What question did this study set out to answer?

To synthesize and evaluate biodegradable composite packaging films made from carrageenan, chitosan, and modified starch.

August 19, 2026Discover SustainabilityOpen Access

Biodegradable composite films from carrageenan, chitosan, and modified starch with enhanced mechanical strength and barrier properties for sustainable packaging

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Authors

IJImasha S. Jayathissa GRG. D. S. P. Rajapaksha JVJanak K. Vidanarachchi

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Overview

Experimental study demonstrates ternary polysaccharide films improve mechanical strength and moisture barrier performance, indicating potential for sustainable food packaging.

Key Points

To synthesize and evaluate biodegradable composite packaging films made from carrageenan, chitosan, and modified starch.
Fabricated composite bioplastic films via solution casting using Kappaphycus alvarezii-derived carrageenan (0.5% w/v), glycerol plasticizer (40% w/w total solids), and varying chitosan to modified starch (CS:MS) ratios at 1% w/v total solids.
Characterized film optical opacity, mechanical properties, water vapor barrier capability, thermal stability, and mass loss during compost biodegradation.
The CS80 formulation exhibited the highest tensile strength (12.71 ± 0.08 MPa), whereas MS100 demonstrated the greatest elongation at break (22.6 ± 1.9%) and the highest opacity (5 ± 0.6 mm⁻¹).
Water vapor permeability reached minimum values in CS60 (1.3 ± 0.10 × 10⁻¹⁰ g m⁻¹ s⁻¹ Pa⁻¹) and CS40 (1.4 ± 0.12 × 10⁻¹⁰ g m⁻¹ s⁻¹ Pa⁻¹), alongside thermal stability spanning 303 to 325 °C.
Under compost conditions, CS20 and MS100 films achieved 100% mass loss within 7 days, compared to 42 ± 4% mass loss for CS100.

Cite This Study

Jayathissa et al. (2026) studied this question.

synapsesocial.com/papers/6a85633c03308d306e2d6368 https://doi.org/10.1007/s43621-026-04312-4

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August 19, 2026Discover SustainabilityOpen Access

Biodegradable composite films from carrageenan, chitosan, and modified starch with enhanced mechanical strength and barrier properties for sustainable packaging

View Full Paper

Ask AI

Bookmark

Authors

IJImasha S. Jayathissa GRG. D. S. P. Rajapaksha JVJanak K. Vidanarachchi

Discussion

Member takes

Overview

Experimental study demonstrates ternary polysaccharide films improve mechanical strength and moisture barrier performance, indicating potential for sustainable food packaging.

Key Points

To synthesize and evaluate biodegradable composite packaging films made from carrageenan, chitosan, and modified starch.
Fabricated composite bioplastic films via solution casting using Kappaphycus alvarezii-derived carrageenan (0.5% w/v), glycerol plasticizer (40% w/w total solids), and varying chitosan to modified starch (CS:MS) ratios at 1% w/v total solids.
Characterized film optical opacity, mechanical properties, water vapor barrier capability, thermal stability, and mass loss during compost biodegradation.
The CS80 formulation exhibited the highest tensile strength (12.71 ± 0.08 MPa), whereas MS100 demonstrated the greatest elongation at break (22.6 ± 1.9%) and the highest opacity (5 ± 0.6 mm⁻¹).
Water vapor permeability reached minimum values in CS60 (1.3 ± 0.10 × 10⁻¹⁰ g m⁻¹ s⁻¹ Pa⁻¹) and CS40 (1.4 ± 0.12 × 10⁻¹⁰ g m⁻¹ s⁻¹ Pa⁻¹), alongside thermal stability spanning 303 to 325 °C.
Under compost conditions, CS20 and MS100 films achieved 100% mass loss within 7 days, compared to 42 ± 4% mass loss for CS100.

Cite This Study

Jayathissa et al. (2026) studied this question.

synapsesocial.com/papers/6a85633c03308d306e2d6368 https://doi.org/10.1007/s43621-026-04312-4

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