NOPR Collection:

Bursting behavior of polyester needle-punched filter fabrics

2020-09-24T07:21:02Z

Title: Bursting behavior of polyester needle-punched filter fabrics Authors: Chauhan, Vinay Kumar; Singh, Jitendra Pratap; Debnath, Sanjoy Abstract: The effect of fabric weight, depth of needle penetration and needling density on bursting strength of needle-punched nonwoven filter fabrics prepared from virgin and recycled polyester fibres has been studied. The effect of fabric parameters on bursting behavior trend is found similar in both the virgin and the recycled polyester filter fabric samples. There is considerable fall in bursting strength of recycled polyester fabrics as compared to that in virgin one, under high fabric weight and needling density. Interestingly, it has been found that the recycled polyester filter fabric shows 3.584% lesser strength (average value of all samples) than the virgin polyester filter fabric, which signifies the use of recycled polyester filter wherever applicable, considering the recyclability and sustainability aspects. Page(s): 253-259

Preparation of a naturally driven cotton wound dressing via honey, Tragacanth and Sumac

2020-09-24T07:19:24Z

Title: Preparation of a naturally driven cotton wound dressing via honey, Tragacanth and Sumac Authors: Montazer, Majid; Navaei, Tina; Rad, Mahnaz Mahmoudi Abstract: An antibacterial wound dressing with wound healing effects of honey (H), Tragacanth Gum (TG) and Sumac (S) (Rhus coriaria L.) has been prepared. The antibacterial properties of five different concentrations of water extracted Sumac has been examined to find out the best sample. Ratios of honey and Tragacanth Gum are investigated along with the chosen concentration of Sumac in order to find out the optimum compound with desirable antibacterial and healing effects. The results of the well diffusion test indicate antibacterial activities against S. aureus and E. coli on all samples. Scratch test results demonstrate improvement in the proliferation of fibroblasts on the fabric treated with compounds. The prepared wound dressing accelerates the healing process and eliminates bacterial growth causing wound infection. Page(s): 260-266

Analysis of thrust force in drilling cotton with bamboo blended fibre-reinforced composites using Box-Behnken methodology

2020-10-05T07:36:32Z

Title: Analysis of thrust force in drilling cotton with bamboo blended fibre-reinforced composites using Box-Behnken methodology Authors: Karthik, A; Sampath, P S Abstract: In this study, cotton/bamboo woven fabric reinforced composite has been subjected to drilling operation and thrust force is analysed for different combination of feed rate, cutting speed and drill geomentry. Box-Behnken experimental design is used to optimize the cutting parameters along with the input parameters, such as drill- bit geomentry, spindle speed and rate of feed. Further, a drill with standard twist is used for drilling operation. The results show that with the increase in thrust force, feed rate increases and cutting speed experiences decrease when drill diameter is increased. The SEM analysis is also done to reveal about various damages, like fibre pullout, peel off, uncut fibres and voids. Page(s): 267-273

Effect of process parameters on properties of polypropylene and kenaf fibres needle-punched nonwoven geotextiles

2020-09-24T07:15:44Z

Title: Effect of process parameters on properties of polypropylene and kenaf fibres needle-punched nonwoven geotextiles Authors: Tshifularo, Cyrus; Anandjiwala, Rajesh; Patnaik, Asis Abstract: Effects of stroke frequency, depth of needle penetration and mass per unit area on properties of needle-punched nonwoven fabrics produced from polypropylene (PP), 50/50 PP/kenaf and kenaf fibres have been studied. Properties of fabrics, such as tensile strength, puncture resistance, pore size, water permeability and transmissivity are analysed. Results obtained show that the higher tensile strength and puncture resistance are achieved in fabrics produced from kenaf fibres at higher stroke frequency, depth of needle penetration and mass per unit area. Fabrics produced from kenaf fibres can be employed in geotextile applications, since they also possess bigger pore size and higher water permeability. Page(s): 274-285