Article
Materials Science, Multidisciplinary
Huayin Wen, Min Wang, Shikai Luo, Yuanlin Zhou, Tao Liu
Summary: A scalable and blending route using silicone rubber (SR) with different crosslinking temperature compared to EPDM was developed to improve the mechanical properties of EPDM foams. The addition of SR in the pre-crosslinking process of EPDM forms a complete crosslinking network, enhancing the compatibility between EPDM and SR and improving the mechanical properties of EPDM foams. When comparing SR/EPDM foam with traditional EPDM foam, the former shows significantly increased tensile strength and compressive strength at similar foam densities, reaching a maximum tensile strength and compressive strength of 3.58 MPa and 0.59 MPa, respectively.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Zhanlin Shi, Guoqun Zhao, Lei Zhang, Guilong Wang
Summary: The innovative method of blending PVDF with PMMA resulted in foam with wider foaming window and excellent performance. The blend foams showed improved expansion ratio, thermal insulation, and flame retardancy, with high rigidity and lower heat release rate.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Yichong Chen, Shun Yao, Yijie Ling, Wenyu Zhong, Dongdong Hu, Ling Zhao
Summary: Supercritical CO2 molding compression foaming is an emerging technology for preparing thick microcellular polymer sheets. The molding compression foaming behavior of polyethylene terephthalate (PET) is systematically studied in a specific temperature and CO2 foaming pressure range.
ADVANCED ENGINEERING MATERIALS
(2022)
Review
Materials Science, Composites
Haifeng Fang, Zheng Rong, Rui Liu, Hanlin Sun, Zhen Wang
Summary: A method to simulate the extrusion flow of viscoelastic non-Newtonian fluid was proposed in this study. The effects of shear rate, extrusion speed, and initial concentration of CO2 on bubble nucleation and growth in PET microcellular foam sheet were numerically analyzed. The results showed that the bubble size distribution is more uniform under certain conditions, and the initial concentration of CO2 has the greatest impact on bubble density.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Chemistry, Physical
Yijie Ling, Shun Yao, Yichong Chen, DongDong Hu, Zhenhao Xi, Ling Zhao
Summary: The rapid depressurization foaming process using supercritical CO2 as blowing agent is effective in preparing microcellular epoxy foams, with curing reaction and CO2 diffusion playing crucial roles in controlling cell morphology. Experimental and molecular simulation results demonstrate that higher CO2 pressure promotes curing reaction and CO2 diffusion, while there is an optimal curing degree range where unsaturated CO2 concentration and curing degree contribute to good cell structure.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Chemistry, Physical
Kailong Zuo, Kun Li, Zhigeng Yun, Guangjian He, Syed Rashedul Islam, Yang Yang, Xiaoli Zhang, Jingbo Chen
Summary: This study investigated the foamability and mechanical properties of isotactic polypropylene (iPP) by incorporating isotactic polypropylene fiber (iPPF). The results showed that the addition of iPPF improved the foamability of iPP, resulting in increased cell density and enhanced mechanical properties.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Polymer Science
Yi-Huan Lee, Chia-Wei Lee, Chia-Han Chou, Chia-Hsing Lin, Yu-Hao Chen, Chin-Wen Chen, Tun-Fun Way, Syang-Peng Rwei
Summary: In this study, a sustainable polyamide foam system was developed using a bio-based dimer diamine monomer to synthesize a new series of polyamide elastomers. The introduction of the branched-structured dimer diamine monomer effectively enhanced nucleation sites for cell growth and melt strength, overcoming traditional polyamide 6 foaming difficulties. The foam system showed high expansion ratio and robust dimensional stability, with the added benefit of being recyclable and reprocessable due to non-crosslinking and additive-free properties.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Peng Chen, Xiulu Gao, Ling Zhao, Zhimei Xu, Naixiang Li, Xiaohu Pan, Junming Dai, Dongdong Hu
