The Effects Of Chemical Modification And Layering On Properties Of Woven And Nonwoven Kenaf Fiber Reinforced Epoxy Composites

The great potential of kenaf fiber combined with the new structure of woven and nonwoven fiber mat were reinforced in the epoxy resin by hand lay-up process. The design of stacking combination with different layering pattern of woven and nonwoven as a tri-layer composites was studied. Potensi tinggi gentian kenaf digabungkan dengan struktur baru tikar gentian anyaman dan bukan anyaman diperkuatkan dengan resin epoksi melalui proses ‘hand lay-up’. Reka bentuk kombinasi susunan dengan corak lapisan yang berbeza daripada anyaman dan bukan anyaman sebagai komposit tiga lapisan telah dikaji

Automated Medical Surgical Trolley

Operating theatre is a place in a hospital where surgical operations are conducted on patients by surgeons. In the operating theatre, the surgical equipment is placed on stainless steel table or on surgical instrument tray. However, during the operation accidents can occur where the surgical tools placed near to the surgeon could be accidentally be hit by them during the surgical operation. This may cause the surgical tools to fall on the floor which may lead to injuries. Hence, this paper presents an automatic medical surgical trolley for surgeons to grab operating tools easily. The proposed system is implemented for automaticmedical surgical trolley movement using Arduino Uno R3. The invention provides an automatic medical surgical trolley which comprises automatic guidance, a wireless controller, an obstacle avoiding detection device, a touch screen controller via smart phone, an IP camera, a trolley, an integrated power supply and a processor. The trolley with stainless steel shelves is ideal for use in clinical environments and operation theatres. Medical equipment is loaded in the trolley, the wireless remote drives the trolley to move forwards and backwards. Automatic visual guidance is achieved via an IP camera attached to the trolley and a touch screen controller via a smart phone. A large amount of space and a large number of materials are saved, the workload of medical workers will be greatly relieved, and the working efficiency will be improved

Celulosic Nanofiber Kenaf Bast Using Supercritical Co2 Technique As Reinforcement In Nanocomposite For Premium Packaging Applications

This study investigates the characteristic functional properties of cellulose nanofibers (CNF) from kenaf fiber extracted via a total chlorine-free (TCF) bleaching method followed by an eco-friendly supercritical carbon dioxide (SC-CO2) treatment process

Extraction of cellulose nanofibers via eco-friendly supercritical carbon dioxide treatment followed by mild acid hydrolysis and the fabrication of cellulose nanopapers

The conventional isolation of cellulose nanofibers (CNFs) process involves high energy input which leads to compromising the pulp fiber’s physical and chemical properties, in addition to the issue of elemental chlorine-based bleaching, which is associated with serious environmental issues. This study investigates the characteristic functional properties of CNFs extracted via total chlorine-free (TCF) bleached kenaf fiber followed by an eco-friendly supercritical carbon dioxide (SC-CO2) treatment process. The Fourier transmission infra-red FTIR spectra result gave remarkable effective delignification of the kenaf fiber as the treatment progressed. TEM images showed that the extracted CNFs have a diameter in the range of 10–15 nm and length of up to several micrometers, and thereby proved that the supercritical carbon dioxide pretreatment followed by mild acid hydrolysis is an efficient technique to extract CNFs from the plant biomass. XRD analysis revealed that crystallinity of the fiber was enhanced after each treatment and the obtained crystallinity index of the raw fiber, alkali treated fiber, bleached fiber, and cellulose nanofiber were 33.2%, 54.6%, 88.4%, and 92.8% respectively. SEM images showed that amorphous portions like hemicellulose and lignin were removed completely after the alkali and bleaching treatment, respectively. Moreover, we fabricated a series of cellulose nanopapers using the extracted CNFs suspension via a simple vacuum filtration technique. The fabricated cellulose nanopaper exhibited a good tensile strength of 75.7 MPa at 2.45% strain