Article
Polymer Science
Xuan-Yu He, Ting Wang, Zhong-Cheng Pan, Abdul Qadeer Dayo, Jun Wang, Wen-Bin Liu
Summary: In this article, a novel multifunctional benzoxazine monomer MB-FH was successfully synthesized with high reaction efficiency and short reaction time. The introduction of hydroxyl groups greatly improved the curing and thermal properties of polybenzoxazine.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Analytical
Chin-Wen Chen, Hsu-I. Mao, Yu-Chun Hsu, Tien-Wei Shyr
Summary: A series of poly(butylene adipate-co-butylene itaconate) (PBAPI) copolyesters were synthesized, and the thermal degradation behaviors were studied using TGA-GC/MS techniques. The introduction of a small amount of ethylenediaminetetraacetic acid (EDTA) inhibited the formation of cyclic compounds. Increasing the butylene itaconate (BI) content resulted in an increased ratio of CO2 and furan derivatives, and a reduced concentration of cyclopentanone and cyclic compounds during decomposition. The presence of both EDTA and BI inhibited the generation of cyclic compounds due to the formation of partial crosslinking for chemical structures.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Physical
Yu Pan, Jin Zheng, Yangyang Xu, Xiaogang Chen, Mengmeng Yan, Jinlei Li, Xu Zhao, Yanlai Feng, Yuhan Ma, Mengyuan Ding, Rongwu Wang, Jianxin He
Summary: In this study, a polyimide aerogel with excellent mechanical strength and thermal properties was synthesized using a combination of electrospinning, freeze-drying, and in situ thermal crosslinking. The resulting aerogels exhibited low density, high porosity, high tensile strength, good compressive fatigue resistance, and excellent thermal insulation, making them excellent candidates for thermal insulation materials in high and low-temperature environments.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Karolina Mozelewska, Adrian Krzysztof Antosik
Summary: This study investigated the influence of various silicone compounds on pressure-sensitive adhesives. By modifying the adhesives, the thermal resistance, shrinkage, and viscosity were improved, resulting in significant enhancement of the properties of silicone self-adhesive adhesives.
Article
Polymer Science
Konstantin Osetrov, Mayya Uspenskaya, Vera Sitnikova
Summary: This study proposes alternative oxidizing systems for tannin oxidation, aiming to reduce the harmful impact of iodine compounds. Gelatin-tannin hydrogels were synthesized using H2O2/DMSO/KMnO4/KIO4 oxidants and characterized through various methods. The results show the potential of these hydrogels as stimuli-responsive systems for drug delivery, with good mechanical properties and sorption capacity, making them suitable for applications in biomaterials.
Article
Polymer Science
Xiaotong Zhang, Jingyu Hou, Miao Wu, Jiajia Ye, Shuai Zhang, Xiaobo Liu
Summary: Benzoxazine resin has great potential as a matrix for high performance composites. In this study, melamine was introduced into aldehyde-containing mono-cyclic benzoxazine to improve its low crosslinking density and poor curing activity. The results showed that the addition of triazine-structured melamine could lower the curing temperature, increase the crosslinking density, and improve the thermal properties of the polybenzoxazine.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Maja D. Valcic, Suzana M. Cakic, Ivan S. Ristic, Jelena D. Cakic, Miroslav J. Cvetinov, Csanadi J. Janos
Summary: A series of nontoxic acrylated waterborne polyurethane/silica hybrid composites were synthesized with controlled crosslink density and different amounts of nanosilica, resulting in improved thermal stability and mechanical properties of the hybrid composite materials.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Biochemistry & Molecular Biology
Brandon B. Risley, Xiaochu Ding, Ying Chen, Paula G. Miller, Yadong Wang
Summary: PGS requires harsh thermal crosslinking conditions, while the addition of citric acid can enhance the mechanical properties by forming PGSC. It is found that low citrate content and short curing time can produce PGSC with good cytocompatibility, making it a potential candidate for biomedical applications.
