High Impact Polylactide Based on Organosilicon Nucleation Agent  

作　　者：Daria Pakuła Bogna Sztorch Eliza Romańczuk-Ruszuk Bogdan Marciniec Robert E.Przekop 

机构地区：[1]Faculty of Chemistry,Adam Mickiewicz University in Poznań,Uniwersytetu Poznańskiego 8,61-614,Poznań,Poland [2]Centre for Advanced Technologies,Adam Mickiewicz University in Poznań,Uniwersytetu Poznańskiego 10,61-614,Poznań,Poland [3]Institute of Biomedical Engineering,Faculty of Mechanical Engineering,Bialystok University of Technology,Wiejska 45C,15-351,Bialystok,Poland

出　　处：《Chinese Journal of Polymer Science》2024年第6期787-797,共11页高分子科学（英文版）

基　　金：supported by the Smart Growth Operational Programme(No.POIR.04.02.00-00-D003/20-00);European Funds(No.RPWP.01.01.00-30-0004/18);Ministry of Science and Higher Education(No.21/529535/SPUB/SP/2022).

摘　　要：Various sectors of the industry are searching for new materials with specific requirements,providing improved properties.The study presents novel composite materials based on polylactide that have been modified with the organosilicon compound,(3-thiopropyl)polysilsesquioxane(SSQ-SH).The SSQ-SH compound is a mixture of cage structures and not fully condensed random structures.The composite materials were obtained through injection moulding.The study includes a comprehensive characterization of the new materials that analyze their functional properties,such as rheology(MFR),mechanical strength(tensile strength,Charpy impact strength),and thermal properties.SEM microscopic photos were also taken to analyze the microstructure of the samples.The addition of a 5%by-weight organosilicon compound to polylactide resulted in a significant increase in MFR by 73.8%compared to the neat polymer.The greatest improvement in impact strength was achieved for the 5%SSQ-SH/PLA composite,increasing it by 32.0 kJ/m^(2)compared to PLA,which represents an increase of up to 187%.The conducted research confirms the possibility of modifying the properties of the polymer by employing organosilicon compounds.

关 键 词：Octa(3-thiopropyl)silsesquioxane 8SH-POSS Polylactide(PLA) Injection moulding COMPOSITES 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]