Morphology, rheology and biodegradation of oxo-degradable polypropylene/polylactide blends
-
Dev K. Mandal
,
Pramod K. Bajpai
Abstract
The blends of polypropylene (PP)/polylactide (PLA) with or without compatibilizer, and with pro-oxidant (cobalt stearate/calcium stearate) and pro-oxidant filled PP were prepared by using the melt blending technique. Films of these blends were prepared by compression molding. PP85PL15 and PP85PL15MA4 were the optimum blends from the tensile strength point of view. The improvement in the tensile strength of PP85PL15MA4 blend was achieved by addition of 4 phr compatibilizer. Cobalt stearate and calcium stearate were added separately to PP85PL15MA4 blend in 0.2% (w/w) ratio. The optimized blends were further characterized by differential scanning calorimetry, X-ray diffraction, rheological studies, scanning electron microscopy (SEM) and biodegradability test. Rheological studies confirmed the pseudo-plastic nature of all the blend samples. SEM studies have revealed that the addition of PLA in PP85PL15 enhances the void and roughness on the blend. All the prepared blends have biodegraded in the composting environment and the blend containing pro-oxidant biodegraded to the maximum extent.
Acknowledgements
The authors gratefully acknowledge the financial support from the Department of Atomic Energy-Board of Research in Nuclear Sciences (DAE-BRNS), Bhabha Atomic Research Centre, Govt. of India through sanction no. 35/14/08/2014-BRNS. Special thanks go to Dr. Debaprasad Mandal, Assistant Professor, Department of Chemistry, IIT Ropar, Punjab, for helping with the DSC experiments.
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
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Articles in the same Issue
- Frontmatter
- Material properties
- Influence of particle size of isotactic polypropylene (iPP) on barrier property against agglomeration of homogenized microcrystalline cellulose (HMCC) in iPP/HMCC composites
- An investigation of the impact of an amino-ended hyperbranched polymer as a new type of modifier on the compatibility of PLA/PBAT blends
- Study on the adhesive properties of reactive liquid rubber toughened epoxy-clay hybrid nanocomposites
- Morphology, rheology and biodegradation of oxo-degradable polypropylene/polylactide blends
- Long term hydrothermal effect on the mechanical and thermo-mechanical properties of carbon nanofiber doped epoxy composites
- Long term accelerated aging investigation of an epoxy/silica nanocomposite for high voltage insulation
- Mechanical and morphological properties of modified halloysite nanotube filled ethylene-vinyl acetate copolymer nanocomposites
- Evaluation of polypropylene hybrid composites containing glass fiber and basalt powder
- Preparation and assembly
- Ibuprofen loaded nano-ethanolic liposomes carbopol gel system: in vitro characterization and anti-inflammatory efficacy assessment in Wistar rats
- Preparation of oriented bacterial cellulose nanofibers by flowing medium-assisted biosynthesis and influence of flowing velocity
- Engineering and processing
- Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses
- Replication of micro-structured injection molds using physical vapor deposition coating and dynamic laser mold tempering
