Article
Polymer Science
Shin Asano, Jaeyeong Choi, Thi Hang Tran, Nalinthip Chanthaset, Hiroharu Ajiro
Summary: The hydrolytic degradation of PLAs bearing cinnamic acid derivatives was conducted to modify PLA stereocomplex for a wide range of applications. The study showed that chain end modification improved the thermal properties and melting point of PLA, making it suitable for additional functionalities in PLA stereocomplex films.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Polymer Science
Ying Huang, Harald Bruenig, Regine Boldt, Michael Thomas Mueller, Sven Wiessner
Summary: The study investigated the effect of electron induced reactive processing (EIReP) on the properties of biodegradable PLA/PCL blends, showing improved fiber morphology, thermal and mechanical properties. Increasing PCL content enhanced the crystallinity of the PLA phase, while increasing take up speed increased the crystallinity of neat PLA.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Yinglan Zhang, Michael Thomas Mueller, Regine Boldt, Markus Stommel
Summary: In this study, high crystallinity polylactides (PLAs) were irradiated with electron beam to investigate the effects on radical decay and molecular structure transformation. It was found that high crystallinity can inhibit radical reactions and restrict the formation of crosslinking and long-chain branching.
Article
Biochemistry & Molecular Biology
Tunsuda Suparanon, Neeranuch Phusunti, Worasak Phetwarotai
Summary: Plastic garbage is a major environmental issue that affects humans, animals, and their surroundings. The use of biodegradable polymers as substitutes for traditional plastics is an effective solution to address this problem. This study focuses on the chemical modification of microcrystalline cellulose derived from oil palm empty fruit bunch waste and its application as a bio-filler in polylactide composites. The addition of tricresyl phosphate as a plasticizer and flame retardant enhances the toughness and flame inhibition of the composites. The findings suggest that this approach can effectively improve the properties of PLA composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Multidisciplinary
Peng Li, Wei Zhang, Miqiu Kong, Yadong Lv, Yajiang Huang, Qi Yang, Guangxian Li
Summary: By using VBGE as a branching agent, this study successfully prepared LCB-PLA with high foamability and heat resistance, greatly improving the melt strength and crystallization performance, and also enhancing processing flowability.
MATERIALS & DESIGN
(2021)
Article
Polymer Science
Marta Dobrosielska, Renata Dobrucka, Martyna Pajewska-Szmyt, Paulina Kozera, Ewa Gabriel, Julia Glowacka, Dariusz Brzakalski, Krzysztof J. Kurzydlowski, Robert E. Przekop
Summary: The study demonstrates that modifying high-filled composite samples with diatomaceous earth, silanes, and wax can significantly improve the processing properties of the composites, such as melt flow rate. The addition of different types of wax affects the flow rate, with natural wax aiding in filler dispersion and synthetic wax increasing the tendency to agglomerate the filler.
Review
Construction & Building Technology
Deepak Kumar, Apurba Mandal
Summary: The adverse effect of conventional construction materials on the environment has prompted researchers to explore the use of natural resources. Bamboo as a building material has gained increasing attention in biocomposite research. This study discusses the challenges and advantages of using laminated bamboo products (LBPs) as a replacement for traditional construction materials. The background and applications of bamboo are presented, along with different fabrication processes and mechanical properties of LBPs. Surface modification techniques for improving bamboo deterioration are also discussed, and the importance of future research in this field is highlighted.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Polymer Science
Ceren Yargici Kovanci, Mohammadreza Nofar, Abbas Ghanbari
Summary: This study proposes symbiosis approaches to enhance the flame retardancy behavior of polylactide (PLA) composites. The use of phosphorus-based flame retardants in neat PLA samples can achieve the desired flame retardancy, but it doesn't work in PLA composites containing glass fibers due to dripping. By adding chain modifiers, the dripping issue can be resolved and the flame retardancy and mechanical performance of the composites can be further improved.
Review
Chemistry, Multidisciplinary
Nalinthip Chanthaset, Hiroharu Ajiro
Summary: This review focuses on the chain end modification studies of polylactide, poly(butylene succinate), and poly(hydroxyalkanoate), covering initiators, chain extending, and degradation reactions. Recent literature on this topic is discussed, along with the developing trends and challenges of biodegradable polymers.
Article
Polymer Science
Aneta Gumowska, Eduardo Robles, Arsene Bikoro, Anita Wronka, Grzegorz Kowaluk
Summary: This study produced layered composites using different biopolymer adhesive layers. Among the pure biopolymers, PLA showed the best performance, while among the blends, PLA + PHB, PLA + PHB + 25MCC, and PLA + PHB + 25MCC + 3TEC performed the best. The mechanical properties of the composites decreased with increases in the MCC content, but adding 3% TEC improved the properties of the PLA + PHB + MCC blends.
