Generation of Tough Poly(glycolic acid) (PGA)/Poly(butylene succinate-co-butylene adipate) (PBSA) Films with High Gas Barrier Performance through In situ Nanofibrillation of PBSA under an Elongational Flow Field

Yang, Fan; Zhang, Caili; Han, Yu; Ma, Zhirui; Weng, Yunxuan

doi:10.1007/s10118-023-2972-9

Cited by 4 publications

(1 citation statement)

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“…Consequently, degradable polymers have become one of the effective solutions to mitigate the environmental crisis and free from dependence on oil resources. Polybutylene succinate (PBS) is a biodegradable polymer with excellent biocompatibility and full biodegradability, rapidly emerging as a research hotspot among degradable polymer materials [4][5][6][7] . However, the inherent shortcomings of poor toughness, low thermostability, and high crystallinity hinder its further application.…”

Section: Introductionmentioning

confidence: 99%

Modification on PBS using epoxy-functionalized core-shell starch particles

Liu,

Ren,

et al. 2024

Preprint

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Polybutylene succinate (PBS) is an aliphatic linear polyester that is known for its excellent biodegradability and biocompatibility, making it one of the most promising application polymers. However, its disadvantages of poor toughness, low thermostability, and high crystallinity limit its large-scale commercial applications. In this article, a novel epoxy-functionalized core-shell starch particle (CSP-GMA) is successfully synthesized by virtue of soap-free emulsion polymerization, which consists of a "hard" starch (St) core and a "soft" ethyl acrylate (EA) shell grafted with glycidyl methacrylate (GMA). A binary blend of biodegradable polymers is prepared via a melt blend process with CSP-GMA as a core-shell particle modifier and PBS as a polymer matrix. The mechanical properties, thermal behavior, crystallization properties, stability and microscopic morphology of PBS/CSP-GMA blends are thoroughly studied. The incorporation of 20 wt% CSP-GMA into the PBS blend promotes an increase in the impact strength by 55% and the elongation at break by 173% higher than that of pure PBS respectively, which indicates that our work proposes an efficient strategy for fabricating PBS blends with good comprehensive properties and low cost. The DSC testing shows that the crystallinity of PBS blend is reduced in comparison to PBS, while the crystallization temperature is also decreased, confirming that CSP-GMA can facilitate the crystallization of PBS. The SEM observation reveals that owing to the compatibility arising between two phases interface due to the presence of epoxy group on core-shell starch particle surface, CSP-GMA is better dispersed in the PBS matrix, resulting in the improvement for performance of PBS blends.

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Section: Introductionmentioning

confidence: 99%

Modification on PBS using epoxy-functionalized core-shell starch particles

Liu,

Ren,

et al. 2024

Preprint

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Development and Characterization of Poly(butylene succinate‐co‐adipate)/Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) with Cowpea Lignocellulosic Fibers as a Filler via Injection Molding and Extrusion Film‐Casting

Masanabo,

Tribot,

Luoma

et al. 2024

Macro Materials & Eng

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Biodegradable poly(butylene succinate‐co‐adipate)/Poly(3‐hydroxybutyrate‐co‐3‐hydoxyvalerate) (PBSA/PHBV) filled with lignocellulosic sidestream/fibers from cowpea, a neglected and underutilized African crop are produced by injection molding and extrusion film casting. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) suggests that the fibers have more affinity and interfacial interaction with PBSA than PHBV. This is shown by a decrease in dampening of PBSA and an increase in dampening of PHBV with fiber addition. In addition, fiber addition results in more homogeneous crystal morphology of PBSA, while resulting in more heterogeneous crystal morphology of PHBV. The tensile strength of injection molded bio‐composites increases with fiber addition due to good interfacial adhesion between the matrix and fibers revealed by scanning electron microscope. In contrast, the tensile strength of bio‐composite films decreases with fiber addition due to the high‐volume fraction of pores in bio‐composite films that act as stress raisers. The stiffness of both injection molded, and bio‐composite films increase with fiber addition, as revealed by an increase in Young's modulus and storage modulus, while the tensile strain decreases. In conclusion, low‐value cowpea sidestream can be used as a filler to produce injection molded bio‐composites and bio‐composite films for potential application as rigid and flexible packaging.

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