Article
Materials Science, Composites
Xuan Wang, Limei Song, Xuehua Zhou
Summary: Poly(butyl acrylate) (PBA) was grafted onto cellulose nanowhiskers (CNW) via transesterification and solution polymerization. The modified CNW improved the strength, toughness, and thermal stability of the PLA/CNW-g-PBA nanocomposites. The combination of surface-functionalized CNWs and PLA has a wide range of applications in packaging and biomedical products.
POLYMER COMPOSITES
(2023)
Review
Materials Science, Composites
Ling Zhou, Kai Ke, Ming-Bo Yang, Wei Yang
Summary: This review summarizes recent research on the chemical modification strategies of cellulose in PLA/cellulose composites over the past five years, focusing on two major classifications: reactions of small molecules modified cellulose and reactions of polymers modified cellulose. The review discusses the relationship between the structure of grafted small molecules/polymers and the mechanical properties of PLA composites, and addresses common problems hindering the development of high-performance PLA/cellulose composites through chemical modification.
COMPOSITES COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Jihuai Tan, Min Yu, Tongtong Zhang, Nengkun Huang, Zhaolin Cao, Lifen Wei, Xinbao Zhu
Summary: The utilization of cellulose-based polypropoxy ether carboxylates (CPPEC) can enhance the properties of polylactic acid (PLA), especially improving its elongation at break and low-temperature resistance. Additionally, CPPEC shows increased migration resistance compared to other additives in PLA.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Yaowalak Srisuwan, Yodthong Baimark
Summary: This paper reports a study on flexible polymer blends made from PLLA-PEG-PLLA and TPS. The addition of TPS suppressed crystallizability of PLLA and PLLA-PEG-PLLA matrices, while greatly increasing the thermal stability of PLLA-PEG-PLLA. The PEG middle-blocks enhanced phase compatibility between PLLA-PEG-PLLA and TPS, resulting in ductile and flexible blend films.
CARBOHYDRATE POLYMERS
(2022)
Review
Polymer Science
Sixiang Zhai, Qingying Liu, Yuelong Zhao, Hui Sun, Biao Yang, Yunxuan Weng
Summary: This paper summarizes the research progress of modifying polylactic acid with lignin and cellulose in recent years, focusing on the effects of lignin and cellulose on the mechanical properties of polylactic acid composite materials. It is expected that the development of polylactic acid composite materials will be improved in this regard.
Review
Polymer Science
Nikolaos D. Bikiaris, Ioanna Koumentakou, Christina Samiotaki, Despoina Meimaroglou, Despoina Varytimidou, Anastasia Karatza, Zisimos Kalantzis, Magdalini Roussou, Rizos D. Bikiaris, George Z. Papageorgiou
Summary: Poly(lactic acid) (PLA) is a promising biobased substitute for fossil-derived polymers due to its compostability, biocompatibility, renewability, and good thermomechanical properties. However, PLA has some shortcomings, and different end-use sectors require specific properties. The addition of different nanofillers has been investigated to enhance the properties of PLA, and this review paper provides an overview of the synthetic routes, properties, and applications of PLA nanocomposites.
Review
Green & Sustainable Science & Technology
Ricard Garrido, Luisa F. Cabeza, Victor Falguera, Omar Perez Navarro
Summary: Cow manure, an abundant residue, can contaminate water bodies and soils if not properly managed. The lignocellulosic fraction in cow manure can be used to produce lactic acid, which can be further polymerized to create promising bioplastics.
Review
Biochemistry & Molecular Biology
Mehrajfatema Zafar Mulla, Md Ramim Tanver Rahman, Begonya Marcos, Brijesh Tiwari, Shivani Pathania
Summary: Poly lactic acid (PLA) is a compostable and recyclable sustainable alternative, with challenges in brittleness and delicacy that can be improved through nanoparticle reinforcement. PLA shows promising potential as a replacement for traditional petrochemical-based polymers in food packaging applications.
Article
Biochemistry & Molecular Biology
Ruth Anayimi Lafia-Araga, Ronald Sabo, Omid Nabinejad, Laurent Matuana, Nicole Stark
Summary: In this study, cellulose nanofibrils were modified by catalyzed lactic acid esterification in an aqueous medium. The modification improved the mechanical properties of the films, reduced water absorption, and enhanced barrier properties. The addition of lactic acid-grafted CNF to PLA composites improved water vapor permeability, showing potential for environmentally friendly modification of CNFs.
Article
Polymer Science
Masrat Rasheed, Mohammad Jawaid, Bisma Parveez
Summary: This study investigates the effects of cellulose nanocrystals (CNC) from bamboo fiber on the properties of poly (lactic acid) (PLA)/poly (butylene succinate) (PBS) composites. The addition of CNC improves the thermal stability, tensile strength, and modulus of the composite, while reducing elongation at break.
Review
Polymer Science
Ineke Velghe, Bart Buffel, Veerle Vandeginste, Wim Thielemans, Frederik Desplentere
Summary: This review paper provides an overview of the state of the art on process-induced degradation of poly(lactic acid) (PLA) and the relative importance of different processing variables. The review focuses on degradation during melt processing techniques, such as injection molding and extrusion, and discusses general processing and fundamental variables, material properties for monitoring degradation, the effects of processing variables, and additives for melt stabilization. Despite existing knowledge on degradation reactions and their effects on PLA properties, gaps still remain in selecting and predicting processing conditions that minimize process-induced degradation.
Article
Polymer Science
Yangzhe Hou, Han Jia, Yamin Pan, Chuntai Liu, Changyu Shen, Xianhu Liu
Summary: This study successfully prepared brand-new porous PLA films with enhanced flexibility and heat resistance using blade coating and thermally induced phase separation methods. The resulting blend films showed improved mechanical properties and high porosity, making them suitable for microfiltration, packaging, and modified applications.
Article
Chemistry, Multidisciplinary
Chung-Fu Yu, Syang-Peng Rwei, Yao-Chi Shu
Summary: We synthesized a PLA-PETA polymer modified with acrylic trifunctional groups using a one-pot method based on ring-opening polymerization. Molecular weight and structure of PLA-PETA were determined using GPC and NMR spectroscopy. The photocrosslinked PLA-PETA showed high transparency and thermal stability, and exhibited good biocompatibility with cells.
Article
Polymer Science
Mengmeng Wang, Xianrong Liang, Heng Wu, Linlin Huang, Gang Jin
Summary: In this study, super toughened PLA-based blends were successfully prepared by melt blending PLA with EVA and compatibilizing with E-MA-GMA. The addition of E-MA-GMA promoted phase adhesion and increased interface thickness, resulting in a super-toughened blend with incomplete fracture behavior during impact tests. The maximum impact strength of 77.6 kJ/m(2) was achieved with 12 wt% E-MA-GMA in the ternary blend, showing a 27.7 times improvement over neat PLA. Rheological and micromorphology analysis demonstrated enhanced viscosity and reduced crystallinity in the ternary blends.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Agricultural Engineering
Mohamed Aouay, Albert Magnin, Jean-Luc Putaux, Sami Boufi
Summary: Cellulose nanocrystals (CNCs) were incorporated into poly-L(lactid acid) (PLLA) matrices using a single melt-processing mode with poly(ethylene glycol) (PEG) as carrier. The effects of CNC content on nucleation and reinforcement efficiency, as well as mechanical properties and melt rheology, were investigated. The results showed that adding CNCs and aminated CNCs (Am-CNCs) significantly improved the tensile modulus and strength, with the best performance at 2% nanofiller content, especially for Am-CNCs. Similar trends were observed in the melt rheology of the PLLA/PEG blend.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