MACROMOLECULAR BIOSCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Iratxe Zarandona, Nguyen Cong Minh, Trang Si Trung, Koro de la Caba, Pedro Guerrero
Summary: Thermocompression was used to prepare citric acid-crosslinked chitosan films with Aloe vera as the bioactive compound. The addition of up to 10% Aloe vera did not change the mechanical properties of the films, but a decrease was observed with 15% Aloe vera, indicating hindered intermolecular interactions. Maillard reaction occurred between chitosan and citric acid, while physical interactions took place with Aloe vera, affecting the properties of the films.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Adrian Krzysztof Antosik, Karolina Mozelewska
Summary: This study focused on the research of self-adhesive tapes based on silicone pressure-sensitive adhesives, and conducted various tests on the prepared tapes. The results showed that the new self-adhesive materials maintained their adhesive properties while increasing the thermal resistance, indicating their potential applications in electrical engineering and heavy industry.
Article
Materials Science, Multidisciplinary
Yue Tang, Henry E. Symons, Pierangelo Gobbo, Jeroen Sebastiaan Van Duijneveldt, Ian Hamerton, Sebastien Rochat
Summary: A benzoxazine system combining liquid cardanol-based benzoxazine and an effective initiator with bisphenol A-based benzoxazine has been proposed. The mixture shows excellent fluidity and a relatively low peak polymerization temperature, and the cured polybenzoxazine exhibits high thermal decomposition temperature, moderate glass transition temperature, and robust mechanical strength comparable to the homopolymer obtained from curing bisphenol A-based benzoxazine.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Nicolas Lebert, Nicolas Gay, Emmanuel Richaud
Summary: Polyphenylsulfone undergoes crosslinking when thermally aged at temperatures corresponding to its processing, resulting in a strong decrease of ultimate strain and a slight decrease in elastic modulus and yield stress. This degradation mechanism was observed in thin sample films tested at 250 and 280 degrees C. The overall results were discussed based on established structure-properties relationships.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Chemistry, Applied
Lulu Zhu, Xiao Sun, Yan Fan, Yangfan Wang, Xin Qi, Hu Hou
Summary: In this study, the thermal stability of ready-to-eat sea cucumbers (RSC) was enhanced using gallic acid (GA) and chlomgenic acid (CA). The treatment led to an increase in hardness and a decrease in free water content of RSC. Collagen fibers showed increased aggregation and decreased porosity. The resulting improvement in thermal stability was evidenced by higher peak temperatures. This research provides a theoretical basis for prolonging the storage life of RSC.
Article
Food Science & Technology
Junli Dong, Dawei Yu, Zijuan Yu, Liming Zhang, Wenshui Xia
Summary: This study investigated the thermal-induced modification of neat chitosan film at temperatures ranging from 90 to 130 degrees Celsius. Heating resulted in the Maillard reaction, which increased the crosslinking degree of the film. The heat-treated films exhibited a more compact structure and higher tensile strength. Additionally, water solubility, swelling degree, water vapor and oxygen permeability decreased. The optimum process occurred at 110 degrees Celsius, showing an improved antioxidant capacity.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Polymer Science
Xianbo Hou, Yan Li, Xiaoguang Luo, Rubing Zhang
Summary: Novel PI aerogel composites prepared by introducing Silicon carbide whiskers (SiCw) exhibit high compressive performance and enhanced high temperature stability, making them suitable for aerospace applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Guancong Chen, Binjie Jin, Yunpeng Shi, Qian Zhao, Youqing Shen, Tao Xie
Summary: In this study, a dual-phase LCE network was designed and synthesized to achieve mesogen alignment by utilizing a shape memory mechanism in the crystalline phase. The alignment can be erased through melting, enabling repeated reprogramming and offering exceptional versatility in designing 3D printed LCE.
