Izvorni znanstveni članak
https://doi.org/10.15255/KUI.2018.010
Thermal and Mechanical Properties of Thermoplastic Starch Blends
Vesna Ocelić Bulatović
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Marulićev trg 19, 10 000 Zagreb, Hrvatska
Ivana Borković
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Marulićev trg 19, 10 000 Zagreb, Hrvatska
Dajana Kučić Grgić
orcid.org/0000-0001-8427-6482
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Marulićev trg 19, 10 000 Zagreb, Hrvatska
Antun Jozinović
orcid.org/0000-0001-9627-1013
; Sveučilište Josipa Jurja Strossmayera u Osijeku, Prehrambeno-tehnološki fakultet, Franje Kuhača 20, 31 000 Osijek, Hrvatska
Sažetak
Blends of low-density polyethylene (PE-LD) and thermoplastic starch (TPS) were prepared in order to obtain a biodegradable polymeric material as a packaging material. The characterization of thermal and mechanical properties, as well as water vapour permeability was performed due to the highly hydrophilic character of the starch. The addition of TPS to PE-LD/TPS blends influenced the degree of crystalline to 20 wt. % due to nucleation effect of TPS. The tensile strength and elongation at break decreased by increasing the starch level in the PE-LD/TPS blends, but the elastic modulus increased. The initial decomposition temperature shifted to a lower temperature, indicating a reduction in the thermal stability of PE-LD by addition of TPS. Glycerol as a starch plasticizer contributed to increasing the thermal stability of starch, but had a negative effect on water vapour permeability.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Ključne riječi
biodegradable materials; low-density polyethylene; thermoplastic starch; thermal properties; mechanical properties; water vapour permeability
Hrčak ID:
207026
URI
Datum izdavanja:
14.12.2018.
Posjeta: 1.467 *