THERMOMECHANICAL AND SORPTIVE PROPERTIES OF METALLOCENE POLYPROPYLENE FIBRES MODIFIED POLYVINYL ALCOHOL AND CLOISITE

摘要

This work focuses on the study of the influences of polyvinal alcohol (PVA) and nanoaditive Cloisite 15 A (C15A) in the system PVA/C15A to modified PP/PVA and PP/PVA/C15A fibres. These were determined thermomechanical and sorptive properties of prepared fibres. Thermomechanical analysis (TMA) was using to evaluate of the dimensional properties of PP and modified PP/PVA and PP/PVAPC15A fibres. The evaluation was depending on the temperature and the temperature which leads to shrink of fibres was determined. On the basis of results from thermomechanical analysis was found that the temperature of PP/PVA/C15a fibres increases causing fibre deformation. Dimensional stability was increased and it signifies by fibre reinforcing. Determination of moisture sorption is important for assessing the effectiveness of modification fibres leading to increase hydrophilic (hydrophill) properties, as well as the wearing comfort of textile materials. Chemical fibres take from the environment variable amounts of water vapor. Received amount depends on the chemical (attended by polar - hydrophilic groups) supermolecular and morphological structure of fibres as well as environmental conditions (temperature, water vapor pressure). From obtained results it was detected that the addition of C15A improves sorptive and thermomechanical properties which leads to improving of dyebillity.