ADVANCED MATERIALS
(2022)
Article
Engineering, Biomedical
Xianpeng Huang, Di Chen, Chengzhen Liang, Kesi Shi, Xiaopeng Zhou, Yuang Zhang, Yi Li, Jiangjie Chen, Kaishun Xia, Jiawei Shu, Biao Yang, Jingkai Wang, Haibin Xu, Chao Yu, Feng Cheng, Shaoke Wang, Yongxiang Zhang, Chenggui Wang, Liwei Ying, Hao Li, Meiling Han, Fangcai Li, Yiqing Tao, Qian Zhao, Qixin Chen
Summary: This study presents a method to transform the swelling of injectable microgels into mechanical stimulation by stretching the cells adhered to their surface. The findings suggest that swelling-induced mechanical stimulation has the potential to regulate stem cell differentiation.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yadong Yu, Zhaoming Liu, Qian Zhao
Summary: A synergistic toughening strategy was reported for the development of mechanical robust and recyclable nanocomposite hydrogels through in-situ inorganic ionic polymerization of calcium phosphate oligomers within polymer composite networks. The resulting hydrogels exhibited high strength and toughness, controllable mechanical anisotropy, and significant energy absorption/dissipation ability. Moreover, the hydrogels could be easily recycled and regenerated, making them suitable for sustainable large-scale production and application.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Di Chen, Chujun Ni, Chen Yang, Ye Li, Xin Wen, Curtis W. Frank, Tao Xie, Hua Ren, Qian Zhao
Summary: A method of direct encryption on a 3D-printed object using orthogonal photochemistry is reported, allowing for coding on nonplanar surfaces. This approach provides a more reliable encryption method and has the potential to extend to functional modification of 3D-printed products.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaona Xu, Zizheng Fang, Binjie Jin, Hongfeng Mu, Yunpeng Shi, Yang Xu, Guancong Chen, Qian Zhao, Ning Zheng, Tao Xie
Summary: A living polymer network with complex geometries, exceptional adaptability, and continuous growing and regenerating characteristics has been reported. The polymer can be digitally printed into arbitrary 3D shapes and undergoes growth via living polymerization of a monomer. This growth leads to macroscopic dimensional growth and transforms the printed amorphous network into a crystallizable network, resulting in geometric adaptability via a shape-memory mechanism.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhuo Sun, Qian Zhao, Sainan Ma, Jingjun Wu
Summary: In this study, a post-programming method was developed to control and manufacture hierarchical pores in 3D printed hydrogels. By utilizing 3D printing and lyophilization, hydrogel lattices with tunable porosities and mechanical properties were created, which were further used for efficient solar vapor generation.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Wenjun Peng, Jie Yin, Xianming Zhang, Yunpeng Shi, Gang Che, Qian Zhao, Jian Liu
Summary: Biofragmentable anastomosis ring (BAR) is a sutureless alternative for intestinal connection in colonic surgery. In this study, a shape memory anastomosis ring was 4D printed using fused deposition modeling (FDM) 3D printing. The ring can recover its shape from a compressed form for easier insertion to a permanent shape for connection and support. The degradation kinetics can be controlled by adjusting the composition of the printing materials, allowing the device to be excreted after the intestine heals. The 4D printing strategy has the potential to advance intestinal anastomosis and enable minimally invasive surgery.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
Mengru Zhang, Jinqi Song, Youlong Hua, Shiwei Wu, Qian Zhao, Jian Chen
Summary: A bifunctional acoustic metamaterial for beam switching between the focusing beam and bottle beam is demonstrated, which consists of a groove structure for binary phases and a partitioned piezoelectric transducer (p-PZT) for incident wavefront modulation. The effectiveness of this bifunctional acoustic metamaterial is verified through theoretical calculation, numerical simulation, and experimental measurement. The focal plane of both the focusing beam and bottle beam can be linearly tuned by the operating frequency. Potential applications include medical ultrasonic therapy, sound printing, and biological particle manipulation.
