The influence of additives on crystallization of blends based on polylactid acid

27th Joint Seminar Development of Materials Science in Research and Education

材料科学;教育

Perd'ochová, D.^1 ; Tomanová, K.^1 ; Alexy, P.^1 ; Bokaj, J.^1 ; Feranc, J.^1 ; Plavec, R.^1 ; Omaníková, L.^1 ; Jurkovi, P.^1 ; Prikyl, R.^2

Slovak University of Technology, Faculty of Chemical and Food Technology, Institute of Natural and Synthetic Polymers, Department of Plastics, Rubber and Fibers, Radlinského 9, Bratislava

812 37, Slovakia^1

Brno University of Technology, Institute of Material Chemistry, Faculty of Chemistry, Purkynova 118, Brno

612 00, Czech Republic^2

关键词: Biodegradable blends;    Heat treatment process;    Nucleating agents;    Physical and mechanical properties;    Polymer materials;    Processability;    Processing stability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/266/1/012014/pdf
DOI  :  10.1088/1757-899X/266/1/012014

来源: IOP

【 摘 要 】

The sustainable development consists of the effort of replacing commonly used polymer materials for the biodegradable ones. They do not have sufficient physical and mechanical properties, therefore they have to be modified by producing various ratio mixtures or with the additives. Improving their processability and properties is an important challenge to be afforded before using these materials on the market. One way to improve the properties of these materials is to prepare their blends [1]. The most common way of the preparation of packaging materials is the injection moulding, where the crystallization of material is very important. That is the reason the crystallization has become one of the most studied characteristics of biodegradable blends based on PLA / PHB. The work is a contribution to works that deal with the description of the structure of PLA / PHB blends, which have been modified by the addition of various types of additives, mainly nucleating agents and plasticizers [2]. The films of these blends keep approximately unchanged mechanical properties after two weeks of storage. The presence of plasticizer (ATBC) and nucleating agent (BN) has no significant impact on the processing stability of PLA/PHB blends. The results show that the combination of the plasticizer and nucleating agent greatly affects the process of crystallization of PLA/PHB blends as well as the ratio of polymers and the heat treatment process.