Summary: Fully biodegradable poly(butylene succinate-butylene terephthalate) (PEST)/poly (lactic acid) (PLA) microcellular foams were successfully prepared using supercritical carbon dioxide. The addition of PLA improved the thermal properties and resulted in an optimal microcellular structure.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Chemistry, Multidisciplinary
Jialong Chai, Guilong Wang, Jinchuan Zhao, Aimin Zhang, Zhanlin Shi, Chao Wei, Guoqun Zhao
Summary: The PLA/PMMA shape memory foam produced through microcellular foaming exhibits excellent shape memory performance, showcasing the promising future of environmentally friendly polymer materials.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Multidisciplinary
Kesong Yu, Yi Wu, Xiaoli Zhang, Junji Hou, Jingbo Chen
Summary: This study successfully prepared high-expansion poly(lactic acid)/poly(lactic acid) foam with excellent oil-water separation performance, and demonstrated its advantages in adsorption capacity, adsorption-desorption cycles, and heat resistance.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Polymer Science
Alireza Ghasemzadeh, Navid Famili
Summary: This research studied the effect of crystallinity on the final structure of microcellular foam. By controlling the temperature gradient, the crystallization rate can be controlled, thus affecting the formation of cells.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Yaqiao Wang, Shihong Chen, Jianguo Mi, Zhongjie Du, Xiangdong Wang, Chen Zhang
Summary: A method for regulating crystallization was developed to prepare micro- and nano-cellular foams of PBT using supercritical CO2. By modifying PBT with branching and crosslinking structures, the crystallization temperature and enthalpy of crystallization were altered, resulting in a transition from microcellular to nanocellular foam. This transition was only observed in PBT with a crosslinked structure, leading to the transformation of microcellular PBT foams to nanocellular ones with optimized polymer chain structure and foaming conditions.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Materials Science, Multidisciplinary
Yanting Li, Pengjian Gong, Yunjie Liu, Yanhua Niu, Chul B. Park, Guangxian Li
Summary: By utilizing crosslinking, microphase separation, crystallization, and supercritical CO2 solid foaming, environmentally friendly EVA/LDPE foams with excellent mechanical properties and zero formamide were successfully produced.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Chemical
Yu-Ting Hsiao, Chieh-Ming Hsieh, Tsung-Mao Yang, Chie-Shaan Su
Summary: This study presents a case study on producing microcellular foam of commercial TPU through supercritical CO2 foaming process. The effects of saturation temperature and pressure on the expansion ratio, cell size, and density were investigated. Results show that the expansion ratio can reach as high as 4.4, while cell size and density can be controlled within certain ranges by adjusting the saturation conditions.
Article
Energy & Fuels
Xiakai Song, Xincheng Cui, Xiang Su, Bacha Munir, Dongxing Du
Summary: This paper experimentally investigates the rheology behavior of nanoparticle-stabilized CO2 foam in porous media. The results show different rheology behavior between gaseous CO2 foam and supercritical CO2 foam, with the latter exhibiting universal shear thickening behavior and higher maximum viscosity. The presence of oil and solution salinity also affect the apparent viscosity of nanoparticle-stabilized CO2 foam.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Polymer Science
Jose A. Reglero Ruiz, Saul Vallejos, Ana M. Sanjuan, Felix C. Garcia, Mikel Mugica, Miguel Angel Rodriguez-Perez, Jose M. Garcia
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Chemistry, Physical
Jose A. Reglero Ruiz, Saul Vallejos, Blanca S. Pascual, Cipriano Ramos, Sagrario Beltran, Felix C. Garcia, Jose M. Garcia
JOURNAL OF SUPERCRITICAL FLUIDS
(2018)
Article
Polymer Science
Blanca S. Pascual, Miriam Trigo-Lopez, Cipriano Ramos, Maria Teresa Sanz, Jesus L. Pablos, Felix C. Garcia, Jose A. Reglero Ruiz, Jose Miguel Garcia
EUROPEAN POLYMER JOURNAL
(2019)
Article
Engineering, Environmental
Blanca S. Pascual, Saul Vallejos, Jose A. Reglero Ruiz, Juan C. Bertolin, Cesar Represa, Felix C. Garcia, Jose M. Garcia
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Polymer Science
Blanca S. Pascual, Miriam Trigo-Lopez, Jose A. Reglero Ruiz, Jesus L. Pablos, Juan C. Bertolin, Cesar Represa, Jose Cuevas, Felix C. Garcia, Jose M. Garcia
