Article
Polymer Science
Yi-Pin Chen, Tsia-Shu Lo, Yu-Ting Lin, Yu-Han Chien, Chia-Jung Lu, Shih-Jung Liu
Summary: Degradable drug-eluting prolapse mats were developed using solution-extrusion 3D printing and coaxial electrospinning techniques. The mats, composed of PCL mesh and PLGA nanofibers with incorporated drugs, exhibited comparable mechanical properties to commercial non-degradable polypropylene knitted meshes for POP repair. In vitro release studies showed sustained release of drugs from the membranes, with no adverse effects observed in animal tests, indicating potential for POP applications.
Article
Chemistry, Applied
Qian Ren, Minghui Wu, Zhengsheng Weng, Xiuyu Zhu, Wanwan Li, Pengke Huang, Long Wang, Wenge Zheng, Masahiro Ohshima
Summary: The addition of cellulose nanofibers (CNFs) significantly reduced the half-crystallization time of the PLLA/PDLA blend, and when 3% modified CNFs were incorporated, almost exclusively SC crystallites were formed with no HC crystallite presence. This was speculated to be due to enhanced interchain molecular interactions between CNFs and PLA, presenting a feasible and efficient method for producing high-performance PLA materials with exclusively SC crystallites.
CARBOHYDRATE POLYMERS
(2022)
Article
Polymer Science
Atsuki Takagi, Yu- Hsu, Hiroshi Uyama
Summary: As the environmental pollution caused by plastic waste and dependence on petroleum resources become more serious, the demand for biodegradable plastics and bioplastics is increasing. This study successfully improved the toughness and biodegradability of poly(lactic acid) (PLA) through copolymerization.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Applied
Qian Ren, Minghui Wu, Long Wang, Wenge Zheng, Yuta Hikima, Takeshi Semba, Masahiro Ohshima
Summary: Adding biodegradable cellulose nanofibers to PLA matrix can significantly improve its crystallization properties and melt elasticity, as well as enhance the foaming behavior of PLA.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Characterization & Testing
Laura Aliotta, Vito Gigante, Ruben Geerinck, Maria -Beatrice Coltelli, Andrea Lazzeri
Summary: This study investigates the influence of PCL content on the micromechanical deformation processes and fracture mechanisms of PLA/PCL blends. Dilatometric uniaxial tests and SEM analysis were used to analyze the deformation behavior and morphology of the blends.
Article
Polymer Science
Cheng-Hsin Cheng, Ming-You Shie, Yi-Hui Lai, Ning-Ping Foo, Mon-Juan Lee, Chun-Hsu Yao
Summary: The study found that the 3D printed PCL scaffold outperformed the PLA scaffold, showing better physical properties and biocompatibility, and potentially offering stronger osteogenic ability.
Article
Chemistry, Applied
Qian Ren, Wanwan Li, Shijie Cui, Wenyu Ma, Xiuyu Zhu, Minghui Wu, Long Wang, Wenge Zheng, Takeshi Semba, Masahiro Ohshima
Summary: In this study, an innovative PLA/CNF nanocomposite foam with a bimodal cell structure was prepared using a simple one-step depressurization foaming process with supercritical carbon dioxide as the foaming agent. The cell structure of the foam was influenced by the crystallization rate and phase interface. The prepared foam exhibited high expansion ratio, low thermal conductivity, and excellent compression performance, making it suitable for applications in packaging and construction materials.
CARBOHYDRATE POLYMERS
(2023)
Article
Materials Science, Multidisciplinary
Hannah A. Lacy, Vera Jencova, David Lukas, Andrei Stanishevsky
Summary: This study investigates the production of blended nanofibrous biomaterials using high-yield alternating field electrospinning (AFES) of cold-water fish skin gelatin (FGEL) and polycaprolactone (PCL). The resulting FGEL/PCL nanofibers exhibited smooth surface morphology and average diameters ranging from 237-313 nm after thermal crosslinking. In-vitro analysis demonstrated good cellular viability and mesh stability of the FGEL/PCL nanofibrous biomaterials. AFES proves to be an efficient and scalable method for producing FGEL/PCL nanofibrous biomaterials with desired characteristics.
Article
Chemistry, Physical
Leila Yavari Maroufi, Marjan Ghorbani, Maryam Mohammadi, Akram Pezeshki
Summary: This study successfully prepared PLA/GG nanofibers containing thyme essential oil, which displayed smooth morphology and desirable biocompatibility, suitable for food packaging applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Nanoscience & Nanotechnology
Chenyu Liang, Jiaqi Li, Yuyang Chen, Lv Ke, Jintuo Zhu, Lina Zheng, Xiao-Peng Li, Shenghui Zhang, Heguo Li, Gan-Ji Zhong, Huan Xu
Summary: A combination of electrospinning and electrospray was used to functionalize poly(lactic acid) nanofibers, resulting in improved electroactivity and surface roughness, as well as excellent PM-capturing and antibacterial properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Seyede Elaheh Ghafouri, Seyed Rasoul Mousavi, Maliheh Khakestani, Shahla Mozaffari, Narges Ajami, Hossein Ali Khonakdar
Summary: This study investigates the release of levetiracetam using poly(lactic acid), poly(epsilon-caprolactone), and their blend electrospun nanofibers as novel systems. Scanning electron microscopy confirms the smooth and beads-free morphology of the samples. With increasing levetiracetam content, the average diameters of the nanofibers also increase. FTIR spectroscopy is used for structural confirmation and observation of functional groups. X-ray diffraction reveals a decrease in crystallinity and different drug release kinetics are evaluated using various models.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Construction & Building Technology
Chang Xu, Ce Sun, Han Wan, Haiyan Tan, Jianing Zhao, Yanhua Zhang
Summary: By using AC as foaming agent and adding PCL to improve performance, PLA/RS bio-composite foams were successfully processed. The foams exhibited significantly improved properties and excellent insulation performance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Qian Ren, Minghui Wu, Long Wang, Wenge Zheng, Yuta Hikima, Takeshi Semba, Masahiro Ohshima
Summary: This study proposes a scalable and green foam injection molding technique to produce high-performance PLA foams by adding cellulose nanofibers. The added nanofibers significantly improve the properties of PLA and enhance the foaming ability, resulting in the successful production of PLA foam material with improved performance. This green strategy opens up new possibilities for developing fully-biobased, lightweight and high-performance PLA material.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Chemistry, Physical
Olawale Monsur Sanusi, Abdelkibir Benelfellah, Lazaros Papadopoulos, Zoi Terzopoulou, Lamprini Malletzidou, Isaak G. Vasileiadis, Konstantinos Chrissafis, Dimitrios N. Bikiaris, Nourredine Ait Hocine
Summary: In this study, a hybrid nanofiller of Mt and MWCNT was successfully prepared and incorporated into PLA matrix to improve the material properties. Physicochemical studies and structural analyzes revealed strong hybrid-polymer interaction and synergy between nanoclay and carbon nanotubes. Thermal characterizations and mechanical properties testing demonstrated that the Mt/MWCNT hybrid nanofillers effectively restricted the motion of PLA segments and enhanced the mechanical performance of the polymer matrix.
APPLIED CLAY SCIENCE
(2021)
Article
Polymer Science
Qianjin Zhu, Kaixin Chang, Liyan Qi, Xinyi Li, Woming Gao, Qinwei Gao
Summary: In this study, PLLA films were surface-modified using different solutions, leading to changes in their structure and properties. The modification with PDLA weakened the crystal structure of the films, while modification with PDLAG increased the stereocomplex (SC) structure and decreased the homogeneous crystal (HC) structure.
