JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Lei Nie,Xiaoyue Ding,Han Zhang,Xinran Li,Man Li,Peng Ding,Oseweuba Valentine Okoro,Daria Podstawczyk,Yanfang Sun,Guohua Jiang,Amin Shavandi
Hydrogel have been widely used to promote skin tissue regeneration and accelerate wound healing. The development of injectable hydrogels with multi-functional integration is a priority, especially with antibacterial properties and cytocompatibility. Here, we reported a simple, and versatile method to fabricate a functional hydrogel with potential for wound dressing applications. The dopamine-grafted gelatin (GT-DA) and oxidized dextran (oxyglucan, ODex) were synthesized, and dipotassium glycyrrhizinate (DG) was in situ incorporated to fabricate the composite hydrogels (GDO) through the Schiff base reaction. SEM images revealed that hydrogel has a porous structure. By increasing the ratio of GT-DA to ODex from 1 to 4, the storage modulus (G') and hydrogel network stability nearly doubled, reaching 900 Pa and 220% strain, respectively. The enhancement in mechanical properties could be attributed to the higher cross-linking density resulting from increased Schiff base bonds in the GDO hydrogels. Furthermore, the GDO hydrogel exhibited antioxidant activity and antibacterial effects on Escherichia coli and Staphylococcus aureus . Moreover, the hydrogel demonstrated cytocompatibility after culturing with human umbilical vein endothelial cells (HUVECs). The results proved that the fabricated GDO hydrogels have the potential to be used as wound dressings.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 32
·e55747
·
IF 2.7
Yuhang Wang,Mingyang Liu,Zhengsheng Hu,Hanlin Lv,Yanjun Chen,Yifeng Wang
As an efficient means of material carrying, multilayer capsules are widely used in medicine, agriculture, food safety and other fields. Here, we report a kind of temperature-triggered multilayer capsule with chitosan-sodium dodecyl benzene sulfonate (CS-SDBS) as the shell and gelatin bead containing α-cyclodextrin (α-CD@gelatin) as the core. The α-CD@gelatin/CS-SDBS multilayer capsules can simultaneously encapsulate various substances, such as drugs, fluorescent materials, and nanoparticles. The encapsulated substances do not interfere with each other because they are located in different layers. Both the temperature-sensitive property of gelatin and the host-guest interaction between α-CD and SDBS are utilized to achieve temperature-controlled release of substances in the multilayer capsules. The release rate can be adjusted by the α-CD amount in the gelatin beads. The controlled drug release and chemical detection of the multilayer capsules are studied with sodium salicylate, iodine, and purple cabbage pigment as the carriers. The results show that the α-CD@gelatin/CS-SDBS multilayer capsules have excellent capabilities of encapsulation and controlled release, which are beneficial for their application in the fields of substance encapsulation, drug-controlled release, and chemical detection.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Hao Wu,Dengwang Lai,Mengyao Nan,Wuyan Cao,Li Liu,Yuejun Liu,Jun Yang
This paper utilizes the reaction of phytic acid (PA) and urea (UM) in polyvinyl alcohol (PVA) solution to synthesize flame retardant gasses (CO 2 , NH 3 ) for the preparation of PVA composite films containing flame retardant microbubbles. The flame retardancy of PVA composite films was assessed using methods including limiting oxygen index (LOI), vertical burning (UL 94), and cone calorimetry. The results indicated an increase in the LOI of the PVA composite film containing flame retardant microfoam from 20% to 30% compared with the pure PVA film, and that UL 94 reached VTM-0. Furthermore, its peak exothermic rate and total exothermic amount were reduced by 36.25% and 38.92%, respectively, compared with the pure PVA film. The investigation of the flame-retardant mechanism employed thermogravimetric-infrared (TG-IR), scanning electron microscopy (SEM), Raman spectroscopy, and infrared spectroscopy. The results demonstrate that the CO 2 and NH 3 flame retardant microbubbles within the composite film render it less ignitable at the initial stage, and that the internal UM of the composite film continues to decompose, releasing CO 2 and NH 3 upon heating. In addition, the acidic substances decomposed by PA during combustion promote the dehydration, cross-linking, and cyclization of PVA, generating chemical structures such as P O C, P O P, and PO 4 with enhanced thermal stability. This encourages the formation of a continuous, dense charcoal layer and impedes the transfer of oxygen and heat into the interior.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Lian-lian Duan,Xiao-xia Xu,Fu-ya Liu,Jie Wu,Hong-qiang Qu,Jian-zhong Xu,Hai-yun Ma,Yun-hong Jiao
