Article
Materials Science, Composites
Tej Singh, Laszlo Lendvai, Gabor Dogossy, Gusztav Fekete
Summary: The study found that increasing wood waste content resulted in certain properties of the composite materials increasing, such as modulus, porosity, and water absorption, while other properties decreased such as density, tensile strength, impact strength, and stress at break. However, the flexural strength of the composites remained relatively constant. Differential scanning calorimetry analysis showed that wood waste helped increase the glass transition and cold crystallization temperature of PLA composites.
POLYMER COMPOSITES
(2021)
Article
Chemistry, Multidisciplinary
Han-Seung Ko, Sangwoon Lee, Doyoung Lee, Jae Young Jho
Summary: By introducing PGA fibers and HA into PLA composites and modifying HA, the tensile and flexural strength of PLA/HA-g-PLA composites were improved, along with enhancing the interfacial adhesion between HA and the PLA matrix.
Article
Polymer Science
Mohammad Hassan Shahavi, Peyman Pouresmaeel Selakjani, Mohadese Niksefat Abatari, Petar Antov, Viktor Savov
Summary: This research investigated the effects of adding wood leachate powder as a cost-effective filler to novel poly (lactic acid) biocomposites. The results showed that the inclusion of the filler improved the mechanical properties, hydrophobic nature, and antibacterial activity of the biocomposites.
Article
Thermodynamics
Willian Hermogenes Ferreira, Cristina Tristao Andrade
Summary: The addition of rGO in PLA improved the crystallinity and thermal stability, increased molecular mobility, and significantly enhanced the thermally induced shape memory properties.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Biochemistry & Molecular Biology
Bincheng Huang, Zhenfeng Wang, Jiaying Tu, Chao Liu, Pei Xu, Yunsheng Ding
Summary: Imidazolium-functionalized polyurethane (IPU) functionalized multi-walled carbon nanotubes (CNTs) were used to control interfacial distribution and compatibilization of CNTs, and enhance electromagnetic interference (EMI) shielding and mechanical properties of poly(lactic acid)/polycaprolactone (PLA/PCL) based composites. The EMI shielding properties for the PLA/PCL/8CNT/0.8IPU composites have been evidently increased to 35.6 dB. Meanwhile, the elongation at break and the notched impact strength of the PLA/PCL/8CNT/0.8IPU composite reached 307.8 % and 51.3 kJ/m2, respectively, which are increased by 27 and 53% of PLA/PCL/8CNT due to the compatibilization effect of IPU and the distribution of CNTs.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Nedjma Tazibt, Mustapha Kaci, Nadjet Dehouche, Mohamed Ragoubi, Leonard Ionut Atanase
Summary: The effect of hydroxyapatite (HAp) synthesized by the chemical precipitation process on the morphology and properties of poly(lactic acid) (PLA)-based composites was investigated. It was found that the addition of 5 wt% HAp led to a slight improvement in the thermal stability and tensile properties of the composite material compared to neat PLA and other composite samples. The study also highlighted the potential use of HAp as a reinforcement in PLA composite materials.
Article
Chemistry, Physical
Monica Vidotto, Branka Mihaljevic, Gordana Zauhar, Elvira Vidovic, Nadica Maltar-Strmecki, Damir Klepac, Srecko Valic
Summary: This study investigated the effects of gamma-radiation on PLA, a biodegradable polymer with wide applications. Results showed that the concentration and decay rate constant of radicals in PLA depend on the absorbed dose. Additionally, irradiated PLA exhibited a loss of material elasticity and an increase in brittleness with increasing absorbed dose.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Polymer Science
Zhi-Jun Chen, Chi-Hui Tsou, Meng-Lin Tsai, Jipeng Guo, Manuel Reyes De Guzman, Tao Yang, Chen Gao, Yan Lei, Pei-Wen Gan, Shuang Chen, Lian-Jie Tu, Chang-Lei Qu, Ruo-Yao Wang, Chin-San Wu
Summary: This study focuses on preparing PLA/biomass composites by blending Chinese Spirits distiller's grains (CSDG) biomass and PLA, as well as analyzing the improved barrier and mechanical properties of the composites. The impact of CSDG content on crystallinity and the compatibility between filler and matrix are discussed, along with discussions on barrier and biodegradation mechanisms.
