Correlation Between Foam Performance and Molecular Structure of Fully Biodegradable PPC-P Enhanced by Chain Extension

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(1), С. 115292 - 115292

Опубликована: Янв. 5, 2025

Язык: Английский

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In-situ cross-linking strategy for achieving excellent impact resistance and thermal insulation of closed-cell poly(lactic acid) (PLA)/poly(4-hydroxybutyrate) (P4HB) foams

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 140669 - 140669

Опубликована: Фев. 1, 2025

Язык: Английский

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Innovative Enhancement of Mechanical and Thermal Properties of Polylactic Acid Foam by Adjusting Crystallization

Advanced Engineering Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Polylactic acid (PLA) foam, known for its biodegradability and biocompatibility, faces limitations due to poor melt viscosity low crystallinity. To address these issues, this research utilizes ethylene‐glycidyl methacrylate copolymer as a chain extender (CE) enhance PLA incorporates the nucleating agent diphenylhydrazide sebacic (ST‐NAB3) adjust crystallization characteristics. The CEPLA/ST‐NAB3 material is developed foamed using supercritical CO 2 an intermittent method. Observations by polarizing microscope differential scanning calorimeter show increases in both rate crystallinity of sample. When ST‐NAB3 content 0.4 wt%, transformation from spherulite string crystal morphology occurs. Rheological tests higher strength compared with pure PLA, thereby improving foaming behavior. temperature 108 °C, foam wt% has smallest cell size highest density, which are 55.38 μm 3.95 × 10 6 cells cm −3 , respectively. Following annealing treatment, compressive containing 5.35 MPa, while Vicat softening rises 87.4 °C. This study offers effective approach performance foams, expanding their potential applications various industries.

Язык: Английский

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Preparation of biomass fiber/polylactic acid foam using an oven-type free foaming method for energy savings and performance enhancement

Industrial Crops and Products, Год журнала: 2024, Номер 222, С. 119714 - 119714

Опубликована: Сен. 24, 2024

Язык: Английский

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