Review
Polymer Science
Maria Laura Di Lorenzo
Summary: PLLA and PBS are biodegradable, compostable, and biocompatible polymers that have complementary properties, making blending them an opportunity to exploit their favorable characteristics. However, research on the properties of PLLA/PBS blends has yielded contradictory results, creating complexity in their utilization.
Article
Chemistry, Multidisciplinary
Rong Wang, Xiaojie Sun, Lanlan Chen, Wenbin Liang
Summary: In this study, biodegradable blends of PGA and PBAT with in situ compatibilization using MDI were prepared. The addition of PBAT was found to increase the complex viscosity and storage modulus of the blends, leading to improved compatibility and impact strength. The morphology of the dispersed phase evolved from spherical structure to in situ microfiber, enhancing interfacial adhesion and improving toughness.
Article
Polymer Science
Maryam Safari, Ricardo A. Perez Camargo, Laura Ballester-Bayarri, Guoming Liu, Agurtzane Mugica, Manuela Zubitur, Dujin Wang, Alejandro J. Mueller
Summary: This study explores the possibility of blending PBS and PCL with BSxCLy copolymers and systematically studies the crystallization behavior of the blends. The results show that the PBS/BS78CL22 blend exhibits good miscibility at high PBS content, while the PCL/BS15CL85 blend still displays partial miscibility at high PCL content. The BS46CL54 copolymer can crystallize in both PBS and PCL type crystals, depending on the polymeric matrix.
Article
Polymer Science
Muhammad Saeed Ullah, Rumeysa Yildirim, Lulia Caraseva, Ester Zuza, Guralp Ozkoc, Mehmet Kodal
Summary: This study investigates the effect of mono- and multi-epoxide POSS nanoparticles on the compatibility of PLA/PBS blends from a rheological perspective. The addition of PBS reduces the viscosity and moduli, indicating weak interactions between polymers. However, the presence of MoEpPOSS and MuEpPOSS increases viscosity and moduli by forming complex polymeric structures. MuEpPOSS shows stronger interaction due to its multiple epoxide groups. The introduction of POSS improves dispersion, phase homogeneity, and compatibility, as observed in the Cole-Cole plots, and enhances interfacial adhesion.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Todsapol Kajornprai, Supakij Suttiruengwong, Kalyanee Sirisinha
Summary: The research focused on the impact of crystalline morphology and phase structure on the properties of polymer blends, showing that manipulating crystalline morphology through short-time annealing can affect impact toughness and thermal stability. By adding a plasticizer like poly(ethylene glycol) and heat treatment, a significant enhancement in impact strength and heat resistance of the blends can be achieved, demonstrating changes in fracture mechanism from crazing to shear yielding in the annealed samples.
Article
Biochemistry & Molecular Biology
Guoqiang Wang, Li Zhang, Xiang Chi
Summary: Due to its superior tensile strength, biodegradability, and biocompatibility, poly(lactic acid) (PLA) has become a growth-oriented biodegradable material. However, its poor ductility has limited its practical applications. To address this, ductile blends were prepared by melt-blending poly(butylene succinate-co-butylene 2,5-thiophenedicarboxylate) (PBSTF25) with PLA, which significantly improved the ductility of PLA. The addition of PBSTF25 promoted cold crystallization and stretch-induced crystallization of PLA, and the resulting blends exhibited improved ductility and processing properties. The toughening effect of PBSTF25 was found to be better than that of poly(butylene succinate).
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Thermodynamics
Todsapol Kajornprai, Kalyanee Sirisinha
Summary: The influence of post-process annealing treatment on the structural and thermal behaviors of poly(L-lactic acid)/poly(butylene succinate) (PLLA/PBS) blend was investigated. It was found that the temperature and addition of plasticizer can significantly affect the crystalline structure and melting behavior of the samples. Multiple melting behaviors observed were attributed to simultaneous melting, recrystallization, and remelting of PLLA and PBS crystals in the blends.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Polymer Science
Xiuzhi Tian, Haozhe Bai, Ting Chen, Shen Sang, Haibo Deng, Xue Jiang
Summary: The electronic packaging materials are a significant part of electronic devices and contribute to the plastic composition of electronic waste. As over 50 million tons of electronic waste is generated annually, it leads to serious environmental pollution. Biodegradable polymers are considered as potential materials for environmentally-friendly electronic packaging, but their thermal conductivity is poor. Thus, enhancing the thermal conductivity of these polymers is crucial for the development of novel electronic packaging materials.
