Article
Biochemistry & Molecular Biology
Shuang Qiu, Yuchun Li, Peng Qi, Dan Meng, Jun Sun, Hongfei Li, Zheng Cui, Xiaoyu Gu, Sheng Zhang
Summary: A novel bio-based flame retardant LC-PA was prepared by a Mannich reaction and combined with TA to enhance fire performance and biodegradability of PLA. The introduction of LC-PA/TA accelerated the degradation rate of PLA in soil, providing a practical approach for high flame retardancy and rapid biodegradability in bio-based polymers.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Green & Sustainable Science & Technology
Jiao Li, Yingxiao Wang, Jun Lin, Ya Liu, Guilong Wang, Dong Quan, Yanjin Guan, Guoqun Zhao, Shengcheng Ji
Summary: In this study, a green ramie fiber reinforced Poly (lactic acid) composite foam was prepared using environmentally friendly CO2 as the foaming agent. The biodegradable ramie fiber not only retained the green nature of Poly (lactic acid), but also enhanced the foaming performance. The unique cavity structure of the plant fiber absorbed a large amount of CO2, promoting the solubility of CO2 in the composite and improving the crystallinity. The use of ramie fiber and CO2 resulted in the formation of regular and refined micropores in the foam structure.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biotechnology & Applied Microbiology
Tiantang Fan, Jingwen Qin, Xiao Meng, Jiafeng Li, Qing Liu, Guannan Wang
Summary: PLPG membranes with sc-PLA improved the crystallizing behavior of PLLA segments, increased thermal stability and degradation ability, and showed low cytotoxicity.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Materials Science, Characterization & Testing
Hyemin Yang, Soo-Yong Park, Sung Bae Park, Jeyoung Park, Sung Yeon Hwang
Summary: In this study, a biodegradable packaging material with good transparency, low-level migration, and improved mechanical properties was prepared by blending transparent flexible PLA (TF-PLA) with various lactic acid-based ester precursors (LAEPs). The TF-PLA exhibited good flexibility and elongation at low temperatures, making it highly potential for deep freeze packaging applications.
Article
Chemistry, Physical
Ling Wang, Yanfei Gao, Junpeng Xiong, Weili Shao, Chen Cui, Ning Sun, Yuting Zhang, Shuzhen Chang, Pengju Han, Fan Liu, Jianxin He
Summary: This study introduces a new method for creating biodegradable and reusable fibrous mask filters using true nanoscale bio-based poly(lactic acid) (PLA) fibers. The designed filter exhibits high filtration efficiency and low pressure drop, making it suitable for mask preparation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Composites
Haifeng Chen, Chunfa Dai, Yue Long, Shaohua Zeng, Ru Xia
Summary: By designing a nanostructured starch acetate-montmorillonite hybrid, remarkable enhancements in mechanical, thermal, and barrier properties of poly(lactic acid)/starch acetate composite films were achieved. The synergistic effect of starch acetate and montmorillonite contributed to the improved performance. The resulting PLA-based composite films showed good water/oxygen barrier performance and excellent biodegradability, making them potential packaging materials.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Multidisciplinary
Honglei Kang, Xudong Jiang, Zhiwei Liu, Fan Liu, Guoping Yan, Feng Li
Summary: Biodegradable scaffolds based on biomedical polymeric materials were prepared using composite materials of PTMC/PLA/HA and PTMC/HA, showing low toxicity, good biodegradability, and biocompatibility while enhancing the cell multiplication ability of osteoblast cells.
Article
Engineering, Biomedical
Isabel Hui, Eva Pasquier, Amalie Solberg, Karin Agrenius, Joakim Hakansson, Gary Chinga-Carrasco
Summary: New 3D printable bone repair material based on PLA and chitosan has been developed, showing adequate mechanical strength, antibacterial properties, and biodegradability. This material has the potential to address the challenges of bone defects and infections in clinical practice.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Shiling Jia, Yunjing Chen, Junjia Bian, Hongwei Pan, Xiangyu Wang, Ling Zhao, Lijing Han, Huiliang Zhang, Lisong Dong, Huixuan Zhang
Summary: Blends of Poly(L-lactic acid) (PLLA) with excellent low-temperature toughness and strength were prepared by melt compounding with acrylic ester based impact resistance agent (AEIR). The addition of AEIR dramatically improved the toughness of PLLA in a wide temperature range, especially at low temperatures, while maintaining high tensile strength.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Wachirabhorn Pongputthipat, Yupaporn Ruksakulpiwat, Pranee Chumsamrong
Summary: This study aims to develop sustainable and biodegradable biocomposite films using renewable and environmentally friendly materials. Different films containing poly(lactic acid), natural rubber, and rice straw were produced using the cast film extrusion method. The addition of rice straw fiber decreased the tensile properties of the films, but ductile fracture behavior was still observed with appropriate amounts. The degradation of the films increased with higher amounts of rice straw. The biocomposite films also showed potential for use in agricultural products like planting bags.
Article
Materials Science, Multidisciplinary
Ankita Chaubey, Keshaw R. Aadil, Harit Jha
Summary: The study successfully synthesized lignin-polylactic acid (PLA) blended film with excellent antimicrobial activity and biodegradability. The properties of the film were studied using SEM, XRD, DSC, and TGA, showing thermal stability and amorphous nature of the film.
MATERIALS TECHNOLOGY
(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.
Article
Polymer Science
Mitul Kumar Patel, Marta Zaccone, Laurens De Brauwer, Rakesh Nair, Marco Monti, Vanesa Martinez-Nogues, Alberto Frache, Kristiina Oksman
Summary: Poly(lactic acid)-poly(hydroxybutyrate) (PLA-PHB)-based nanocomposite films were prepared using extrusion and film-blowing processes with bio-based additives and a compatibilizer. The blowing process of the ChNC-nanocomposite resulted in a stable and homogeneous film, while the PLA-PHB blend and CNC-nanocomposite led to non-homogeneous films with wrinkles and creases. The addition of ChNCs improved the mechanical performance and oxygen barrier performance of the PLA-PHB blend.
Article
Biochemistry & Molecular Biology
Guiying Li, Yanping He, Wanqing Han, Yang Yu, Linhua Zhu, Tian Si, Yanlin Sun
Summary: This research aimed to prepare high encapsulation efficiency poly(lactic acid) microspheres via an improved solvent evaporation method with foam-transfer. The critical process of foam transfer was studied, and factors affecting it were investigated. Results showed that appropriate oil/water ratio, stirring rate, and concentrations of PVA and EtOH could aid in producing enough foam for effective foam-transfer, leading to enhanced delivery efficiency of microspheres.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Environmental
Harrison de la Rosa-Ramirez, Miguel Aldas, Jose Miguel Ferri, Franciszek Pawlak, Juan Lopez-Martinez, Maria Dolores Samper
Summary: Biodegradable materials based on PLA and a phenolic free modified rosin resin were studied under composting conditions. The resin was blended with different concentrations using industrial plastic processing techniques. The effects of the resin on PLA's compatibility, physical performance, water absorption, mechanical behavior, thermal stability, and microstructure were assessed. The incorporation of the resin decreased thermal degradation resistance and slowed down composting disintegration. Higher resin content resulted in delayed water diffusion and decreased diffusion coefficients. Mechanical properties decreased, but a saturation effect was observed at resin contents higher than 3 phr. The optimal amount for good interaction, complete miscibility, and material cohesion was found to be 3 phr.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
