Properties of thermoplastic blends: starch-polycaprolactone
By L. Avérous, L. Moro, P. Dole, C. Fringant. 2000
431 citations recorded by the source corpus.
Different compositions of wheat thermoplastic starch (TPS) and polycaprolactone (PCL) are melt blended by extrusion and injected. Different properties are determined: mechanical properties (tensile and impact tests), thermal and thermomechanical properties (DSC and DMTA) and hydrophobicity (contact angle measurement). A large range of blends is analysed with different glycerol (plasticizer):starch contents ratios (0.14:0.54) and various PCL concentrations (up to 40 wt.%). From the behaviour of each polymeric system, it is possible to analyse the relationship properties of each component proportion on the blends. The ageing of the system is studied and shows a structural evolution of the material after injection during several weeks. We have noticed a fairly low compatibility between both polymeric systems. Finally, the addition of PCL to TPS matrix allows to overcome the weakness of pure TPS: low resilience, high moisture sensitivity and high shrinkage, even at low PCL concentration, e.g. 10 wt.%.
Subfields: Biomaterials, Nutrition and Dietetics
View Paper: https://www.semanticscholar.org/paper/a651dec7d983699a3f85e06d3bb46f77abb89b10
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In Biomaterials
In Nutrition and Dietetics
Citations in the corpus
- Biodegradable Multiphase Systems Based on Plasticized Starch: A Review (2004, neutral): “Therefore, PCL is generally blended 27 30 39 40 or modified (eg, copolymerization, crosslink 41 ).”
- Reinforcement of plasticized wheat gluten with natural fibers : From mechanical improvement to deplasticizing effect (2008, background): “As the plasticizer content increases, the material tensile strength and Young’s modulus decreases, while the elongation at break increases [10–12].”
- Thermoplastic Starch (TPS)/Polylactic Acid (PLA) Blending Methodologies: A Review (2021, background): “The increase in solid waste from nonbiodegradable polymers and the depletion of petroleum resources have led to environmental awareness and the interest of plastic industries, universities and researchers in the search for raw materials from alternative sources, which has driven the study and develo”