A Negative Index Nonagonal CSRR Metamaterial-Based Compact Flexible Planar Monopole Antenna for Ultrawideband Applications Using Viscose-Wool Felt

In this paper, a compact textile ultrawideband (UWB) planar monopole antenna loaded with a metamaterial unit cell array (MTMUCA) structure with epsilon-negative (ENG) and near-zero refractive index (NZRI) properties is proposed. The proposed MTMUCA was constructed based on a combination of a rectangular- and a nonagonal-shaped unit cell. The size of the antenna was 0.825 λ0 × 0.75 λ0 × 0.075 λ0, whereas each MTMUCA was sized at 0.312 λ0 × 0.312 λ0, with respect to a free space wavelength of 7.5 GHz. The antenna was fabricated using viscose-wool felt due to its strong metal–polymer adhesion. A naturally available polymer, wool, and a human-made polymer, viscose, that was derived from regenerated cellulose fiber were used in the manufacturing of the adopted viscose-wool felt. The MTMUCA exhibits the characteristics of ENG, with a bandwidth (BW) of 11.68 GHz and an NZRI BW of 8.5 GHz. The MTMUCA was incorporated on the planar monopole to behave as a shunt LC resonator, and its working principles were described using an equivalent circuit. The results indicate a 10 dB impedance fractional bandwidth of 142% (from 2.55 to 15 GHz) in simulations, and 138.84% (from 2.63 to 14.57 GHz) in measurements obtained by the textile UWB antenna. A peak realized gain of 4.84 dBi and 4.4 dBi was achieved in simulations and measurements, respectively. A satisfactory agreement between simulations and experiments was achieved, indicating the potential of the proposed negative index metamaterial-based antenna for microwave applications.

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Comparative Study on Structural Performance of Several New Regenerated Cellulose Fibers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.573-574.174 ◽

2012 ◽

Vol 573-574 ◽

pp. 174-180

Author(s):

Rong Zhou ◽

Chun Guang Li ◽

Ming Xia Yang

Keyword(s):

Cellulose Fiber ◽

Degree Of Polymerization ◽

Structural Performance ◽

Regenerated Cellulose ◽

Pulp Fiber ◽

Bast Fiber ◽

Bamboo Pulp ◽

Lyocell Fiber ◽

Regenerated Cellulose Fiber ◽

Sectional Shape

Regenerated cellulose fiber is the most widely-used and most variety of cellulose fiber. Five categories and ten kinds of fibers such as lyocell fiber, viscose fiber, modal fiber, bamboo pulp fiber, and sheng-bast fiber were chosen as the research object. The sectional shape, crystallinity and degree of polymerization of fibers were tested and analysis, to explore the nature of the reasons for the formation of fiber performance difference, and to verify through experiments.

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Preparation and Characterization of Cellulose Films with Curcumin

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.834-836.555 ◽

2013 ◽

Vol 834-836 ◽

pp. 555-558

Author(s):

Jaranya Suksulap ◽

Potjanart Suwanruji ◽

Jantip Setthayanond

Keyword(s):

Tensile Testing ◽

Color Change ◽

Sodium Hydroxide Solution ◽

Cellulose Fiber ◽

Regenerated Cellulose ◽

Color Strength ◽

X Ray ◽

Cellulose Films ◽

Regenerated Cellulose Fiber

The cellulose film was prepared from regenerated cellulose fiber residue by dissolving the cellulose in sodium hydroxide solution at low temperature (-15 °C). The properties of the prepared film were investigated by tensile testing, Scanning Electron Microscope (SEM), X-ray Diffractometer (XRD) and also swelling ratio. Curcumin was added into the film with three different concentrations. The color strength of the curcumin-added film was evaluated and the color change of this film in different pH was also reported.

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Effect of regenerated cellulose fiber on the properties and microstructure of emulsion model system from meat batters

Food Hydrocolloids ◽

10.1016/j.foodhyd.2018.07.044 ◽

2019 ◽

Vol 87 ◽

pp. 83-89 ◽

Cited By ~ 16

Author(s):

Yinyu Zhao ◽

Qin Hou ◽

Songmin Cao ◽

Yan Wang ◽

Guanghong Zhou ◽

...

Keyword(s):

Cellulose Fiber ◽

Model System ◽

Regenerated Cellulose ◽

Emulsion Model ◽

Regenerated Cellulose Fiber ◽

Meat Batters

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Regenerated Cellulose-Based Denim Fabric for Tropical Regions: An Analytical Study on Making Denim Comfortable

Journal of Textiles ◽

10.1155/2016/4614168 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Annu Kumari ◽

Karan Khurana

Keyword(s):

Analytical Study ◽

Natural Fiber ◽

Cellulose Fiber ◽

Regenerated Cellulose ◽

Age Group ◽

Tropical Regions ◽

Denim Fabric ◽

Regenerated Cellulose Fiber ◽

The Masses ◽

Garment Design

Denim is no more “work wear’’ in the present era. More than a need, it is a fashion commodity for every age group, specifically for youth. Garments with multiple permutations and combinations of denim fabric variables like fibers, yarns, and Lycra % and weaving techniques are available with differing garment design statements, but the comfort aspect is slightly ignored. To cater for the masses living in hot and humid areas, a denim fabric is being projected with varying garment constructional parameters. Regenerated cellulose-based fibers/yarns are considered as ecofriendly, cool, soft, fairly strong, and durable among other man-made and natural fiber-based yarns. The present study is an attempt to develop comfortable denim clothing using regenerated cellulose fiber derivatives, maintaining its traditional rustic look for tropical regions. Fabric performance evaluation methods were used to ascertain the performance of the newly developed clothing.

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Preparation of regenerated cellulose fiber via carbonation. I. Carbonation and dissolution in an aqueous NaOH solution

Fibers and Polymers ◽

10.1007/bf02875361 ◽

2002 ◽

Vol 3 (1) ◽

pp. 1-7 ◽

Cited By ~ 14

Author(s):

Sang Youn Oh ◽

Dong Il Yoo ◽

Younsook Shin ◽

Wha Seop Lee ◽

Seong Mu Jo

Keyword(s):

Cellulose Fiber ◽

Regenerated Cellulose ◽

Naoh Solution ◽

Regenerated Cellulose Fiber

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The Research Development of Cellulose Acetate Fiber and Cellulose Acetate Nanofiber Used as Filtering Materials

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.671.279 ◽

2015 ◽

Vol 671 ◽

pp. 279-284 ◽

Cited By ~ 10

Author(s):

Xiang Ping Si ◽

Shu Jie Zhang ◽

Yun Chen ◽

Jian Hua Cao ◽

Zhi Xiang Cao ◽

...

Keyword(s):

Cellulose Acetate ◽

Cellulose Fiber ◽

Filter Material ◽

Raw Material ◽

Regenerated Cellulose ◽

Research Development ◽

Air Filter ◽

Filter Materials ◽

Cellulose Acetate Fiber ◽

Regenerated Cellulose Fiber

Cellulose acetate(CA) fiber is a kind of regenerated cellulose fiber that with cellulose and acetic acid as raw material,and obtained through esterification reaction.The fiber has features of environmental protection,natural,non-toxic and good degradability.CA nanofiber is prepared by the electrostatic spinning technology has excellent performance and has been closely watched.The application of CA fiber and CA nanofiber in filtering materials was summarized.The application of CA fiber in cigarette filter holder and the research development of CA nanofiber in air filter materials, biomedical filter material,metal ions adsorption and other filter material was emphaticly expounded.

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