Preparation and Characterization of Oxo-degradable Polypropylene Composites Containing a Modified Pro-oxidant
- PDF / 2,254,545 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 92 Downloads / 170 Views
ORIGINAL PAPER
Preparation and Characterization of Oxo‑degradable Polypropylene Composites Containing a Modified Pro‑oxidant Sunil Sable1 · Sanjeev Ahuja1 · Haripada Bhunia1 Accepted: 29 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this study, the changes in the properties of polypropylene (PP) after loading of modified pro-oxidant were studied. Different proportions of modified-cobalt stearate (CoSt) pro-oxidant were filled in PP, and composites were prepared in a twinscrew extruder through compounding technique. Five films of these composites were prepared using hot press moulding. The modified pro-oxidant loaded PP films were characterized for chemical, physical, thermal, and morphological properties (before and after the biodegradation test). The biodegradability of the modified pro-oxidant loaded PP films was measured according to ASTM D 5338, and the biodegradation intermediate products were evaluated for their eco-toxicological effect. The changes (with respect to PP) in FTIR spectra of modified pro-oxidant loaded PP were noticed before and after accelerated ageing. The tensile properties and thermal stability of modified pro-oxidant loaded PP films decreased as confirmed by universal testing machine (UTM) and thermogravimetric analysis (TGA). Using differential scanning calorimetry (DSC) and XRD analysis, it was found that the percentage crystallinity of modified pro-oxidant loaded PP films has decreased and this led to increased degradability of PP. After the biodegradability test, SEM results of modified pro-oxidant loaded PP films revealed rougher morphology than before the biodegradability test. The highest biodegradability (28.87%) was obtained in PP100T30 film containing 30 phr of modified pro-oxidant. All the eco-toxicity tests of the degraded product materials demonstrated that the degraded products were nontoxic. Hence, the prepared composites can be effectively used as biodegradable flexible packaging materials. Graphic Abstract
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10924-020-01910-9) contains supplementary material, which is available to authorized users. Extended author information available on the last page of the article
13
Vol.:(0123456789)
Journal of Polymers and the Environment
Keywords Biodegradability · Composites · Eco-toxicity · Packaging material · Polypropylene
Introduction Plastics have become an essential aspect of our daily lives. Globally, the production of plastic crosses 150 MT per year [1]. Polyolefin like polypropylene (PP) is one of the most inexpensive synthetic polymeric material and broadly utilized for packaging applications [2]. It is widely used in packaging films due to its properties, like flexibility, lightweight, chemical resistance, low cost, hydrophobic nature, mechanical integrity, transparency, ease of processing, and durability [2–4]. The overall utilization of packaging applications is anticipated to rise from 27.4 million tons in 2017 to
Data Loading...
