Study of the Properties of Compositions Based on Polylactic Acid and Thermoplastic Starch

Abstract

The use of thermoplastic starch in compositions based on polylactic acid is of interest from the point of view of controlling the physicomechanical properties of materials and the time of biodegradation. The effect of thermoplastic starch containing sorbitol and / or glycerin as plasticizers on the resistance of compositions based on polylactic acid to thermal and thermomechanical action was studied. The physicomechanical properties of the compositions and their resistance to biodegradation under composting conditions have also been determined.

Interaction between thermoplastic starch and cellulose in poly (butylene adipate-co-terephthalate) composites with cellulosic fillers

“…Amylopectin is a highly branched and semicrystalline homopolymer composed of much shorter chains of α-1, 4 -linked D-glucan, highly branched through additional α-1, 6 -D-glucose linkages. 15,19 Starch granules can undergo a specific thermomechanical process (for example extrusion) in an excess of water with the aid of plasticizers to obtain thermoplastic starch (TPS) 20 which can replace polymers or can be used as loose fillers in many applications such as food packaging, 21 compostable foams, 22 disposable diapers 23 or even coatings. 24 In this context, addition of cellulose to polyester matrices is a subject of importance, 46 but the production of a composite material with good mechanical and physico-chemical properties strongly depends on the interphase.…”

Plasma modification physical and mechanical properties of nonwoven materials of medical masks

“…In the context of the coronavirus pandemic and the impossibility of quickly producing a large number of medical masks, the task of developing sterilization technologies for medical masks and respirators is relevant. One of the methods for sterilization and disinfection of medical devices made of nonwoven materials is plasma treatment, which, unlike most other methods, allows you to maintain the filtering efficiency of masks, which has recently been reported in more and more publications in the scientific and technical literature [3][4][5][6], works on the use of plasma treatment to improve the characteristics of nonwoven materials for medical devices [7,8]. In general, it should be noted that plasma treatment is effectively used to modify a wide range of textile materials [9][10][11].…”