EUROPEAN POLYMER JOURNAL
(2019)
Article
Polymer Science
Miriam Trigo-Lopez, S. Vallejos, Jose A. Reglero Ruiz, Cipriano Ramos, Sagrario Beltran, Felix C. Garcia, Jose M. Garcia
Article
Polymer Science
Miriam Trigo-Lopez, S. Vallejos, Jose A. Reglero Ruiz, Alejandra Garcia-Gomez, Maria Seara-Martinez, Felix C. Garcia, Jose M. Garcia
Review
Materials Science, Biomaterials
Miriam Trigo-Lopez, Jose A. Reglero Ruiz, Saul Vallejos, Cipriano Ramos, Sagrario Beltran, Felix C. Garcia, Jose M. Garcia
Article
Polymer Science
Luca Nuvoli, Paola Conte, Costantino Fadda, Jose Antonio Reglero Ruiz, Jose M. Garcia, Salvatore Baldino, Alberto Mannu
Summary: By mixing fish gelatin, Tara gum, and glycerol in different ratios and subjecting Tara gum to ball milling treatment, films with different morphologies can be obtained. The amount of glycerol and the type of Tara gum used strongly influence the morphology and density of the films, which in turn determine the thermal and mechanical behaviors. Improvements in thermal stability and mechanical properties can be achieved by using milled Tara gum or increasing glycerol content, up to 20 wt%. Exceeding this percentage of glycerol is detrimental to film quality and reduces thermal and mechanical performances.
Article
Chemistry, Analytical
Marta Guembe-Garcia, Victoria Santaolalla-Garcia, Natalia Moradillo-Renuncio, Saturnino Ibeas, Jose A. Reglero, Felix C. Garcia, Joaquin Pacheco, Silvia Casado, Jose M. Garcia, Saul Vallejos
Summary: The concentration of amino acids in chronic wounds correlates with their healing process, and a test kit has been developed to detect this relationship, aiding in the diagnosis of chronic wounds. The kit is a colorimetric sensory polymer film that changes color upon contact with amino acids, allowing for quantification of the amino acid concentration by analyzing a photograph taken with a smartphone.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Applied
Lara Gonzalez-Ceballos, Miguel A. Fernandez-Muino, Sandra M. Oses, M. Teresa Sancho, Saturnino Ibeas, Jose Antonio Reglero Ruiz, Saul Vallejos
Summary: A new method for determining honey diastase activity using a polyacrylic film as a container, combined with starch azure, shows good correlation with the Schade reference assay and has the potential to significantly reduce analysis time and cost in small laboratories.
Article
Chemistry, Physical
Miriam Trigo-Lopez, Jose A. Reglero Ruiz, Patricia D. Peredo, Aranzazu Mendia, Asuncion Munoz, Felix C. Garcia, Jose M. Garcia
Summary: Three novel aromatic diamines with varying lengths of oxyethylene sequences were synthesized and polymerized to create twelve poly(ether amide)s. The presence of polydisperse PEO sequences in the polymer backbone was found to significantly impact the crystallinity, flexibility, solubility, and thermal properties of the polymers. This study highlights the importance of the polydispersity of PEO segments within the structural units on the properties of the resulting materials.
Article
Chemistry, Physical
M. Trigo Lopez, J. A. Reglero Ruiz, J. L. Pablos, D. E. Ciurduc, T. Corrales, F. C. Garcia, J. M. Garcia
Summary: This work focuses on preparing novel solid polymer electrolytes based on flexible microporous aramids filled with photopolymerized ionic liquids and lithium salt, which exhibit high ionic conductivity and excellent thermal and mechanical properties. The study demonstrates the feasibility of these materials as flexible and thermally stable solid electrolytes.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Polymer Science
Andrea Rubio-Aguinaga, Jose Antonio Reglero-Ruiz, Asuncion Munoz, Felix C. Garcia, Jose M. Garcia, Miriam Trigo-Lopez
Summary: Low-density porous aramid films were fabricated using inexpensive and widely available polymers as porosity promoters. The density reduction and pore size increase were achieved by the removal of the porosity promoter polymers, resulting in a significant increment in Young's modulus. The morphology of the films was controlled by the proportion and nature of the porosity promoter polymer.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Chemistry, Analytical
Jose Antonio Reglero Ruiz, Ana Maria Sanjuan, Saul Vallejos, Felix Clemente Garcia, Jose Miguel Garcia