The current basic requirement for additive flame retardants is to improve flame retardancy while minimizing damage to the mechanical properties of the matrix. Many studies have reported that fibrous flame retardants not only improve flame retardancy but also enhance the performance of the flame-retardant polymer matrix. Therefore, a fibrous tin-based metal–organic framework material (SnBDC) in this study was prepared in an aqueous solution and studied as a flame retardant in poly(vinyl chloride) (PVC) matrix through the following methods: the limiting oxygen index (LOI), cone calorimetry, universal tensile testing machine, a thermogravimetric analyzer coupled with a mass spectrometer, scanning electron microscopy and X-ray diffractometer, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Compared with PVC, the LOI value and tensile strength of the flame-retardant PVC sample treated with 2 phr SnBDC (PVC/2) were increased by 3 units and 34%, respectively; the peak heat release rate, peak smoke production rate, and total smoke production of PVC/2 were reduced by 44%, 66%, and 45%, respectively. SnBDC mainly accelerates the dechlorination of PVC in the first stage, promotes the cross-linking of PVC dechlorination products into char, and inhibits especially the release of aromatic compounds.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Fansen Meng,Yiyin Yang,Kaiwen Shen,Donglin Tang
In this study, flame retarded polyurethane vitrimers, namely vitrimeric poly(isocyanurate urethane)s (VPICUs), were synthesized successfully by melting polycondensation simply from tris(2-hydroxyethyl)isocyanurate and dicarbamates. By increasing the methylene number in dicarbamates from 4 to 10, the VPICUs exhibit superior mechanical performance with elongation at break increases from 20% to 350% while the tensile strength decreases from 80 to 32 MPa, and the toughness can be significantly enhanced from 9 to 90 J/cm 3 . With a mass fraction of isocyanurate ring at 26.6%, for VPICU10-2.5/2, the flame retardancy is found to be the most excellent, with a UL-94 rating at V-0 and a LOI value at 25.9%. VPICU10 samples exhibit substantial relaxation behavior at higher temperature, and the network rearrangement activated by transesterification and transurethanization reactions offers the reprocessability without losing the properties. This work provides new insights into the construction of sustainable and high-performance flame retarded polymer materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Dong liang Wang,Lebin Zhan,Zhihong Zheng,Jingyun Zhang,Songwei Yang,Fubin Luo,Ting Hu
The accelerated evolution of electronic devices has resulted in an increased demand for thermal management materials. In this study, methoxy polyethylene glycol (MPEG) was introduced into a covalent adaptable epoxy network. It is demonstrated that the epoxy material becomes softer as the amount of MPEG content is increased, specifically exhibiting excellent flexibility with an impressive elongation at break of 444.68%. The thermal conductivity of the epoxy resin was enhanced by the incorporation of boron nitride (BN) filler, and the findings demonstrated that the thermal conductivity of the composites was markedly elevated to 3.34 Wm −1 K −1 when the proportion of BN filler reached 50%. The potential use of such composites as thermal management materials is demonstrated in their application for heat dissipation in LED chips. In addition, the covalent adaptive network enables the decomposition of the composites prepared in this study under chemical conditions, with the fillers subsequently being separated by physical filtration. This approach offers a potential pathway toward the sustainable development of thermal management materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Lide Yang,Jiacheng Liang,Zheng Liu,Jianmin Yuan,Guowen He
The exploitation, transportation, and utilization of various oil products frequently generate substantial volumes of oily wastewater, making the development of efficient treatment methods imperative for addressing environmental pollution and water scarcity. In this study, sodium hypochlorite was first employed to oxidize and etch the surface of the nylon mesh separation membrane (NFM), resulting in a modified NFM (M-NFM) characterized by a unique honeycomb-like porous structure and an abundance of oxygen-containing functional groups. Subsequently, a hydrophilic and positively charged UiO-66-NH 2 particle layer is in situ synthesized on the NFM surface, capitalizing on the abundant nucleation sites offered by carboxyl groups within the honeycomb framework, yielding the composite membrane of M-NFM/UiO-66-NH 2 (M-NFMU). To further