Materials
·
2023
·Vol. 16
·期 4
·1604
·
IF 3.4
Yue Jiang,Shuai Wang,Weifu Dong,Tatsuo Kaneko,Mingqing Chen,Dongjian Shi
Carbon fiber (CF) is widely used in the preparation of carbon-fiber-reinforced polymer composites (CFRP) in which it is combined with epoxy resin due to its good mechanical properties. Thermosetting bisphenol A epoxy resin, as one of the most common polymer materials, is a non-renewable resource, leading to a heavy environmental burden and resource waste. To solve the above problems and achieve high mechanical and thermal properties comparable to those of bisphenol A, herein, a high-performance, degradable and recyclable bio-based epoxy resin was developed by reacting the lignin derivative vanillin with 4-amino cyclohexanol via Schiff base. This bio-based epoxy resin showed a Young’s modulus of 2.68 GPa and tensile strength of 44 MPa, 36.8% and 15.8% higher than those of bisphenol A epoxy, respectively. Based on the reversible exchange reaction of the imine bond, the resin exhibited good degradation in an acidic environment and was recoverable by heat treatment. Moreover, the prepared epoxy resin could be used to prepare carbon fiber (CF)-reinforced composites. By washing off the epoxy resin, the carbon fiber could be completely recycled. The recovered carbon fiber was well preserved and could be used again for the preparation of composite materials to realize the complete recovery and utilization of carbon fiber. This study opens a way for the preparation of high-performance epoxy resin and the effective recycling of carbon fiber.Keywords:epoxy resin;degradable;recycled;bio-based
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jiuyun Cui,Zhiping Zhou,Atian Xie,Siwei Liu,Qianqian Wang,Yilin Wu,Yongsheng Yan,Chunxiang Li
Lithium resources are attractive for different applications because of their specific properties. Therefore, it is more significant to find a cost-effective and environment-friendly method to selective adsorption and recovery of Li + . In this work, a renewable and easy degradable CA/CS hybrid membrane was modified with polydopamine as adhesion layer to anchored TiO 2 . The simple imprinting process could be realized by hydrolysis polymerization. The adsorption process followed Langmuir isotherm model and pseudo-second-order kinetic equation were researched in detail. The results displayed the maximum adsorption capacity is 20.08 mg g −1 for Li + . The selectivity factors of Li + to Na + , K + , Mg 2+ and Ca 2+ are 1.78, 2.43, 2.60 and 3.61, respectively, which mainly attributed to imprinting effect. The LIICMs also exhibited the superior reusability and durability. Thus, the LIICMs provide a powerful tool for selective separation and recovery of Li + from mixed solutions.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Bio
·
2023
·
IF 8.2
Linjun Zou,Yong Hou,Jiawen Zhang,Meiying Chen,Peiying Wu,Changcun Feng,Qinglong Li,Xudong Xu,Zhaocui Sun,Guoxu Ma
Postoperative peritoneal adhesion (PPA) is frequent and extremely dangerous complication after surgery. Different tactics have been developed to reduce it. However, creating a postoperative adhesion method that is multifunctional, biodegradable, biocompatible, low-toxic but highly effective, and therapeutically applicable is still a challenge. Herein, we have prepared a degradable spray glycyrrhetinic acid hydrogel (GAG) based on natural glycyrrhetinic acid (GA) by straightforward heating and cooling without the use of any additional chemical cross-linking agents to prevent postoperative adhesion. The resultant hydrogel was demonstrated to possess various superior anti-inflammatory activity, and multiple functions, such as excellent degradability and biocompatibility. Specifically, spraying characteristic and excellent antibacterial activities essentially eliminated secondary infections during the administration of drugs in surgical wounds. In the rat models, the carrier-free spray GAG could not only slow-release GA to inhibit inflammatory response, but also serve as physical anti-adhesion barrier to reduce collagen deposition and fibrosis. The sprayed GAG would shed a new light on the prevention of postoperative adhesion and broaden the application of the hydrogels based on natural products in biomedical fields.
