Article
Materials Science, Composites
Hezhi He, Bida Liu, Bin Xue, He Zhang
Summary: Biodegradable polymer blends were prepared by melt blending PLA, PBAT, and MMT, and the effects of MMT on the structure, morphology, thermal, and mechanical properties of the blends were thoroughly investigated. MMT was found to preferentially localize at the interface of PLA and PBAT, and esterification reaction occurred between the organic-modified MMT and PLA/PBAT. MMT enhanced the compatibility and thermal stability, and accelerated crystallization of PLA and PBAT, with a significant reinforcing effect on the tensile strength of PBAT.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mojtaba Mohammadi, Marie-Claude Heuzey, Pierre J. Carreau, Aurelie Taguet
Summary: The morphology and rheological properties of poly(lactic acid) and poly(butylene adipate-co-terephthalate) blends were studied in the presence of cellulose nanocrystals, with the CNCs being highly dispersed after solution casting but agglomerating after melt mixing. This led to a decrease in complex viscosity and storage modulus of the nanocomposites, and prevented droplet coalescence in the blend nanocomposites under shearing at 0.1 s(-1).
Article
Polymer Science
Huidong Shi, Yanfeng Zhu, Qing Ju, Yucai Shen, Tingwei Wang
Summary: In this study, the mechanical properties and structure of starch/PBAT blends were improved by the addition of tartaric acid and chain extender. The effect of masterbatch on the foamability and properties of starch foams was also investigated, revealing significant improvements in compressive strength, recovery, and water resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
W. Ramiro Cordova, Daniel Julve, Maria Martinez, Jorge Perez, Johann G. Meier
Summary: This study investigated dual filler networks of spherical and layered particles in elastomer-reinforcement with silica, doped with organically-modified layered silicates, to explore the influence of the organic modifier on the mechanical properties of rubber composites. It was found that the system containing organically modified octosilicate exhibited higher exfoliation/intercalation and more homogeneous surface modification, resulting in interesting mechanical properties suitable for technical rubber applications.
APPLIED CLAY SCIENCE
(2021)
Article
Chemistry, Physical
Thyago Camelo Pereira da Silva, Allef Gabriel da Silva Fortes, Iago Rodrigues de Abreu, Laura Hecker de Carvalho, Yeda Medeiros Bastos de Almeida, Tatianny Soares Alves, Renata Barbosa
Summary: This study aims to produce biodegradable agricultural artifacts using 3D printing technology, using fibers of PLA/PBAT and NPK fertilizer adsorbed on organophilized bentonite. The results show that systems containing organobentonite release fertilizer at a slower rate and the release data fits the Korsmeyer-Peppas kinetic model better.
Article
Polymer Science
Wenfeng Li, Jinhao Huang, Weifeng Liu, Xueqing Qiu, Hongming Lou, Lu Zheng
Summary: In this study, lignin-modified PBAT biocomposites with enhanced tensile strength were successfully prepared by introducing interfacial modifiers to construct dynamic bonds. The results demonstrated that the interfacial modifiers significantly improved the mechanical properties and interfacial compatibility of the composites, providing an effective strategy for developing high-performance and low-cost lignin/PBAT composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Dongzhi Zhu, Eiji Kurahashi, Hui You, Toru Wada, Patchanee Chammingkwan, Toshiaki Taniike
Summary: In graft-type polypropylene (PP)-based nanocomposites, improving the dispersion of nanofillers and enhancing mechanical properties can be achieved by in situ grafting and surface modification of nanofillers.
Article
Thermodynamics
Alinda Oyku Akar, Jale Hacaloglu
Summary: The study found that composite materials containing 1 mass% BDBA had a homogeneous dispersion, while materials with higher BDBA content showed agglomeration. Intercalated dispersion was the main form of dispersion for composites containing nanoclay. The addition of BDBA can decrease the thermal stability of the composite materials, but as the amount of BDBA increases, thermal stability also increases.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Multidisciplinary
Lei Li, Patrick Van Rijn
Summary: In this study, surface modifiers and intercalation modifiers were used to modify layered double hydroxides (LDHs) in order to improve their dispersion and compatibility in the polylactic acid (PLA) matrix. PLA/LDHs nanocomposites were prepared using a sonication-assisted solution compounding method. The results show that the addition of LDHs modified through different methods and concentrations not only affects the thermal properties and crystallinity of the PLA/LDHs composites, but also improves the tensile strength and elongation at break of PLA.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Applied
Chenhao Zhang, Fangping Chen, Wei Meng, Chengqiang Li, Ruihua Cui, Zhean Xia, Changsheng Liu
Summary: By modifying polyurethane prepolymer and introducing different contents of amylose, a modified starch-poly(butylene adipate co-terephthalate) film with high amylose content and excellent performance was successfully prepared. The crystallinity, hydrophobicity, oxygen-barrier properties, and mechanical properties of the film increased with the increasing amylose content, indicating its potential use in biodegradable applications such as packaging materials, agricultural films, and garbage bags.
CARBOHYDRATE POLYMERS
(2021)
Article
Nanoscience & Nanotechnology
Minho Lee, Song- Han, Changkyu Kim, Subramaniam Velumani, Arum Han, Abdel Hadi Kassiba, Homero Castaneda
Summary: The ultrathin nanocomposite coatings of ZrO2/ZnO/TiO2 on stainless steel were found to provide excellent corrosion protection and antimicrobial activity. The coating exhibited significantly higher impedance values compared to uncoated steel, and promoted cell proliferation and effective bacterial killing efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Juan Shi, Jinli Zheng, Ben Liang, Fengmin Song, Jin Wang, Shaobo Guo, Hongguang Ge, Yanhong Gao, Tianlei Zhang
Summary: Integrating metal nanocomposites into a matrix is a promising approach for improving material properties. In this study, Fe3O4@SiO2@mTiO2-NH2@Ag (FSTN-Ag) nanocomposites were synthesized and demonstrated high catalytic activity and antibacterial properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Zhekun Liu, Fantao Meng, Xianggang Tang, Chengzhuang Su, Qinglin Mu, Guannan Ju
Summary: In this study, PBAT/CaCO3 composite films were prepared by incorporating nano-sized calcium carbonate fillers into the biodegradable material PBAT. The effects of particle size, content, and titanate coupling agent modification on the properties of the composite films were investigated. The results showed that the addition of modified CaCO3 improved the overall performance of PBAT/CaCO3 composite films, enhancing thermal stability and crystallization. Furthermore, the modified CaCO3 increased water resistance and reduced water vapor permeability of the films when a suitable amount of titanate coupling agent was added.
Article
Materials Science, Multidisciplinary
Maria Chiara Mistretta, Luigi Botta, Francesco Paolo La Mantia, Antonino Di Fiore, Marco Cascone
Summary: Biodegradable polymer-based nanocomposite films show potential advantages in agricultural applications, with added nanofillers increasing rigidity and tear strength of the films without compromising ductility.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Materials Science, Composites
Sheida Esmaielzadeh, Hashem Ahmadizadegan
Summary: Novel polyimide/clay nanocomposites were prepared by incorporating organically modified clay into the polyimide matrix. The nanocomposites exhibited good dispersion of clay in the matrix and intercalation between the clay and polyimide macromolecules. The mechanical properties of the nanocomposites were improved, and the gas permeation increased with the increase in organoclay loading.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)