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Talaniuk, Viktoriia, 2024, "Research data for the publication 'Results to development of polyhydroxybutyrate-based packaging films and methods to their ultrasonic welding'", https://doi.org/10.18150/HVW3IX, RepOD, V1
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This study developed a technical task associated with the formation of welded joints based on biodegradable polymers and their subsequent physicochemical characterization. The primary objective was to establish the effect of the welding process and modification of natural poly(3-hydroxybutyrate) (PHB) with N,N-dibutylundecenoylamide (DBUA) as a plasticizing agent on the structure and properties of PHB-based biopolymer materials as well as the process and structure of welded joints formation using ultrasonic welding technique. The weldability of biodegradable layers based on PHB and PHB/DBUA mixture was ultrasonically welded and optimized using a standard Branson press-type installation. The effect of the DBUA plasticizer and welding process on the structure of PHB-based biodegradable material was investigated using scanning electron microscopy, X-ray diffraction, FT-IR spectroscopy, differential scanning calorimetry, and thermomechanical analysis. The results confirmed that the DBUA acted as an effective plasticizer of PHB, contributing to lower crystallinity of the PHB/DBUA mixture (63%) in relation to the crystallinity degree of pure PHB film (69%). Ultrasonic welding resulted in an additional increase (approximately 8.5%) in the degree of crystallinity in the PHB/DBUA in relation to the initial PHB/DBUA mixture. The significant shift toward lower temperatures of the crystallization and melting peaks of PHB modified with DBUA were observed using DSC concerning pure PHB. The melt crystallization process of PHB was affected by welding treatment, and a shift toward higher temperature was observed compared with the unwelded PHB/DBUA sample. The butt-welded joints of biodegradable PHB/DBUA materials made using the ultrasonic method tested for tensile strength have damaged the area immediately outside the joining surface.
W pracy opracowano ważne zadanie naukowo-techniczne związane z tworzeniem spawanych połączeń opartych na biodegradowalnych polimerach oraz ich następną charakteryzację fizykochemiczną. Najważniejszym celem tych badań było ustalenie wpływu procesu spawania i modyfikacji naturalnego poli(3-hydroksymaślanu) (PHB) z N,N-dibutylundecenoylamidem (DBUA) na strukturę i właściwości materiałów biopolimerowych opartych na PHB, a także na proces i strukturę tworzenia się spawanych połączeń przy użyciu techniki spawania ultradźwiękowego. Spawalność warstw biodegradowalnych opartych na PHB i mieszaninie PHB/DBUA została połączone za pomocą standardowej instalacji typu prasa Branson. Spawane za pomocą ultradźwięków materiały biodegradowalne PHB/DBUA, podczas badań wytrzymałości na rozciąganie, uległy uszkodzeniu w obszarze materiału rodzimego, tzn. poza złączem spawanym. Wpływ plastyfikatora DBUA i procesu spawania na strukturę materiału biodegradowalnego opartego na PHB został zbadany za pomocą skaningowej mikroskopii elektronowej, dyfrakcji rentgenowskiej, spektroskopii podczerwieni, różnicowej kalorymetrii skaningowej oraz analizy termomechanicznej.
biopolymers, poly(3-hydroxybutyrate), N,N-dibutylundecenoylamide plasticizer, ultrasonic welded joints, biopolimery, poli(3-hydroksymaślan) jako plastyfikator, N,N-dibutylondecenoiloamid, złącza zgrzewane ultradźwiękowo
Talaniuk, V.; Godzierz, M.; Vashchuk, A.; Iurhenko, M.; Chaber, P.; Sikorska, W.; Kobyliukh, A.; Demchenko, V.; Rogalsky, S.; Szeluga, U.; et al. Development of Polyhydroxybutyrate-Based Packaging Films and Methods to Their Ultrasonic Welding. Materials 2023, 16, 6617. https://doi.org/10.3390/ma16206617 doi: 10.3390/ma16206617
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