screws, measured in revolutions per minute, moving the material through the barrel of the extruder. If a melt pump is used the pressure is adjusted further by the speed, rpm, of the melt pump. The final pressure determination is accomplished by the internal cavity shape of the die. The ...
It is often used in the form of parts for fastening bone tissues (screws and pins) [60]. In regard with hybrid implants, it is worth noting that the chitosan/PLA nanofibers coated with hydroxyapatite were used to accelerate Polymers 2020, 12, 620 4 of 30 bone tissue regeneration [61]. ...
removing exterior moisture with a paper towel, weighing the samples and submerging the samples again. This procedure was performed multiple times over a period of ten days. The tests at 23 °C were conducted by placing a container filled with water in a temperature controlled room. The tests ...