Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

VIT Fashion Institute of Technology

Silk fibers are a renewable protein biopolymer, which has the excellent mechanical properties and is also biocompatible. It is not only widely used in the textile industry but is also commonly used in medical applications. As silk fibers possess good biocompatibility and bioresorbability properties they were used in ancient times for biomedical engineering and surgical applications. Using silk fiber as a reinforcement for biopolymers could enhance the stiffness of scaffoldings and bone implants. Being a part of the fibrous protein family, silk possesses great mechanical strength, which in turn makes it suitable for use as a biomaterial. The evolution of silkworm silk started with its biomedical application as sutures for wound treatment. As silk fiber possesses excellent characteristics such as biocompatibility, absent or minimal immunogenicity, limited bacterial adhesion and controllable biodegradability, this natural biopolymer has been found to be appropriate for a variety of biomedical engineering applications. Raw silk fiber consists of silk fibroin, which is coated with a protein glue called sericin. Degumming is a surface modification process for the removal of sericin, which allows for wide control of the silk fiber’s properties, making the silk fiber suitable for use in the development and production of novel biocomposites with required mechanical and biodegradable properties. In the absence of sericin, that is, silk after the process of degumming, it can be employed in implantation and cell culture, as it prevents or allows only minimal inflammation. After the degumming process, silk fibers can be directly structured into three-dimensional frameworks called scaffolds. Following the consideration of the material properties and different architectures for fabrication, this chapter also deals with the biomedical and bioengineering applications of silk. © 2019 Elsevier Inc. All rights reserved.

World University root node

Fashion Technology

Chennai Campus

Materials for Biomedical Engineering: Biopolymer Fibers

Silk fiber composites in biomedical applications

In this communication, a new multifunctional Schiff-base (S) obtained by reacting hydrazine with 3,5-dichloro-salicylaldehyde. The sensing ability of S was studied with various metal ions by visual test, UV–Vis and spectrofluorometric techniques in THF:H2O (1:1, v/v) media. Accordingly, visual test was confirmed by changing initial colourless solution of S to yellow upon interaction with Mn2+ while for other ions, it did not respond in natural light. However, same solution composition when it was observed under UV light, it exhibits green fluorescent colour with Zn2+. In order to see more photo physical properties of S-Mn2+ and S-Zn2+ are studied through by spectrophotometric and spectrofluorometric methods respectively. Spectrophotometrically, neat S exhibits a strong absorption band at 365 nm upon interaction with Mn2+, it exhibits a new absorption band at 425 nm. Spectroflurometrically, a new emission peak was observed at 500 nm upon excitation of S-Zn2+ at 390 nm while other metal ions did not exhibit any emission properties. Further, the formation 3:2 binding stoichiometry between S with Mn2+ and Zn2+ were studied by using Job's plot and association constant for were estimated by Benesi-Hilderbrand (BH) method. The detection limit of S for Mn2+ and Zn2+ were found to be 3.6 × 10−7 M and 9.2 × 10−8 M respectively, which is much lower than the WHO guidance of their metal ions in drinking water. The coordination behaviour of S with Mn2+ and Zn2+ are well supported by NMR and theoretical calculations. © 2019 Elsevier B.V.

VIT Unitversity

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Inorganica Chimica Acta

A multifunctional Schiff-base as chromogenic chemosensor for Mn2+ and fluorescent chemosensor for Zn2+ in semi-aqueous environment

The advancement in fibre-reinforced polymer (FRP) innovation have a distinct fascination in executing another sort of strands named as basalt fibre reinforced polymer (BFRP), which has the dominating of being erosion safe, strong and cost effective that deliver a predominant outcome when applied in concrete structure. Besides, the accessible codal provision and aides does not give any suggestions to the use of Basalt bars since basic investigations and significant applications are as yet restricted. The objective of our investigation was progressed by two phases. The initial phase was led by examining the properties on BFRP and STEEL bars & these properties were evaluated and compared with the codal provision. The next phase of this test included testing of eight concrete beams (4 no's of RC beam and 4 no's of BFRP beam) of size 1700mm long × 150mm wide × 250mm profound and to examine the flexural behaviour of both BFRP and RC beam under a two -point load over a clear span of 1550mm until failure. The outcomes of these two phases were discussed in terms of its behaviour in crack, load, flexure and the mode of failure. Additionally, the test outcomes prove that the basalt bars have a great mechanical behaviour over concrete structures and it can be set as a substitution of STEEL bars for light, temporary structures. © 2019 Author(s).

INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019

A study on flexural strength of beam reinforced with basalt fibre bars

At present, the scenario of textile industry has been radically changed to use eco-friendly chemicals and enzymes for various wet processing of wool fibres. In general, wool bio-polishing is not so easy because of its complex fibre structure. The wool fibre has about 18 amino acids with the major composition part that contains proteins (97%) and lipids (1%). The wool fibre has some intrinsic properties (due to its morphological and scale structure) that makes wool fibre tendency to felting and shrinkage. Many research works have been carried out on bio-polishing of wool fibres using various enzymes. In this research work, we made an attempt to synthesize keratinase enzymes for polishing of wool fibres. This is because keratinase enzyme has the ability to attack the disulfide (-S-S-) bond in the keratin substrate, so it can be employed for bio-polishing of wool. The keratinase enzymes were produced by taking sheep wool and soil from sheep cattle through various biological processes. The enzymes produced through the mass culture and the enzymatic activity were observed through keratinase activity assay testing. It is reported that the enzyme production is realized better to the source wool fibre and cattle sand taken. The optimized production process may be the better alternative way for bulk production of keratinase enzyme for bio-polishing of wool fibres. © 2019 World Research Association. All rights reserved.

Research Journal of Chemistry and Environment

Synthesis of keratinase enzyme from sheep wool for bio-polishing

Vast growth has been noticed in the current years toward the use of fibres and clothing in the sportswear garment sector. Comfort properties of sports garments has been considered as one of the main function in developing the sports garment Lot of research work and ideas are taken care by garment manufacturers in making sportswear garments. Many more development in fabrics used for making sports garments especially for athletics were taken place in recent years. Mostly knitted fabrics are mainly used to make sportswear garments, which throws more scope of research and development in developing new knitted fabric structure with related high performance fibres New development of knitted fabric using the interlock construction leads to more space of developing knitted fabric with high comfort properties. Interlock fabrics made with separate kind of yarn in face, back and inlay with various structures enhances to produce knitted fabric with more comfort properties in sportswear. Knitted fabric is produced using different face, back and in lay yarn using interlock weft knitted structure has been carried out in this work and also their properties were studied thoroughly. To achieve more comfort and essential properties in weft knitted interlock fabric to suit sportswear, the fabric in this research work has been produced using yarn made up of cotton, polyester and viscose. Various Knitted fabrics has been produced by altering fabric structure, yarn linear density (Yarn count). The properties of fabric have been analyzed with respect to its air permeability, moisture management and thermal conductivity. © BEIESP.

International Journal of Engineering and Advanced Technology

Detailed investigation of weft knitted interlock fabrics for comfort properties to suit for active and sportswear application

The headway in fiber-fortified polymer (FRP) development have an unmistakable interest in executing another kind of strands named as basalt fiber strengthened polymer (BFRP), which has the overwhelming furthest reaches of being disintegration sheltered, solid and financially savvy that convey a prevalent result when connected in solid structure. Also, the available codal arrangement and associates does not give any proposals to the utilization of BFRP bars since fundamental examinations and noteworthy applications are up 'til now limited. The target of our examination was advanced by two stages. The underlying stage was driven by inspecting the properties on BFRP and STEEL bars&amp; these properties were assessed and contrasted and the codal arrangement. The second period of this test included testing of eight solid bars (4no's of RC bar and 4no's of BFRP bar) of size 1700mm long × 150mm wide × 250mm significant and to inspect the shear conduct of both BFRP and RC pillar under two - point stacking over a reasonable range of 1550mm until disappointment. The results of these two stages were talked about as far as its conduct in split, load, shear and the method of disappointment. Moreover, the test results demonstrate that the basalt bars have an extraordinary mechanical conduct over solid structures and it very well may be set as a substitution of STEEL bars for light, transitory structures. © 2019 Author(s).

CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST)

A study on shear strength of beam reinforced with basalt fibre bars (BFRP)

Asian Textile Journal

Application of spacer fabric on body armour system

In this paper, a new Th4+ ion-selective chromogenic sensor (L) was developed by reacting 1,10-phenanthroline-2,9-dicarbohydrazide with 2-hydroxy naphthaldehyde. The sensing ability of L toward Th4+ was investigated in solution and paper strips loaded with L using spectrophotometric and colorimetric methods. The selective interaction of L was examined with various f-metal ions and other selected metal ions from s-block and d-block elements. Results show that by the colorimetric method in solution-phase dimethyl sulfoxide/H2O (7:3, v/v) and paper strip methods, the naked-eye detectable color change of L occurred from colorless solution to yellow-orange and pale yellow colour upon interacting with Th4+ and Al3+, respectively, whereas other metal ions did not interfere. The ligand L exhibits two absorbance bands at 320 and 375 nm because of ligand-to-ligand charge transfer. Upon interaction with Th4+, L undergoes red shift of both absorption bands and the formation of a new UV-vis band at 335 and 440 nm. The UV-visible spectral studies indicate the formation of a 1:1 host-guest complex between L and Th4+ with an association constant of 4.7 × 103 M-1. The limit of quantification and limit of detection of L for the analysis of Th4+ are found to be 167 and 50 nM, respectively. The visually detectable color change of L has been well integrated with a smartphone RGB color value to make it an analytical signal for real-time analysis of Th4+ with the detection limit down to 116 nM. Besides, L was applied for the analysis of Th4+ content present in various real water samples, monazite, and lantern mantle samples by spectrophotometry and RGB color values. The binding mode of L with Th4+ is investigated by 1H NMR, electrospray ionization-mass, and theoretical studies. Copyright © 2018 American Chemical Society.