期刊
POLYMER TESTING
卷 77, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2019.105900
关键词
Poly (butylene succinate-co-adipate) (PBSA); Hydrolyzed collagen (HC); Blends; Blown film; Thermal properties; Mechanical properties
资金
- University of Pisa [PRA_2018_75]
In this study, blends of poly (butylene succinate-co-adipate) (PBSA) and raw hydrolyzed collagen (HC), a byproduct of the tannery industry, were investigated in terms of processing by blown film extrusion/injection molding and thermal/rheological/mechanical properties. PBSA/HC blends were prepared by melting extrusion with HC contents in the range 5-20 wt%. The blown films, produced up to 10 wt% of HC, resulted flexible with satisfactory tensile properties and excellent tear resistance. While, the blends with higher HC contents, up 20 wt %, resulted suitable for the injection molding obtaining molded specimens with good tensile properties (with addition of 5 wt% of HC a maximum value of elongation at break of 1200%). Scanning electron microscopy (SEM) revealed that the HC was uniformly dispersed into the continuous phase PBSA up to 10 wt%, while at higher contents phase separation occurred without compromising their processing by injection molding. The results obtained encourage the use of HC in PBSA-based blends to produce compostable/biodegradable films or molded products for applications in agriculture due also to the fertilizing properties of HC.
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