Article
Chemistry, Physical
Xu Cheng, Gaolei Zhao, Wenjiang Qiang, Bingxin Huang
Summary: In this study, the Ni-rich cathode was modified with Ti and La to improve the cycling and rate performance. The modified cathode showed enhanced cycling stability and maintained the mechanical integrity of the cathode particles. The modification also increased the Li+ diffusion coefficient, leading to improved rate performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Biochemistry & Molecular Biology
Ping Wang, Zhenfeng Wang, Tong Yan, Liyuan Yang, Li Yang, Jiacheng Ling, Shaojie Feng, Pei Xu, Yunsheng Ding
Summary: Multifunctional composites containing multi-walled carbon nanotubes (CNTs), ammonium polyphosphate (APP), and a commercial multifunctional epoxy oligomer (MEO) as chain extender were prepared via melt blending to improve both the mechanical and flame retardant properties of polylactide/poly(butylene adipate-co-terephthalate) (PLA/PBAT) composites. The addition of 6% CNTs and 10% APP in the PLA5-PBAT5/10A/6C composite resulted in optimal flame retardant properties, with a limited oxygen index of 28.3%, decreased peak heat release rate (pHRR) of 368 kJ/m(2), and total heat release (THR) of 72 MJ/m(2). The co-continuous phases in the composite also improved its mechanical properties compared to PLA8-PBAT2 composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Agricultural Engineering
Zhiying Li, Xuyi Wang, Mengyun Wu, Songjun Yao, Jianping Guo, Meijun Chen, Siwei Xiong, Luoxin Wang
Summary: In this study, a polylactic acid/cellulose fiber ultrafine-fiber paper with a sandwich-like structure was developed using wet papermaking and laminated hot pressing techniques. The PLA/CF ultrafine-fiber paper exhibited remarkable mechanical properties and high biodegradability, making it a potential alternative to plastic straws.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Yuyin Zhao, Jiaxin Zheng, Pei Guo, Congxiao Wang, Menghao Guo, Chunling Xin, Yadong He
Summary: In this study, acid anhydride chain extenders SMA were used to improve the melt foaming properties and reduce the shrinkage rate of thermoplastic polyamide elastomers (TPAE) blended with polyamide 6 (PA6). The modified TPAE samples showed reduced melting enthalpy and enhanced gas penetration and foam shrinkage reduction. Additionally, the microcross-linked structure formed with increased PA6 content improved the storage modulus and strain recovery of the modified TPAE. The foaming temperature zone and recovery performance of all modified TPAE samples were significantly improved, resulting in reduced overall shrinkage rate, increased expansion ratio, more complete cell structure, and improved resilience.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Engineering, Manufacturing
A. K. Bledzki, P. Franciszczak, A. Meljon
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2015)
Article
Agricultural Engineering
A. K. Bledzki, P. Franciszczak, Z. Osman, M. Elbadawi
INDUSTRIAL CROPS AND PRODUCTS
(2015)
Article
Engineering, Manufacturing
P. Franciszczak, A. K. Bledzki
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2016)
Article
Polymer Science
Sandra Paszkiewicz, Anna Szymczyk, Piotr Franciszczak, Iman Taraghi, Daria Pawlikowska, Regina Jeziorska
Article
Engineering, Multidisciplinary
P. Franciszczak, K. Kalnins, A. K. Bledzki
COMPOSITES PART B-ENGINEERING
(2018)
Article
Engineering, Multidisciplinary
P. Franciszczak, E. Piesowicz, K. Kalnins
COMPOSITES PART B-ENGINEERING
(2018)
Article
Polymer Science
A. K. Bledzki, P. Franciszczak, A. Mamun
EXPRESS POLYMER LETTERS
(2014)
Article
Materials Science, Multidisciplinary
Adam Jaszkiewicz, Andrzej K. Bledzki, Andrzej Duda, Andrzej Galeski, Piotr Franciszczak
MACROMOLECULAR MATERIALS AND ENGINEERING
(2014)
Article
Mechanics
P. Franciszczak, J. Smolinski
Summary: This study evaluates the influence of reinforcement volume fraction and geometry on the positive hybrid effect of man-made cellulose fibres mixed with cellulose microfillers. The results show that the hybrid materials exhibit improved tensile and flexural performance due to the favorable combination of reinforcement, decreased void fraction, improved orientation of short fibres, and reduced stress relaxation during deformation.
COMPOSITE STRUCTURES
(2023)
Proceedings Paper
Materials Science, Composites
Remo Merijs Meri, Janis Zicans, Tatjana Ivanova, Ivan Bochkov, Madara Varkale, Piotr Franciszczak, Andrzej K. Bledzki, Janis Gravitis
9TH INTERNATIONAL CONFERENCE ON TIMES OF POLYMERS AND COMPOSITES: FROM AEROSPACE TO NANOTECHNOLOGY
(2018)
Article
Mechanics
P. Franciszczak, R. Merijs-Meri, K. Kalnins, A. K. Bledzki, J. Zicans
COMPOSITE STRUCTURES
(2017)
Article
Polymer Science
Adam Jaszkiewicz, Andrzej K. Bledzki, Piotr Franciszczak
