The Effect of Ageing on Selected Properties of Polylactide Modified with Blowing Agents
Karolina Głogowska 1  
,  
Łukasz Majewski 1  
,  
Tomasz Garbacz 1  
,  
 
 
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Lublin University of Technology, Mechanical Engineering Faculty, Department of Technology and Polymer Processing, ul. Nadbystrzycka 36, 20-618 Lublin, Poland
CORRESPONDING AUTHOR
Łukasz Majewski   

Lublin University of Technology, Mechanical Engineering Faculty, Department of Technology and Polymer Processing, ul. Nadbystrzycka 36, 20-618 Lublin, Poland
Publish date: 2019-12-01
 
Adv. Sci. Technol. Res. J. 2019; 13(4):204–213
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ABSTRACT
The modification of processing and functional properties of polymeric materials is widely used in polymer processing. Current progress in this field involves the introduction of new ways of modifying polymers, often by changing their structure from homogeneous to porous structure. As a result, these polymers have lower density, and thus modified processing and functional properties. The paper presents the results of a study of selected properties of injection-molded specimens of polylactide (PLA) modified with blowing agents, before and after thermal age-ing. Blowing agents with exothermic (Hydrocerol 530) and endothermic decomposition (Hy-drocerol ITP-810, Expancel 951 MB 120 and LyCell F-017) were used. The mass content of the blowing agents was changed in the range from 0.5% to 3%. The study involved examina-tion of changes in properties such as Young’s modulus, tensile strength, tensile stress, strain at maximum tensile stress, Vicat softening temperature and impact strength depending on the mass content and type of blowing agent before and after the ageing process.