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
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
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.
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
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
Jianing Shen, Kai Wang, Zhao Ma, Nai Xu, Sujuan Pang, Lisha Pan
Summary: The impacts of PGA content on the properties of PBAT/PGA blends were studied, with an epoxy chain extender (ADR) used as a reactive modifier to improve interface compatibility and rheological properties. Compared to neat PBAT, PBAT/PGA/ADR blends showed better stiffness-ductility balance and processing stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Review
Polymer Science
Serena Coiai, Maria Laura Di Lorenzo, Patrizia Cinelli, Maria Cristina Righetti, Elisa Passaglia
Summary: Poly(lactic acid) (PLA) is a widely produced biobased, biodegradable and biocompatible polyester. Although it shares similarities with petroleum-based polymers, its high brittleness and low toughness limit its utilization, prompting the blending with other biobased and biodegradable polymers. By incorporating appropriate additives and solid nanoparticles, the toughness and ductility of PLA can be improved, enhancing its mechanical performance, thermal stability and gas/vapor barrier properties.
Article
Materials Science, Characterization & Testing
Laura Aliotta, Ilaria Canesi, Andrea Lazzeri
Summary: The preferential distribution of ATBC plasticiser in PLA-PBAT blends was studied, showing a preference for distribution in the PLA phase over the PBAT phase. Dynamic mechanical thermal analysis and analysis of Hansen Solubility Parameters supported these findings.
Article
Environmental Sciences
Subong Park, Bongseong Bae, Bong-jin Cha, Yun Jin Kim, Hyo Won Kwak
Summary: Nylon fishing nets cause damage to marine environments when lost, so a biodegradable poly(butylene succinate) (PBS) resin was developed. By adding adipic acid and ethylene glycol to PBS, poly(butylene adipate-co-butylene succinate-co-ethylene adipate-co-ethylene succinate) (PBEAS) resin with excellent properties and low melting point was synthesized. This resin can be used for gill nets, expanding the application of biodegradable fishing gear.
MARINE POLLUTION BULLETIN
(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
Polymer Science
Carlos Perez-Valdez, Guillermina Burillo, Rodrigo Navarro, Angel Marcos-Fernandez
Summary: PBS and PBSA were irradiated with gamma radiation up to a dose of 400 kGy, resulting in the formation of gel content. PBSA exhibited higher gel content compared to PBS. Analysis revealed that chain scission predominated over crosslinking. Branching and chain scission increased the dispersity and affected the molecular weight. NMR analysis showed the appearance of new species and changes in species with increasing dose. The thermal properties, especially crystallization temperature, were significantly affected by irradiation. Mechanical properties of both polymers were greatly reduced, making them fragile even at low doses.
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
Polymer Science
Juviya Mathew, Jyoti Prakash Das, Manoj Tp, Sudheer Kumar
Summary: The study focused on developing a biodegradable filament made from renewable resources as a more environmentally friendly alternative to petroleum-based polymer filament. By incorporating PBAT into the PLA matrix, the mechanical properties of the filament were improved, making it suitable for 3D printing applications. Additionally, the thermal and morphological characteristics of the blend filament were examined through various testing methods.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Polymer Science
Wen Lin, Yujin Zhao, Tingting Su, Zhanyong Wang
Summary: The degradation behavior of PBAT films by different concentrations of Fusarium solani cutinase (FsC) was investigated. It was found that FsC could degrade both the amorphous region and the crystalline region of PBAT films, and its degradation activity was concentration-dependent. High concentration of FsC resulted in significant degradation of PBAT films, while low concentration had less apparent effect. FsC concentration and degradation time did not significantly affect the molecular weight of degraded PBAT.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Polymer Science
Chengkai Liu, Chentao Li, Yanping Hao, Xiangyu Yan, Huiwen Deng, Hongwei Pan, Junjia Bian, Dongmei Wang, Yan Zhao, Huiliang Zhang
Summary: In this study, an environmentally friendly PBSA/PLA blend was prepared with the reactive compatibilizer BIPB. The addition of BIPB increased the melt strength and molecular weight of the blend, improved the compatibility between PBSA and PLA, and enhanced the mechanical and thermal properties of the blend.
JOURNAL OF POLYMER RESEARCH
(2023)