Improved dispersion of grafted starch granules leads to lower water resistance for starch-g-PLA/PLA composites
Source abstract
Abstract
Polylactide (PLA) was grafted on the surface of starch (St) granules to improve the interfacial adhesion between starch granules and PLA matrix in starch/PLA blends. The grafting significantly improved strain at failure values of St-g-PLA/PLA 25:75 blends as compared to starch/PLA 25:75 blends. However, unexpectedly the water resistance of the films significantly deteriorated after the surface grafting. SEM and FTIR analysis showed that St-g-PLA was evenly distributed at the film surface and in the bulk, while unmodified starch was encapsulated inside the PLA matrix. This resulted in rapid leaching of St-g-PLA from the films during aging in water, while the unmodified starch granules were protected by PLA matrix.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: biodegradable polymer synthesis and properties · Microplastics and Plastic Pollution · Electrospun Nanofibers in Biomedical Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. European bioplastics: fivefold growth of the bioplastics market by 2016; 2012.
2. Properties of starch blends with biodegradable polymers10.1081/MC-120023911 ↗
3. Oxygen permeability of amylomaize starch films
4. Some properties of hydroxypropylated amylomaize starch films
5. Biodegradable polymers from agricultural products
6. Changes in the mechanical properties of thermoplastic potato starch in relation with changes in B-type crystallinity10.1016/0144-8617(96)00011-2 ↗
7. Vliegenthart · 1996
8. Starch-g-polycaprolactone copolymerization using diisocyanate intermediates and thermal characteristics of the copolymers10.1002/1097-4628(20001031)78:5<986::AID-APP70>3.0.CO;2-T ↗
9. Starch-based biodegradable blends: morphology and interface properties10.1002/pi.1636 ↗
10. Crank M, Patel MK, Marscheider-Weidemann F, Schleich J, Hüsing B, Angerer G. Techno-economic feasibility of large-scale production of bio-based polymers in, Europe; 2005.
11. Starch, poly(lactic acid), and poly(vinyl alcohol) blends10.1023/A:1023875227450 ↗
12. Polymer blends and composites from renewable resources10.1016/j.progpolymsci.2006.03.002 ↗
13. The basic properties of poly(lactic acid) produced by the direct condensation polymerization of lactic acid10.1007/BF02068677 ↗
14. Filling of poly(lactic acid) with native starch10.1002/pen.10680 ↗
15. Biodegradable polymer blends of poly(L-lactic acid) and gelatinized starch10.1002/pen.11384 ↗
16. Poly(lactic acid): plasticization and properties of biodegradable multiphase systems10.1016/S0032-3861(01)00086-6 ↗
17. Nanocomposites of poly(lactic acid) reinforced with cellulose nanofibrils10.15376/biores.5.3.1811-1823 ↗
18. Moisture uptake and hygroexpansion of wood fiber composite materials with polylactide and polypropylene matrix materials10.1002/pc.20753 ↗
19. Toward the controlled production of oligoesters by microwave-assisted degradation of poly(3-hydroxyalkanoate)s10.1016/j.polymdegradstab.2011.12.009 ↗
20. The starch grafted poly(l-lactide) and the physical properties of its blending composites10.1016/j.polymer.2005.05.053 ↗
21. Poly(l-lactide)/starch blends compatibilized with poly(l-lactide)-g-starch copolymer10.1016/j.carbpol.2005.12.029 ↗
22. Aliphatic polyester-grafted starch composites by in situ ring opening polymerization10.1163/156855400300185324 ↗
23. Biodegradable compositions by reactive processing of aliphatic polyester/polysaccharide blends10.1002/masy.200350820 ↗
24. Morphology and properties of compatibilized polylactide/thermoplastic starch blends10.1016/j.polymer.2006.11.023 ↗
25. Preparation of modified starch-grafted poly(lactic acid) and a study on compatibilizing efficacy of the copolymers in poly(lactic acid)/thermoplastic starch blends10.1002/app.36896 ↗
26. Hakkarainen · 2002 · 157 · 113
27. Identification by headspace gas chromatography-mass spectrometry of in vitro degradation products of homo- and copolymers of l- and d, l-lactide and 1,5-dioxepan-2-one10.1016/0021-9673(94)00859-0 ↗
28. Weight losses and molecular weight changes correlated with the evolution of hydroxyacids in simulated in vivo degradation of homo- and copolymers of PLA and PGA10.1016/0141-3910(96)00009-2 ↗
29. Surface modification changes the degradation process and degradation product pattern of polylactide10.1021/la902166j ↗
30. Migration and hydrolysis of hydrophobic polylactide plasticizer10.1021/bm901157h ↗
31. Nanoclay effects on the degradation process and product patterns of polylactide10.1016/j.polymdegradstab.2012.05.032 ↗
32. Pyrolysis-GC-MS reveals important differences in hydrolytic degradation process of wood flour and rice bran filled polylactide composites10.1016/j.polymdegradstab.2011.12.017 ↗
33. Water absorption and enzymatic degradation of poly(lactic acid)/rice starch composites10.1016/j.polymdegradstab.2005.04.006 ↗
34. Thermal degradation and biodegradability of poly (lactic acid)/corn starch biocomposites10.1002/app.23425 ↗
35. Investigation of the structure of solution grown crystals of lactide copolymers by means of chemical reactions10.1007/BF01498927 ↗