Effect of Starch Type and Pre-Treatment on the Properties of Gelatin-Starch Foams Produced by Mechanical Foaming

Torrejon, Virginia Martin1,2,3; Song, Hang2; Wu, Bingjie2; Luo, Guidong2; Song, Jim2

2023-04-01

10.3390/polym15071775

POLYMERS   影响因子和分区

2073-4360

Incorporating biopolymers in packaging foams can contribute to a more circular packaging system, utilizing renewable and compostable materials. Gelatin, with its favorable physicochemical properties, allows for producing gelatin foams via mechanical foaming, a well-established and low-investment process. To improve foam properties, starch can be added to the gelatin formulation. However, the variability in the properties of starch powders can impact the polymer blend and, consequently, the properties of the dry foam. This study aimed to investigate the impact of different starch powders from different botanical origins (tapioca and corn) and treatments (native or pregelatinized) on the properties of gelatin-starch foams produced by mechanical foaming. The study successfully produced foams with densities of approximately 45-50 kg/m(3) and compression properties comparable to EPS (expanded polystyrene) foams. The starch type and pre-treatment significantly influenced the properties of the foam. Pregelatinized starches exhibited slightly higher densities due to lower foamability caused by higher viscosity. Using starch exhibiting total loss of birefringence led to denser foams with greater compression properties than those with starch with a certain degree of crystallinity remaining. Therefore, selecting the appropriate starch type is crucial when developing starch-based materials to ensure optimal material and processing properties align with application requirements.

starch-based bioplastics gelatin-based cellular solids bio-based packaging foams mechanical foaming of biopolymers renewable packaging cushioning

SCI ; EI

英语

通讯

Southern University of Science and Technology[Y01426002]

Polymer Science

Polymer Science

WOS:000968857600001

MDPI

20231713944321

Biomolecules ; Biopolymers ; Crystallinity ; Packaging ; Packaging materials ; Physicochemical properties ; Powders

Biological Materials and Tissue Engineering:461.2 ; Biology:461.9 ; Packaging, General:694.1 ; Packaging Materials:694.2 ; Biochemistry:801.2 ; Physical Chemistry:801.4 ; Organic Compounds:804.1 ; Polymeric Materials:815.1 ; Organic Polymers:815.1.1 ; Crystalline Solids:933.1

Web of Science

1.Shenzhen Polytech, Media & Commun Sch, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Sch Innovat & Entrepreneurship, 1088 Xueyuan Ave, Shenzhen 518055, Peoples R China
3.City Univ London, Ctr Food Policy, Myddelton St Bldg, London EC1R 1UW, England

Torrejon, Virginia Martin,Song, Hang,Wu, Bingjie,et al. Effect of Starch Type and Pre-Treatment on the Properties of Gelatin-Starch Foams Produced by Mechanical Foaming[J]. POLYMERS,2023,15(7).

Torrejon, Virginia Martin,Song, Hang,Wu, Bingjie,Luo, Guidong,&Song, Jim.(2023).Effect of Starch Type and Pre-Treatment on the Properties of Gelatin-Starch Foams Produced by Mechanical Foaming.POLYMERS,15(7).

Torrejon, Virginia Martin,et al."Effect of Starch Type and Pre-Treatment on the Properties of Gelatin-Starch Foams Produced by Mechanical Foaming".POLYMERS 15.7(2023).