We developed a cervical collar (the Canadian collar) in response to the requirements of occupational therapists who manage arthritis patients. This orthosis overcomes the problems of heat and inadequate support common to many soft collars. The collar is constructed from nylon and polyvinyl chloride tubing, clipped together by nylon junctions, and from chin and breastplate supports of molded nyl...

Regular serial refraction was used to determine the rate of stabilisation of refraction following routine extracapsular cataract surgery in 85 eyes. Patients were divided into four groups depending on wound closure technique: limbal section closed by interrupted 8-0 virgin silk, 9-0 polydioxanone or 10-0 nylon sutures, and corneal section closed by continuous 10-0 nylon suture. Stabilisation of...

A procedure for immobilization of well-defined quantities of oligodeoxyribonucleotides (ODNs) to a versatile nylon support is described. The solid support, a nylon-6/6 bead, is covalently coated with poly(ethyleneimine) to provide a reactive spacer-arm for attachment of ODNs. 5'-Aminohexyl-tailed ODNs are selectively activated using 2,4,6-trichloro-1,3,5-triazine (cyanuric chloride) and then co...

polyaniline and polyamide (nylon 6,6) nanocomposites with silva were prepared by in-situ oxidativepolymerization of aniline monomers in the presence of ag salt nano particles of silver (nps) were symthesieedby controlled reduction of ag+ ions kith sodium borohydride at room temperature. nylon 6,6 wax loaded withag nanoparfieles by erdrapment of ag+ ions into the polymer network, followed by red...

In the present paper comparison of dimensional accuracy and form errors FFF (Fused Filament Fabrication) 3D printed spur gears obtained in two different polymeric materials (PLA Nylon-PA6) is presented. Two types were designed printed, having module teeth number. First, gear modelling process The printing parameters defined for both materials. Then, measuring processes described. Using method s...

atechnical feasibility study has been conducted on production of nano- and micro-fibrils from nylon 6/polypropylene grafted with maleic anhydride/polypropylene blended films. fibrils are prepared in four consecutive steps.in the first step the polymers melt blended in an extruder with and without compatibilizers to produce chips; in the second step films are extruded from polymer blends chips, ...

The aim of this study is to enhance the tensile and flexural strength polyamide (nylon 6, 6) by incorporation glass fibre. Nylon has high elasticity, strength, toughness maintain mechanical properties at elevated temperatures. method employed for enhancement reinforcement Glass fibre most extensively used material. It a lightweight, extremely solid, durable, low cost material that moderafly sti...