Functional films Active packaging 1 Additives 1 Ammonia 1 Ammonium polyphosphates 1 Antibiotics 1 Biodegradability 1 Biodegradable polymers 1 Cellulose films 1 Cellulose nanofibers 1 Chitosan 1 Combustion 1 Composite films 1 Consumption patterns 1 Elastomers 1 Environmental assessment 1 Environmental impact 1 Facile preparation 1 Feasibility assessment 1 Film preparation 1 Flame-retardancy 1 Food packaging 1 Functional film 1 Hydrogen Bonds 1 Hydrogen bonds 1 Lactic acid 1 Life cycle 1 Life cycle assessment 1 Mechanical 1 Mechanical strength 1