Article
Polymer Science
Kai Weng, Fang Li, Yumiko Takayama, Motomu Nishijo, Toshihisa Tanaka
Summary: This study investigated the effects of different soaking solvents on the crystallization and stretching properties of polymer films. Different results were observed in terms of microcrystal nucleation and stretching structure, depending on the soaking conditions. Soaking in ice-water or hexane promoted the formation of microcrystal nucleation and increased the tensile strength, while soaking in methanol inhibited the mobility and stretchability. Soaking in air maintained the amorphous state of the molecular chains.
Article
Polymer Science
Hongyi Gan, Takumi Okada, Satoshi Kimura, Ken-ichi Kasuya, Tadahisa Iwata
Summary: This study utilized a simple melt-homogenizing method to produce microbeads from four biodegradable polyesters, which are commonly found in cosmetics and personal care products. The microbeads ranged in size from 25 to 200 μm, had smooth surfaces, and exhibited comparable compression strengths to conventional microbeads like polyethylene and polypropylene. Particularly, poly(butylene succinate adipate) and poly[(R)-3-hydroxybutyrate] microbeads showed high biodegradability and have the potential to replace conventional microbeads.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Polymer Science
Cheng Zhou, Juan Wang, Jianxi Li, Jie Shi
Summary: An efficient preparation method for flame retardant silicon rubbers (FRSR) using melamine cyanurate (MCA) was established. The study analyzed the thermal aging mechanisms and flame retardancy of FRSR, finding that aging decreases tensile strength, increases cross-linking density, and embeds MCA in the samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Enrique Javier Jimenez-Regalado, Carolina Caicedo, Abril Fonseca-Garcia, Claudia Cecilia Rivera-Vallejo, Rocio Yaneli Aguirre-Loredo
Summary: The use of starch and chitosan blends for producing biodegradable packaging materials has been explored, and the addition of chitosan has been found to enhance the physical, mechanical properties, as well as the water vapor barrier of the films. The composite films consisting of starch and chitosan are excellent choices for developing biodegradable packaging materials for the food industry.
Article
Engineering, Biomedical
Xian Tong, Li Zhu, Yihao Wu, Yiting Song, Kun Wang, Shengbin Huang, Yuncang Li, Jianfeng Ma, Cuie Wen, Jixing Lin
Summary: This study reports the development of a new biodegradable Fe/Zn-3Cu composite fabricated by infiltration casting and hot-rolling, which shows high mechanical strength, fast degradation rate, good biocompatibility, higher cell viability, and efficient antibacterial ability. The HR Fe/Zn-3Cu composite has great potential as a biodegradable implant material for bone-fixation applications.
ACTA BIOMATERIALIA
(2022)
Article
Crystallography
Weiyan Jiang, Wenzhou Yu
Summary: The application of biodegradable alloys in orthopedic implants has gained significant attention. The research investigated the performance of a Mg-1Zn-xSn alloy and found that it exhibited enhanced mechanical properties and in vitro degradation performance compared to the Mg-1Zn alloy. The Mg-1Zn-1.0Sn alloy showed particularly promising results, with extremely low corrosion rate and hydrogen release, as well as zero cytotoxicity grade.
Article
Materials Science, Multidisciplinary
Huai Yao, Boyang Fang, Huina Shi, Harishchandra Singh, Marko Huttula, Wei Cao
Summary: The study investigated the microstructure, mechanical properties, and degradation behavior of as-extruded Mg-1.8Zn-0.5Zr-xGd alloys. It was found that the alloys exhibited optimal performance under certain extrusion conditions. The presence of various second phases in the alloys showed different behaviors with increasing Gd content, leading to variations in mechanical properties and corrosion resistance.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Characterization & Testing
Beom-Gon Cho, Jung-Eun Lee, Seung-Yeol Jeon, Han Gi Chae
Summary: Polyacrylonitrile (PAN) films blended with shellac, a biodegradable polymer, were prepared by a simple solution casting method. The miscibility of PAN with shellac polymer was investigated, and the optimal concentration of shellac that resulted in hydrogen bonding between shellac and PAN chain was determined. The introduction of shellac segments facilitated the disruption of the crystalline structure of the PAN chain, leading to a lower oxidation temperature in the PAN/shellac blends film. The optimal PAN/shellac blends film exhibited superior mechanical properties compared to the control PAN film.