enhance the oil–water separation performance of this composite membrane, surface-functionalized cellulose nanocrystals (SF-CNC) and graphene oxide (GO) were sequentially adsorbed onto the surface of the M-NFMU membrane through a synergetic self-assembly strategy. This process led to the formation of a hierarchical micro-nano structure on the surface of the NFM, ultimately producing a composite membrane designated as M-NFM@UiO-66-NH 2 /SF-CNC/GO (M-NFMUCG). During the oil–water separation process, water molecules engage in hydrogen-bonding interactions with the amine, carboxyl, and hydroxyl functional groups present in the UiO-66-NH 2 , SF-CNC, and GO structures. This interaction effectively captures and stabilizes a water film on the surface of the M-NFMUCG membrane, preventing oil from coming into contact with it. As a result, the M-NFMUCG exhibits remarkable superhydrophilicity, exceptional oil resistance, and outstanding oil–water separation performance, achieving a permeate flux of up to 16,361 L m 2 h −1 and an oil rejection rate exceeding 99.9% under gravity. Moreover, the M-NFMUCG membranes exhibit excellent chemical stability and remarkable salt resistance, underscoring their significant potential for the treatment of oily wastewater.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 15
·e55222
·
IF 2.7
Haihua Wang,Yun Han,Xuan Liu,Liyu Sun,Huizhu Niu,Yifan Du,Jie Wang
In lithium-ion batteries (LIBs), separator is used to provide a barrier between the anode and cathode and provide freedom for the transport of lithium-ions, which serves a key function in inhibiting internal short circuit and improving the battery safety. The limited wettability of commercial polyolefin separators in electrolytes restricts its utilization in extreme environmental conditions. In our work, we choose polypropylene (PP) as the precursor and can address the issue of poor wettability through suitable modification methods. Tannic acid (TA) and diethylenetriamine (DETA) were utilized to coat PP separator via hierarchical self-assembly approach, and the coating is further stabilized by taking advantage of the specific oxidizing properties of sodium periodate. This method scarcely increases the separator thickness or sacrifices the microporous structure of the original separator. The improved separator not only exhibits outstanding wetting capability and relatively high ion conductivity (1.24 mS cm −1 ), but also has the highest lithium-ion migration number of 0.74. This indicates that when the modified separator is applied to LIBs, its electrochemical performance is significantly enhanced. The enhancement in electrochemical performance of LIBs is attributed to the strong absorption and retention ability of the coating on the separator. The reversible capacity of Li/PP-TD2 separator/LiFePO 4 battery is 144.3 mAh g −1 at 2C, which is higher than that of PP separator (117.1 mAh g −1 ) under the same current density. Even after 200 cycles, the PP-TD2 separator with two-layer assembly modification still maintains a higher coulombic efficiency of 97.55% and a discharge capacity of 96.6%. This hierarchical self-assembly modification of PP provides an effective approach for fabricating high-performance separator.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Naipin Chen,Jiaqi Liu,Lingqi Deng,Fang Wang
Microcapsule-based self-healing systems, capable of remediating epoxy resin fatigue microcracks, present promising prospects for prolonging their service life. However, there is a pressing need to improve the mechanical properties, especially toughness, of the composite resin. Herein, a dual-compartment microcapsule was proposed to ingeniously integrate into the epoxy resin matrix, which could endow the composites with improved toughness and the remarkable capability of self-repair against intrinsic injuries. Preparation methods included the soap-free emulsion polymerization for PSA nanoparticles loaded with the healing agent, alongside the development of PDA nanoparticles encapsulating a catalyst through Pickering emulsion polymerization. Subsequently, a composite microcapsule was assembled via a coupling reaction between PSA and PDA nanoparticles. Self-healing performance indicated that the incorporation of 2 wt% microcapsules could significantly restore the tensile strength of epoxy resin to 68.37%. Remarkably, the long-term anti-corrosion of the epoxy coating with microcapsules was typically improved using electrochemical impedance spectroscopy measurements. The low-frequency impedance logarithm value of the composite coating remained stable at approximately 7.1, whereas the pure epoxy coating has dropped to 4.8. Furthermore, epoxy/microcapsule composite resin exhibited UV aging resistance and commendable storage stability at ambient conditions. This strategy provides epoxy resin with improved toughness, corrosion resistance, anti-UV irradiation, and self-healing performance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jun Deng,Yanhong Song,Shuai Liu
