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Study of poly(lactic acid) foams preparation
Svatík, Juraj ; Petrůj, Jaroslav (referee) ; Figalla, Silvestr (advisor)
The bachelor thesis focuses on the processing of expanded poly(lactic acid) (PLA) or polylactide and on studying of some of its properties. The theoretical part deals with several ways of processing of PLA, its properties and methods of degradation. Furthermore, this part focuses on various processing methods of expanded PLA and the phenomena affecting the expansion, such as dissolving of gases in PLA. At the end of this part, it focuses on strength properties of PLA foams. The experimental part deals with specific way of processing of expanded PLA; that is dissolving of the physical blowing agent in PLA and subsequent foaming. Specific conditions within the processing of PLA foams are investigated there, such as pressure of gas needed, size of PLA particles. Further, this part focuses on distinct types of PLA foams differing in density or processing temperature. Last, it focuses on strength characteristics of PLA foams depending on their density and processing temperature.
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Study of poly(lactic acid) foams preparation
Svatík, Juraj ; Petrůj, Jaroslav (referee) ; Figalla, Silvestr (advisor)
The bachelor thesis focuses on the processing of expanded poly(lactic acid) (PLA) or polylactide and on studying of some of its properties. The theoretical part deals with several ways of processing of PLA, its properties and methods of degradation. Furthermore, this part focuses on various processing methods of expanded PLA and the phenomena affecting the expansion, such as dissolving of gases in PLA. At the end of this part, it focuses on strength properties of PLA foams. The experimental part deals with specific way of processing of expanded PLA; that is dissolving of the physical blowing agent in PLA and subsequent foaming. Specific conditions within the processing of PLA foams are investigated there, such as pressure of gas needed, size of PLA particles. Further, this part focuses on distinct types of PLA foams differing in density or processing temperature. Last, it focuses on strength characteristics of PLA foams depending on their density and processing temperature.
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