研究领域:
生物医学工程
·
药剂学
·
材料科学
·
外科手术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hongrui Liang,Yifen Xu,Jing Song,Yongxi Cui,Yubo Chen,Yu Cao,Qinglong An,Lixian Yin,Tongan Bu,Zhi Wang
Developing degradable and recyclable thermosetting polyurethanes represents a significant step toward environmental protection and resource conservation. However, achieving these properties often compromises mechanical performance and thermal stability. To address this challenge, we developed a high-performance degradable and recyclable thermosetting polyurethane (IP-AD-BA1) by integrating dynamic cross-linkers with abundant hydrogen bonding. First, a polyurethane prepolymer was synthesized using adipic dihydrazide (AD), a chain extender enriched with hydrogen bond donors and acceptors, to generate abundant hydrogen bonding within the polyurethane structure. This prepolymer was then cross-linked to form IP-AD-BA1 using boric acid as the dynamic cross-linker. Comparisons with other polyurethanes of the same type reveal that IP-AD-BA1 exhibits excellent comprehensive performance. This includes outstanding mechanical properties (tensile strength of 51.1 MPa and toughness of 152.1 MJ m −3 ), as well as thermal stability (5% weight loss temperature of 322.5 °C). Moreover, IP-AD-BA1 offers rapid recyclability under mild conditions (110 °C, 15 MPa) while maintaining its mechanical and thermal properties after recycling. It can also be degraded in ethanol, enabling recovery as a linear polyurethane oligomer. Finally, we utilized IP-AD-BA1 to fabricate recyclable foam sensors capable of effectively detecting strain and stress, thereby broadening the potential applications of thermosetting polyurethanes.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 7
·6451
·
IF 5.6
Yanning Wang,Boyou Hou,Liping Huang,Bingjian Li,Shi Liu,Mingyang He,Qun Chen,Jinchun Li
At present, the development and usage of degradable plastics instead of traditional plastics is an effective way to solve the pollution of marine microplastics. Poly (butylene adipate-co-terephthalate) (PBAT) is known as one of the most promising biodegradable materials. Nevertheless, the degradation rate of PBAT in water environment is slow. In this work, we successfully prepared four kinds of high molecular weight polyester copolyesters (PBATGA) via quaternary copolymerization. The results showed that the intrinsic viscosity of PBATGA copolymers ranged from 0.74 to 1.01 dL/g with a glycolic acid content of 0–40%. PBATGA copolymers had excellent flexibility and thermal stability. The tensile strength was 5~40 MPa, the elongation at break was greater than 460%, especially the elongation at break of PBATGA10 at 1235%, and the thermal decomposition temperature of PBATGA copolyesters was higher than 375 °C. It was found that PBATGA copolyester had a faster hydrolysis rate than PBAT, and the weight loss of PBATGA copolymers showed a tendency of pH = 12 > Lipase ≈ pH = 7 > pH = 2. The quaternary polymerization of PBAT will have the advantage of achieving industrialization, unlike the previous polymerization process. In addition, the polymerization of PBATGA copolyesters not only utilizes the by-products of the coal chemical industry, but also it can be promising in the production of biodegradable packaging to reduce marine plastic pollution.Keywords:methyl glycoacetate;glycolic acid;biodegradable;hydrolysis
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 307
·期 10
·2200241
·
IF 4.402
Yang Wang,Rong Li,Ying Liu,Yingxiang Huang,Jianxun Zhang,Xuehong Ren
Strong blood adhesion to dressing may cause secondary damage to the wounds during the wound dressing replacement process. Thus, blood repellent dressings have significant potential applications in wound treatment. Herein, a hydrophobic, degradable, and antibacterial dressing is reported to reduce the blood adhesion and prevent infection around the wounds. The dressing is prepared by cross-linked non-woven zein nanofibers with quaternized titanium dioxide (TiO 2 ) nanoparticles coating. The dual hydrophobic structures supported by zein nanofibers and the quaternized TiO 2 nanoparticles coating provide outstanding water/blood repellency for the dressing, and efficiently prevent blood leakage. Meanwhile, the dressing also possesses appropriate moisture permeability (2194 ± 143 mL m −2 per day). In addition, the quaternized TiO 2 nanoparticles coating provides excellent bactericidal activity against Gram-negative Escherichia coli O157:H7 and Gram-positive Staphylococcus aureus , especially under visible Xe lamp illumination. Evaluations of hemolysis and cytocompatibility confirm that the fabricated mat is biocompatible and non-toxic to the cells. Considering the excellent degradable features, the dressing may become a promising environmentally friendly biomedical material.