Phakic intraocular lenses (pIOLs) are an increasingly popular treatment for refractive errors, particularly myopia. However, there are limited materials available for pIOLs, and each has its issues such as non-foldability, low refractive index (RI), glistenings, or bioadhesion. In response to existing challenges, a series of poly(styrene-block-isobutylene-block-styrene) (SIBS) block copolymers are evaluated for pIOL application, and methacryloyloxyethyl phosphorylcholine (MPC) is grafted onto SIBS to further improve its anti-adhesive properties in this work. By controlling the styrene content, SIBS exhibits a tunable high RI of 1.521–1.532. Meanwhile, the SIBS materials are foldable and possess a glass transition temperature ( T g ) below −60°C. Furthermore, SIBS has a very low average glistening density below 20 MV/mm 2 . Given the hydrophobic nature of the materials, MPC is grafted onto the surface of SIBS, resulting in a notable decrease in water contact angle, protein adsorption, and relative bacterial adsorption from 102.7° ± 2.3°, 12.13 ± 1.82 μg/cm 2 , and 1.00 ± 0.33 to 78.2° ± 0.2°, 3.16 ± 0.93 μg/cm 2 , and 0.02 ± 0.01, respectively. Cytotoxicity and in vivo subcutaneous implantation experiments demonstrate that both SIBS and its modified counterpart are noncytotoxic and biosafe. Collectively, SIBS-based materials represent a promising option for the next generation of pIOLs.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yaqi Xiao,Zhi Cai,Ying Yi,Yihua Yin,Weiquan Cai,Guanghua He,Jingli Zhang,Wenjin Xu,Yaru Li
Cationic photosensitizers have higher photodynamic antibacterial activity compared with anionic photosensitizers, and with low toxicity and no drug resistance. However, their poor photostability and low utilization rate limit their practical applications. Herein, a new strategy for the construction of a GSH-responsive antibacterial nanogel system is developed via the electrostatic interaction between methylene blue (MB) and sulfonated sodium alginate (HSSA) to self-assemble into nanoparticles followed by sulfhydryl cross-linking in an aqueous solution. The photobleaching of MB can be inhibited due to the self-aggregation-caused quenching (ACQ) effect, but the photodynamic activity can be restored by breaking the disulfide-crosslinking bonds in the nanogel in response to 10 mM GSH. In vitro antibacterial tests prove that the system has antibacterial activity beyond anionic photosensitizers. Antibacterial studies on plants show that the system has targeted antibacterial activity on infected plants and good wettability, retention, and adhesion to plant leaves. Safety evaluation shows that the system has no obvious toxic effect on plants. Therefore, this study provides a new approach to the discovery of novel photodynamic bactericides.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 29
·e55674
·
IF 2.7
Zhepeng Di,Shuangqiao Yang,Shibing Bai
The problem of white pollution caused by waste agricultural mulch film (WAMF) has a long history and has brought great damage to the soil and ecological environment. The recycled WAMF has no processing performance because it is doped with a large amount of cotton straw and soil inorganic particles. In this study, it was reported for the first time that high-quality and efficient recovery of WAMF was carried out by means of solid-state shear milling (S 3 M) technology. After the pretreatment of S 3 M, the recycled WAMF is transformed into an active composite powder with a particle size of microns, which regains certain processing performance. Then we prepared a composite material similar to WPC (wood-plastic composite) by using the composite powder. It was found that under the action of strong three-dimensional shear force, the phase domain size of the composite decreased significantly, and the compatibility of each component improved. The macroscopic performance was that the tensile strength was increased by 65% and the bending strength was increased by 74%, reaching 8.30 and 17 MPa, respectively. The 24-h water absorption of this composite decreased by 13%. More importantly, the thermal stability was not significantly reduced during the milling process. This process does not require sorting, cleaning, or other operations, which can greatly simplify the process flow and improve recovery efficiency. It provides an effective solution to the problem of white pollution caused by WAMF.
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高影响因子
危险品化学品经营许可证（带存储）