Article
Polymer Science
Eduardo Ruiz-Silva, Mirleth Rodriguez-Ortega, Luis Carlos Rosales-Rivera, Francisco Javier Moscoso-Sanchez, Denis Rodrigue, Ruben Gonzalez-Nunez
Summary: Blends of PLA/LMDPE with different weight ratios were prepared using rotational molding and two mixing strategies, DB and MB. Thermal, morphological, and mechanical analyses showed that the blends' thermal stability, morphology, and mechanical properties were affected by the blending technique. DB generated larger particle sizes compared to MB, and blends with different PLA contents exhibited synergistic effects in tensile and flexural properties.
Article
Polymer Science
Lidong Feng, Xinchao Bian, Gao Li, Xuesi Chen
Summary: By investigating the thermal properties, morphology, and thermal stability of PLLA/PDLA blends, a new stereoamorphous mesophase (sam-PLA) structure was discovered, and the relationship between different phases in the PLLA/PDLA blends was explored.
Article
Multidisciplinary Sciences
Xiaohui Song, Wenfang Guan, Huadong Qin, Xingguo Han, Lingfang Wu, Yishen Ye
Summary: In this study, poly(lactic acid)/walnut shell/hydroxyapatite (PLA/WS/HA) composite filaments were prepared using fused deposition modeling (FDM) technology. The addition of either HA or WS improved the thermal stability and water absorption of PLA, but decreased the tensile and compression strength. The fillers toughened the PLA matrix, resulting in higher tensile elongation and compressive strain. The tensile and compressive strengths of samples significantly decreased after water-immersion for 6 weeks. Scaffold structures manufactured using FDM indicated that PLA/WS/HA composites have potential applications in structural parts such as bone implants.
SCIENTIFIC REPORTS
(2022)
Article
Construction & Building Technology
Sabarinathan Palaniyappan, Gnanavelbabu Annamalai, Narain Kumar Sivakumar, Prahadeeswaran Muthu
Summary: In this study, functionally gradient multimaterial composites were developed using PLA and WPLA. The single-gradient PW composite exhibited better compressive performance and hardness values, suitable for semi-structural applications. The WPW composite with PLA as the inner core showed superior thermal conductivity and wear resistance, making it a suitable material for high-wear and thermal proofing applications.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Polymer Science
Jacek Andrzejewski, Marek Szostak
Summary: This article presents research on the development of a new type of composite materials prepared using the overmolding method, with the use of prepreg for overmolded inserts. The study found that the reinforcing efficiency of the used prepreg overmolding procedure was very high, leading to significant improvement in sample modulus and impact test results. Most studies confirmed high adhesion between the composite insert and the injection-molded material, demonstrating the effectiveness of the methodology.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Dan Xiao, Jin-Xiang Lv, Fang-Juan Wu, Zi-Bo Wang, Kathrin Harre, Jian-Hong Chen, Uwe Gohs, De-Yi Wang
Summary: This paper investigates the use of a novel bio-based nucleation agent FPPA for the fabrication of fire safety PLA/FPPA composites. The results show that FPPA not only provides high thermal stability, but also enhances the fire safety of PLA. Additionally, it has minimal impact on the transparency and mechanical properties of PLA.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Polymer Science
S. F. K. Sherwani, E. S. Zainudin, S. M. Sapuan, Z. Leman, A. Khalina
Summary: The research evaluated the properties of treated sugar palm fiber/glass fiber reinforced poly(lactic acid) hybrid composites, showing promising physical, mechanical, and morphological results for potential use in automotive component manufacturing.