PVP polymer composite thin films

Urška Gradišar Centa (Author), Anja Pogačnik Krajnc (Author), Lidija Slemenik Perše (Author), Matic Šobak (Author), Mohor Mihelčič (Author)

Abstract

The properties of thin polymer films are influenced by the size of the fillers, their morphology, the surface properties and their distribution/interaction in the polymer matrix. In this work, thin polymer composite films with MoO$_3$ or SiO$_2$ nano and micro fillers in PVDF-HFP/PVP polymer matrix were successfully fabricated using the solvent casting method. The effects of different types, sizes and morphologies of the inorganic fillers on the crystallization of the PVDF-HFP polymer were investigated, as well as the effects on the thermal and mechanical properties of the composites. Scanning electron microscopy, ATR-FTIR spectroscopy, differential scanning calorimetry, nanoindentation and uniaxial mechanical tests were used for characterization. The results showed that MoO$_3$ nanowires thermally stabilized the polymer matrix, induced crystallization of the PVDF-HFP polymer in all three polymorphs (α-, β-, γ-phase) and formed a geometrical network in the polymer matrix, resulting in the highest elastic moduli, hardness and Young’s modulus.

Keywords

polymer composites;crystallization;PVP;PVDF-HFP;mechanical properties;thermal properties;

Data

Language:	English
Year of publishing:	2024
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	620.1:532
COBISS:	220430339
ISSN:	2079-6412
Views:	268
Downloads:	66
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Type (COBISS):	Article
Pages:	12 str.
Volume:	ǂVol. ǂ14
Issue:	ǂiss. ǂ12, [art. no.] 1603
Chronology:	2024
DOI:	10.3390/coatings14121603
ID:	25562812