دانلود رایگان مقاله لاتین آرگون پلاسما مایکروویو از سایت الزویر
عنوان فارسی مقاله:
اثر آرگون پلاسما مایکروویو بر روی سیستم اتصال گلیکوزیدی و هیدروژن سلولز پنبه
عنوان انگلیسی مقاله:
Effect of microwave argon plasma on the glycosidic and hydrogen bonding system of cotton cellulose
سال انتشار : 2016
برای دانلود رایگان مقاله آرگون پلاسما مایکروویو اینجا کلیک نمایید.
مقدمه انگلیسی مقاله:
1. Introduction
Box–Behnken method in the Design Expert Software is a process optimization software that is used to optimize the output surface response which is influenced by various independent input parameters. The geometry of this design suggests a sphere within the process space such that the surface of the sphere protrudes through each face with the surface of the sphere tangential to the midpoint of each edge of the space (Aslan & Cebeci, 2007). In this work, this software was used to analyze the effect of microwave argon (Ar) plasma on the hydrophilicity of cotton fabric. The output surface response in the study was wicking height and the input parameters were process gas pressure, microwave power in terms of power percentage and exposure time. Plasma processing of a textile material is one of the effective method to modify its surface properties as per a certain application’s requirement (Bengi, Aysun, & Mehmet, 2009; Lia, Zhanga, & Zoua 2015; Porntapin, Meshaya, Worawan, Boonchoat, & Suda, 2016). As the plasma contains energetic particles and the temperature is little higher than the ambient temperature, this cold plasma has the capability to interact with the surface to alter its physio-chemical properties by breaking the cellulose chain, introducing new functional groups and etching the surface. Several plasma sources like DC, RF, DBD, corona and microwave using variety of gases like air, oxygen, argon, helium, hydrogen, fluorinated gas etc., have been used to achieve different types of modifications (Vaideki, Jayakumar, & Rajendran, 2009; Kan & Yuen, 2006; McCord, Hwang, Qiu, Hughes, & Bourham, 2003). Each type of plasma has its own advantages and limitations. Unlike other sources, the striking advantage of microwave assisted plasma source is its very short treatment time. Abidi and Hequet (2005) and Hochart, De Jaeger, and Levalois-Grutzmacher (2003) have successfully converted an inert cotton surface to a reactive one using microwave plasma for further graft polymerization of polymers and also have confirmed the durability of the grafting. Thus the success of plasma treatment lies in the changes induced in structure, crystallinity and morphology of cotton surface. Nishiyama, Langan, and Chanzy (2002) had reported the changes in the IR spectra of crystalline cellulose I with temperature. The shifts in O H stretching region were studied in detail to understand the structural changes in cellulose. In the same work, they had also reported about the changes induced by mechanical effects. The effect of tensile load on the inter and intra molecular hydrogen bonds and C O C glycosidic bond and in turn its effect on the change in the unit cell parameters and monoclinic angle of the cellulose structure was reported by Altaner, Thomas, Fernandes, and Jarvis (2014b). The thermal and/or mechanical effects can result in the shift in IR frequency pertaining to hydrogen bonds due to a change in the distance between donor and acceptor atoms that are involved in the hydrogen bond. These effects lead to
برای دانلود رایگان مقاله آرگون پلاسما مایکروویو اینجا کلیک نمایید.
کلمات کلیدی:
Cellulose - Wikipedia https://en.wikipedia.org/wiki/Cellulose Cellulose is an organic compound with the formula n, a polysaccharide consisting of a linear ... The cellulose content of cotton fiber is 90%, that of wood is 40–50% and that ... This linkage motif contrasts with that for α(1→4)-glycosidic bonds present in .... A strand of cellulose (conformation Iα), showing the hydrogen bonds ... [PDF]Effect of microwave argon plasma on the glycosidic and hydrogen ... iranarze.ir/wp-content/uploads/2016/11/E2695.pdf Aug 22, 2016 - Effect of microwave argon plasma on the glycosidic and hydrogen bonding system of cotton cellulose. S. Prabhu∗, K. Vaideki, S. Anitha. Self-Assembly and Intermolecular Forces When Cellulose and Water ... https://www.hindawi.com/journals/jnm/2013/745979/ by A Chami Khazraji - 2013 - Cited by 8 - Related articles May 16, 2013 - The formation of hydrogen bonds at the cellulose/water interface is shown to ... (two D-glucopyranose units) joined by a 1,4,-beta-glycosidic bond. ... constituent of higher plant cell walls such as those of cotton or wood [5]. ... The descriptions of polymer systems start with a model of an ideal macromolecule. Nanotechnology for Bioenergy and Biofuel Production https://books.google.com/books?isbn=3319454595 Mahendra Rai, Silvio Silvério da Silva - 2017 - Science The cell wall of some algae and bacterial cellulose are rich in Iα, while cotton, wood, ... The crystal structure and hydrogen-bonding system of cellulose Iα and Iβ ... bonding and a concomitant increase in the number of β-1,4-glycosidic bonds ... Effect of microwave argon plasma on the glycosidic and ... https://www.researchgate.net/.../311081398_Effect_of_microwave_argon_plasma_on_t... Jan 20, 2017 - Effect of microwave argon plasma on the glycosidic and hydrogenbonding system of cotton cellulose. Article in Carbohydrate Polymers ... Research Approaches to Sustainable Biomass Systems https://books.google.com/books?isbn=0124046835 Seishu Tojo, Tadashi Hirasawa - 2013 - Technology & Engineering Starch is a glucose polysaccharide that has a-1,4-glycoside linkages (Huber et al., ... Coupling of adjacent cellulose chains by orderly hydrogen bonds and van der ... units in wood and up to 15,000 glucopyranose monomer units in cotton. Searches related to glycosidic and hydrogen bonding system of cotton cellulose cellulose structure cellulose structure and function cellulose crystal lignin starch microcrystalline cellulose google scholar