研究领域:
生物材料学
·
医学工程
·
创伤治疗
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2023
·Vol. 34
·期 8
·2463-2470
·
IF 3.4
Dongxiang Chen,Yang Luo,Yan Song,Wencai Wang,Guo Liang Li
The development of a single polymer chain with the dual functions of self-healing and degradation is challenging. Herein, we report the synthesis of self-healing and degradable polymers (SDP) via the integration of hierarchical hydrogen bonding groups and degradable polycaprolactone (PCL) segments. The dynamic reconstruction of hierarchical hydrogen bonding endowed the as-prepared polymers with excellent self-healing properties. The degradation properties were regulated via the proportion of PCL in the soft segments. The incorporation of PCL segments resulted in better degradability and improved the tensile strength of the polymer from 9.2 to 28.3 MPa. The as-prepared polymers could recover their mechanical properties after self-healing. The temperature-dependent Fourier-transform infrared spectra (FT-IR) indicated that the hierarchical hydrogen bonding was capable of dissociation and re-association with a variation in the temperature. The as-synthesized sustainable polymers, which exhibit self-healing properties and degradability, are expected to be useful in future energy and environmental applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xiaotao Liu,Xueting Hua,Jian Lu,Jun Wu,Yuexia Feng
Information regarding adsorption–desorption of pollutants on degradable microplastics in marine environments is limited. Biodegradable microplastics including polylactic acid (PLA), polyhydroxyalkanoate (PHA), and polybutylene adipate (PBAT) as well as non-biodegradable microplastic controls including polypropylene (PP) and polyethylene (PE), were selected to investigate the adsorption and desorption behaviors of phenanthrene on biodegradable microplastics in seawater. The results showed that PP (5.3%) and PE (5.5%) had relatively high adsorption and desorption capacity for phenanthrene, while PBAT had similar phenanthrene adsorption but lower desorption capacity (desorption rate 3.8%). PLA had the lowest adsorption capacity (118 μg g−1), while PHA had the lowest desorption rate (3.1%) for phenanthrene. Adsorption of phenanthrene by PLA was sensitive to the salinity, while that of PBAT, PP and PE was not affected by the salinity. The high adsorption and weak desorption of phenanthrene on PBAT were mainly affected by π–π interactions and the low crystallinity of PBAT, while those on PLA and PHA were mainly affected by hydrophilicity. The replacement of non-degradable plastics by degradable plastics could modify the adsorption–desorption behaviors of phenanthrene in marine environments. These findings provide new insights into the environmental friendliness of degradable plastics in marine environments.
研究领域:
环境科学
·
海洋学
·
污染生态学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 12
·7241-7250
·
IF 3.119
Tingting Tu,Bo Liang,Qingpeng Cao,Lu Fang,Qin Zhu,Yu Cai,Xuesong Ye
With the growing number of patients suffering from noninfectious chronic diseases, the consumption of point of care testing strips increases exponentially, particularly blood glucose testing strips, causing an increasingly severe conflict between strip recycling and the environment. In this paper, fully transient electrochemical strips are developed as a substitute for non-degradable strips. Proper explorations were made, including finding out suitable degradable substrates for strip-making among different degradable materials and optimization of degradable conducting paste. Taking advantage of dissolvable polymer-based materials and nontoxic carbon materials, the transient strips have validated electrochemical functionality to determine physiological levels of glucose with a sensitivity of 14.33 μA mM−1 cm−2 (correlation coefficient R2 is 0.99498) and reached full-degradation within a week after disposal. The interference experiment (negligible interference current response under 7%) and recovery tests (recovery ratio ranging from 92.46% to 102.47%) have illustrated its practical application in real sample detection. Such degradable-characterized testing strips can be widely used in chronic disease management with daily eco-friendly point of care testing, without potential pollution to the environment.
