulose (HPC) by sol gel method with Titanium Tetra IsoproPoxide (TTIP) as titanium precursor. Additional effect of HPC in preparation of nano catalyst, and photo catalyst properties measured and characterized by FT-IR, FT-Raman and SEM. The catalyst size and structural properties of the film were determined by .-Ray...

Journal: :ACS Sustainable Chemistry & Engineering 2021

The demand for animal products has significantly increased over the past decades as a result of growing population and heightened standards living. Increased livestock farming does not only yield desired but also significant quantities wastes, particularly manure whose storage application are being monitored with tightening network regulations. problem is that considered merely substrate biogas...

Journal: :Advanced Functional Materials 2023

Abstract Twisted structures are ubiquitous in plants and animals. Cellulose chitin natural polymers that form the structural skeleton of various twisted systems observed across different length scales, ranging from molecular to nano, micro, macro scale. In addition, cellulose helicoidal found be responsible for coloration, enhanced mechanical properties, motion. This review first addresses chit...

Journal: :Journal of Porous Materials 2022

Nowadays, the application range of biomass materials is more and extensive. In this work, peanut shell powder was used as raw material. The cellulose nanofibrils extracted from it by chemical mechanical method. Then, using sol-gel method, methyltrimethoxysilane (MTMS) added to suspension modify it. Finally, nano-cellulose superhydrophobic aerogel prepared freeze-drying polydimethylsiloxane (PDM...

Journal: :Applied sciences 2021

Cellulose nanofibre (CNF), a material composed of ultrafine fibres wood cellulose fibrillated to nano-order level, is expected be widely used because its excellent properties. However, in the field geotechnical engineering, almost no progress has been made development techniques for using CNFs. The authors have focused on use CNF as an additive cement treatment soft ground, where added solidify...

Journal: :Macedonian Journal of Chemistry and Chemical Engineering 2015

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