APPLIED PHYSICS LETTERS
(2023)
Article
Polymer Science
Jie-Wei Wong, Xuxu Yang, Qian Zhao, Yaoting Xue, Tow-Jie Lok, Li Wang, Xiulin Fan, Xuezhang Xiao, Tuck-Whye Wong, Tiefeng Li, Lixin Chen, Ahmad Fauzi Ismail
Summary: A sustainable approach to synthesizing a shape-memory polymer using biomass-derivable precursors via catalyst-free polyesterification is presented, resulting in a biodegradable polymer with excellent shape-memory properties. The mild polymerization process enables the reconfiguration of the partially cured film to a three-dimensional geometric form. This study is a step forward in developing sustainable shape-memory polymers and a simple method for constructing 3D structures with a permanent shape.
Article
Materials Science, Biomaterials
Wenhao Wang, Ao Wang, Gaofu Hu, Mengyao Bian, Lili Chen, Qian Zhao, Weilian Sun, Yanmin Wu
Summary: In this study, a porous hydrogel scaffold based on chitosan and oxidized chondroitin sulfate was fabricated using freeze-casting technique to induce periodontal tissue regeneration. The biocompatibility of the scaffold with periodontal ligament stem cells (PDLSCs) or gingival-derived mesenchymal stem cells (GMSCs) was confirmed in vitro. In vivo experiments showed that the PDLSC and GMSC hydrogel groups had better bone tissue repair than the control group. Immunohistochemistry staining demonstrated higher expressions of OPN, Runx-2, and COL-I in the hydrogel groups. Masson's trichrome analysis revealed that the aligned porous hydrogel induced more orderly periodontal ligament formation. These findings suggest that the aligned porous hydrogel scaffold combined with PDLSCs and GMSCs could be a potential strategy for promoting periodontal tissue regeneration.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Guancong Chen, Haijun Feng, Xiaorui Zhou, Feng Gao, Kai Zhou, Youju Huang, Binjie Jin, Tao Xie, Qian Zhao
Summary: Tuning actuation temperatures of liquid crystalline elastomers can help control actuation behavior, and the development of an elastomer with varying actuation temperature has been achieved in this study.
NATURE COMMUNICATIONS
(2023)
Article
Polymer Science
Wenjun Peng, Hongfeng Mu, Xin Liang, Xianming Zhang, Qian Zhao, Tao Xie
Summary: Shape memory polymers (SMPs) are a type of smart material that can respond to various stimuli. This study proposes a new method of digital laser direct writing to induce thermal relaxation of internal stress in SMPs, allowing for visualization and release of the stress, and enabling three-dimensional shape transformation. This approach shows great potential for a wide range of applications.
Article
Nanoscience & Nanotechnology
Yongqi Liu, Biru Yang, Chuhan Song, Qian Zhao, Tao Xie, Zizheng Fang, Jingjun Wu
Summary: The combination of 3D printing and shape memory polymers enables programmable shape morphing of complex structures. Adjusting the molecular design and thermodynamic properties of different polymer components allows for a greater range of shape and functional variations.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Bo Yang, Wusha Miao, Haijun Feng, Qian Zhao, Tao Xie, Ning Zheng
Summary: Typical dynamic covalent polymer networks can achieve self-healing, reprocessing, and shape reconfigurability, while topology isomerizable networks enable programmable physical properties. Combining these two transformation mechanisms into one network is challenging but can greatly enhance material versatility. In this study, researchers successfully regulated the bond exchange kinetics in a dynamic covalent network using an on-demand catalyst. The network demonstrated thermal healing, reprocessing, and shape reconfiguration without changing the polymer properties, and upon UV activation, significant network isomerization occurred. Further control of the switchable catalyst allowed selective programming of both the shapes and properties, offering potential benefits for flexible electronics and soft robotics.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
