2023年4月18日 · Poly (l -lactic acid) (PLLA) films have excellent piezoelectric properties, but the strong hydrophobicity of the surface makes it difficult for cells to attach there. PLLA nanofibers have good biocompatibility, but the weak piezoelectric coefficient limits the ability of the nanofibers to stimulate cell growth.

2024年9月1日 · The PLLA film was effectively sandwiched between two layers of polycaprolactone (PCL) films, resulting in the creation of an entirely organic and flexible stethoscope characterized by heightened sensitivity and a stable frequency response.

2022年12月9日 · With excellent recoverable energy density, high efficiency, good cyclic reliability, low-cost preparation method, self-healing ability, and eco-friendliness, the crystallized biodegradable PLLA film provides an eco-friendly and high-performance candidate to develop high-energy-storage capacitors.

2023年1月24日 · High temperature rubbing is a fast and low-cost method to prepare highly oriented films of polymers. This contribution describes the fabrication of smooth and pin-hole-free poly (lactic acid) (PLA) thin films of controlled structure and morphology using a combination of rubbing at moderate temperature (T ≤ 100°C) and thermal annealing.

2019年10月21日 · We designed active PLLA film with high potential for intensive interactions with cells, very important for further biomedical applications, including exploring the effect of piezoelectricity on...

2023年4月26日 · Stimulation with 1 MHz US particularly promoted actin filaments in cells on the surface of piezoelectric filler-modified PLLA films with a high aspect ratio (PLLA BT NTRs DR5 and PLLA HAp NRs DR5) (Figure 7a1) and enabled significant enhancements in their formation in comparison with 80 kHz US stimulation (Figure 7a2).

2022年9月21日 · Due to the stepwise crystallization behavior of polymorphous poly (l -lactide) (PLLA) films, the surface crystalline structures of thin PLLA films supported on Si/SiO x substrates with various thicknesses of both the film and adsorbed layer were investigated separately by grazing incidence wide-angle X-ray diffraction (GIWAXD).

2024年5月1日 · Compared to the PLLA film, the blend film demonstrates significantly improved toughness, making it more suitable for yogurt packaging in terms of meeting transportation and sales requirements. Comparison with PE/NY, a commercially available yogurt packaging film, PLLA/PLBIGA films exhibit similar mechanical properties that far exceed those of ...

In this paper, the effect of film formation method and annealing on the crystallinity of PLLA are investigated. The films are made through solvent casting and spin coating methods, and subsequent annealing is conducted. The resulting crystalline morphology, structure, conformation, and intermolecular

2020年10月1日 · To improve the piezoelectric properties of melt-spun poly (l -lactic acid) (PLLA)/BaTiO 3, we optimized the post-processing conditions to increase the proportion of the β crystalline phase. The α...