研究领域:
生物医学工程
·
环境科学
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2023
·Vol. 15
·期 8
·1906
·
IF 5
Xinxin Liu,Dengbang Jiang,Yuyue Qin,Zhihong Zhang,Mingwei Yuan
With the increasing environmental pollution caused by disposable masks, it is crucial to develop new degradable filtration materials for medical masks. ZnO-PLLA/PLLA (L-lactide) copolymers prepared from nano ZnO and L-lactide were used to prepare fiber films for air filtration by electrospinning technology. Structural characterization of ZnO-PLLA by H-NMR, XPS, and XRD demonstrated that ZnO was successfully grafted onto PLLA. An L9(43) standard orthogonal array was employed to evaluate the effects of the ZnO-PLLA concentration, ZnO-PLLA/PLLA content, DCM(dichloromethane) to DMF(N,N-dimethylformamide) ratio, and spinning time on the air filtration capacity of ZnO-PLLA/PLLA nanofiber films. It is noteworthy that the introduction of ZnO is important for the enhancement of the quality factor (QF). The optimal group obtained was sample No. 7, where the QF was 0.1403 Pa−1, the particle filtration efficiency (PFE) was 98.3%, the bacteria filtration efficiency (BFE) was 98.42%, and the airflow resistance (Δp) was 29.2 Pa. Therefore, the as-prepared ZnO-PLLA/PLLA film has potential for the development of degradable masks.
研究领域:
材料科学
·
环境科学
·
医学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Juanjuan Wang,Qiangqiang Yan,Yinzhong Guo,Lucy Bai,Tom Kalantar,Amy Song,Wayne Zhang,Yingfeng Yu
With increasingly strict requirements for environmental protection, degradable adhesives are urgently required to enable recycling challenge. In this paper, an aromatic chain extender, Fmoc-BHA, which can undergo 1,4-elimination under alkaline conditions, and polyurethane adhesives, which readily decompose after deprotection, are synthesized. The molecular weight of the degradable polyurethane decreased from 6.5 × 104 to 1.1 × 104 g/mol after alkaline treatment. The process and mechanism of degradation was studied by nuclear magnetic resonance, Fourier transform infrared, and gel permeation chromatography. The evolution of bond shear strength under different alkaline conditions was tested; the results showed the practicality of using a degradable polyurethane laminating adhesive to enable film detachment.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Linhan Mao,Hong Chen,Yue Lian,Yan Cao,Xilin Wang,Zhaoxia Chen,Yuhong Zhang
The rapid expansion of the petroleum industry has led to a surge in oil spill incidents, the development of novel superhydrophobic absorbents for the efficient removal of oil spills has become increasingly imperative. In this study, a novel starch-based superhydrophobic composite absorbent was fabricated through a two-step process. Initially, potato starch was gelatinized and then freeze-dried to form a porous starch cryogel (SC). Subsequently, the SC was impregnated with carnauba wax (CW)/polydimethylsiloxane (PDMS) composite solution. After curing, the P-CW@SC with exceptional superhydrophobicity (contact angle = 154.0°) and superoleophilicity was developed. Furthermore, P-CW@SC exhibited excellent self-cleaning properties, anti-fouling efficacy, mechanical strength and chemical stability. Owing to its well-developed porosity, P-CW@SC demonstrated good oil absorption capacities (4.79–13.05 g/g). The selective hydrophobicity and lipophilicity of P-CW@SC enabled effective remediation of underwater oil spills and it could achieve oil-water separation efficiencies exceeding 95.59 % under dynamic conditions after 10 cycles. Upon 50 d of degradation testing in buffer solution, the weight loss rate of P-CW@SC weight reached 43.5 %. Considering its cost-effective raw material composition and simple preparation process, P-CW@SC holds significant potential application in the treatment of oily wastewater and oil spill remediation.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）