Article
Polymer Science
Qi Liu, Yue Wang, Jialei Liu, Xiaowei Liu, Yanyan Dong, Xin Huang, Zhichao Zhen, Jun Lv, Wenqing He
Summary: This study compared the effects of biodegradable mulches (BDMs) and polythene (PE) films on cotton production, and investigated the degradation behavior and property changes. The results showed that the BDMs gradually degraded during mulching, but to a lesser extent compared to PE films. These findings are important for promoting the application of BDMs in cotton fields.
Review
Food Science & Technology
Bin Wang, Bin Yu, Chao Yuan, Li Guo, Pengfei Liu, Wei Gao, Dapeng Li, Bo Cui, A. M. Abd El-Aty
Summary: With increasing awareness of environmental protection, the development of eco-friendly sustainable biomaterials as alternative strategy to reduce petroleum-based raw materials is necessary. Starch, especially corn starch, has been used as a renewable material for developing biodegradable packaging due to its properties. The addition of plasticizers can improve the mechanical and barrier properties of starch-based films, but may reduce water resistance. This study focuses on changes in starch granules during gelatinization, types of biodegradable films, and the influence of plasticizers on corn starch-based films.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Chemistry, Applied
Liliane S. F. Leite, Francys K. V. Moreira, Luiz H. C. Mattoso, Julien Bras
Summary: Adjusting pH, CNCs content, and film-forming drying temperature is an effective strategy for improving the physical properties of Gel/CNCs films. Electrostatic attractive forces can reduce water vapor permeability, while the formation of complex coacervates may decrease mechanical properties.
FOOD HYDROCOLLOIDS
(2021)
Article
Biochemistry & Molecular Biology
Jutarat Prachayawarakorn, Pornthip Kansanthia
Summary: The poor properties of native cassava starch film can be improved through dual modification methods, such as hydrogen peroxide oxidation and glutaraldehyde crosslinking. This results in starch films with lower water uptake, better mechanical properties, stiffness, extensibility, and thermal properties. The sequential dual modification process also leads to enhanced performance in terms of swelling power, moisture absorption, and biodegradability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Chengwei Ji, Aibin Ma, Jinghua Jiang, Haoran Wu, Huan Liu, Sensen Guo, Yuxuan Yuan
Summary: A combined process of cold rolling and equal channel angular pressing (ECAP) was developed to improve the mechanical properties and localized corrosion of Zn-0.6Mg alloy for biodegradable implants. After cold rolling and ECAP processing, the alloy exhibited significantly improved strength and ductility compared to the as-cast alloy, with the alloy processed by 8-pass ECAP+CR75% (ER) showing the best mechanical properties. The eutectic phase fragmentation and grain refinement caused by cold rolling and ECAP process reduced the galvanic corrosion tendency of the alloy, resulting in improved corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Dereje Kebebew Debeli, Linbo Wu, Fangfang Huang
Summary: Novel nanocomposite coating films (NCCFs) composed of PBAT substrate and thin sulfonated PBAT/MMT nanocomposite coating (NCC) layer were prepared. The NCC layer endows the NCCFs with superior oxygen barrier and highly improved stiffness, while the PBAT substrate mainly contributes to the tensile strength and toughness.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Environmental Sciences
Chong Yang, Yang Zhao, Bibo Long, Feiyan Wang, Fayong Li, Dong Xie
Summary: Biodegradable mulch films have shown potential as a substitute for polyethylene (PE) films to reduce white pollution and improve crop yield. However, the mechanisms behind the yield-increasing effect are still unclear. This study investigates the effects of different biodegradable film treatments on soil and winter potatoes, and provides insights into the relationships between film degradation, soil properties, soil bacterial community, and potato yield using a PLS-PM model. Rating: 8/10.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)