Article
Polymer Science
Nazan Koca, Clizia Aversa, Massimiliano Barletta
Summary: The mechanical recycling of PLA/PBS-based formulations with additives was investigated in this study. A simulation of the recycling process was performed using secondary raw materials in the formulations. The results showed that the thermal properties and chemical composition of the blends were not drastically affected by the use of secondary raw materials, indicating their suitability for manufacturing bioplastic blends. The efficiency of a multi-epoxy chain extender in the mechanical recycling of PLA/PBS blends was also studied.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Food Science & Technology
Suwara Vorawongsagul, Patcharee Pratumpong, Chiravoot Pechyen
Summary: The research investigated the effects of cellulose fiber addition on the properties of PLA/PBS/CF composite materials, showing that the addition of cellulose fiber can enhance the strength and thermal resistance of the composites. As the amount of cellulose fiber increased, the tensile strength, tensile modulus, and percentage of elongation at break also increased.
FOOD PACKAGING AND SHELF LIFE
(2021)
Article
Polymer Science
Laura Aliotta, Alessandro Vannozzi, Ilaria Canesi, Patrizia Cinelli, Maria-Beatrice Coltelli, Andrea Lazzeri
Summary: The study investigated PLA/PBSA biobased binary blends with different compositions of PBSA, produced by twin screw-extrusion. It was found that adding an epoxy oligomer (EO) improved the compatibility of the rubber phase with the PLA matrix. Different micromechanical responses were observed for blends with varying compositions, with EO causing a significant change in the response of certain blends.
Article
Polymer Science
Katerina Papadopoulou, Panagiotis A. A. Klonos, Apostolos Kyritsis, Ondrej Masek, Christian Wurzer, Konstantinos Tsachouridis, Antonios D. D. Anastasiou, Dimitrios N. N. Bikiaris
Summary: Biodegradable polymers, such as poly(butylene succinate) (PBSu) biocomposites, containing biochar (BC) filler can improve mechanical properties, thermal transitions, and biodegradability. The addition of BC enhances tensile and impact strengths, facilitates crystallization, and increases thermal diffusivity and conductivity. However, it also causes an increase in overall dielectric permittivity. Furthermore, the enzymatic hydrolysis degradation rate of biocomposites is found to increase with increasing BC content.
Article
Biochemistry & Molecular Biology
Lau Kia Kian, Mohammad Jawaid, Mohamed Mahmoud Nasef, Hassan Fouad, Zoheb Karim
Summary: Dual-layer membranes of poly(lactic acid) and poly(butylene succinate) filled with cellulose nanowhisker were fabricated for removing metal ions from wastewater. The addition of nanowhisker improved membrane porosity and filtration performance, but could affect heat resistance. In continuous operation tests, the 3% CNW filled membrane showed the highest removal efficiency for cobalt and nickel metal ions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Chengkai Liu, Zhengyi Han, Xiangyu Yan, Jinshuo Yu, Qiao Zhang, Dongmei Wang, Yan Zhao, Huiliang Zhang
Summary: In this study, a novel and environmentally friendly PBSA/sc-PLA blend was obtained by melt-blending equimolar amounts of PLLA and PDLA with PBSA. The formation of sc-PLA in the PBSA matrix was confirmed by differential scanning calorimetry and wide-angle X-ray diffractometry, and the sc-PLA was uniformly dispersed in the PBSA matrix. The addition of sc-PLA increased the strength, heat resistance, and hydrolytic degradation resistance of the PBSA matrix, providing an effective strategy to improve the performance and expand the application scope of PBSA materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
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.