نتایج جستجو برای: cellulose properties
تعداد نتایج: 893779 فیلتر نتایج به سال:
Cellulose represents the most abundant renewable and biodegradable polymeric material on earth. Due to its low cost and functional versatility, cellulose has been a key feedstock for the production of chemicals with various properties and applications over the past century. In 2000, the world produces 187 million tons of wood pulp annually. Most of it is used as raw material in the production o...
This chapter gives an introduction on the general aspects of cellulose, natural rubber and their bionanocomposites. A brief literature review on what has been done so far on the cellulose, natural rubber nanocomposites research area is also included in this chapter. This chapter also describes the structure, properties and characterization of cellulose as a biobased nanomaterial in natural rubber.
This paper reports a hybrid nanocomposite of well-aligned zinc oxide (ZnO) nanorods on cellulose and its strain sensing behavior. ZnO nanorods are chemically grown on a cellulose film by using a hydrothermal process, termed as cellulose ZnO hybrid nanocomposite (CEZOHN). CEZOHN is made by seeding and growing of ZnO on the cellulose and its structural properties are investigated. The well-aligne...
Wood and cellulose derivatives, in both fibrous and water-soluble macromolecular form, are emerging as outstanding candidates for organic electronics applications due to their large-scale availability, low cost, and easy processability. Paper and wood fibre-based derivatives are considered to be materials of choice as supports for communication world-wide. The interest in producing inexpensive ...
Purpose: The microcrystalline cellulose is an important ingredient in pharmaceutical, food, cosmetic and other industries. This study aimed at evaluating the physical characteristics of microcrystalline cellulose (CP-MCC), obtained from the raw cotton of Cochlospermum planchonii. Methods: CP-MCC was obtained from the raw cotton by a two-stage sodium hydroxide treatment process followed by sodiu...
Modifying bio-based degradable polymers such as polylactide (PLA) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) with non-degradable agents will compromise the 100% degradability of their resultant composites. This work developed a facile and solvent-free route in order to fabricate 100% bio-based and degradable ternary cellulose/PHBV/PLA composite materials. The effects of ball milling on...
cellulose nanocrystal (cnc) is a type of nanomaterial which is produced by partial hydrolysis of cellulose and elimination of its amorphous regions. cnc has several advantages such biodegradability and safety toward human health. in this study, cnc was produced from cotton linters and methods such transmission electron microscopy which were used for confirmation of nanoscale size production of ...
Graft copolymers of acrylamide on carboxymethyl cellulose (d.s 0.4-0.5) were prepared by the use of ceric ion, ceric ion/reductant molecule initiator systems in aqueous medium. The graft copolymers were characterized by IR spectroscopy. The extent of graft copolymerisation was measured in terms of grafted chains as a function of both ceric ion and ceric ion/reductant molecule concentrations. It...
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Eve Saarikoski Name of the doctoral dissertation Blends of dissolved cellulose with acrylic acid copolymers or microfibrillated cellulose Publisher School of Chemical Technology Unit Department of Biotechnology and Chemical Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 10/2015 Field of research P...
The quest for both strength and toughness is perpetual in advanced material design; unfortunately, these two mechanical properties are generally mutually exclusive. So far there exists only limited success of attaining both strength and toughness, which often needs material-specific, complicated, or expensive synthesis processes and thus can hardly be applicable to other materials. A general me...
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