JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jinsheng Duan,Yilin Li,Zhaogang Liu,Peijie Jia,Junchang Fan,Yanhong Hu,Feng Guo,Jinxiu Wu
This study investigates the impact of layered double hydroxides (LDHs) intercalated with various ions on the thermal degradation and stability of polyvinyl chloride (PVC). Three types of LDHs—carbonate LDHs (C-LDHs), diphenyl phosphate LDHs (P-LDHs), and sarcosine LDHs (N-LDHs)—were synthesized using co-precipitation and hydrothermal methods. Thermogravimetric analysis (TGA) revealed that C-LDHs significantly enhanced the thermal stability of PVC, increasing the activation energy during early degradation phases by up to 25% compared to pure PVC. N-LDHs also improved stability, particularly at higher temperatures, with activation energy rising by 18% in the later stages. P-LDHs, however, showed the least stabilization effect, with a 10% lower activation energy compared to pure PVC. The degradation process of PVC in the presence of LDHs was analyzed using model-free methods, which revealed the complex multistep nature of PVC degradation. Reaction mechanisms were predicted using the generalized master plot method, identifying distinct stages of thermal degradation. Overall, C-LDHs were found to be the most effective at retarding PVC thermal degradation, suggesting their potential as advanced eco-friendly stabilizers. The use of model-free methods and reaction mechanism analysis offers new insights into the design of more efficient thermal stabilizers for polymers.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jiayi He,Yibin Chen,Jiyuan Wang,Sangrong Chen,Xingzi Lan,Maolin Liu,Xiaojie Chen,Weicheng Ou,Han Wang
In this study, LO (lavender essential oil) and PCL (polycaprolactone)-based nanofibrous membranes were successfully prepared using electrospinning technology. Due to the large specific surface area of the coaxial electrospinning nanofibers, the composite fiber membrane synthesized displays outstanding performance in the loading and release of LO. The study examines three common essential oils: Lavender Flower Oil (LFO), Lavandin Hybrida Oil (LHO), and Lavender Spike Oil (LSO). The results showed that this nanofiber membrane can effectively encapsulate LO, achieve long-term release, and exhibit long-lasting aroma and antibacterial effects. In terms of air filtration performance, the LHO/PCL membrane with an inner DMF (dimethylformamide) concentration of 5% has a significant filtration effect on PM2.5. In addition, in vitro antibacterial experiments show that LO/PCL nanofiber membranes have good antibacterial properties against Escherichia coli and Staphylococcus aureus , especially the LHO/PCL and LSO/PCL membranes. In summary, the LHO/PCL nanofiber membrane with 5% DMF demonstrated high filtration efficiency (quality factors is 0.13 Pa −1 ), sustained aroma retention for over 7 days, and exhibited antimicrobial properties, effectively inhibiting bacterial growth by 99% in testing. Therefore, the LO/PCL nanofiber membrane shows good application potential as an essential oil carrier in air filtration systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhaohuang Zhong,Lang Li,Siwei Yu,Xindong Li,Haike Li,Jianghui Jia,Jiaju Huang,Meng Cai,Wanfu Huang
With the growing complexity of separation systems, the application of thin film composite nanofiltration (TFN) membranes in organic solvent separation faces numerous challenges. To augment its solvent stability, an in-situ constructed dopamine hydrogel doped with UiO-66@CNT was developed as an intermediate layer on a polyetherimide (PEI) ultrafiltration membrane. Subsequent interfacial polymerization on this interlayer led to the formation of a solvent-resistant nanofiltration membrane with a vast covalent bond structure, large specific surface area, and enhanced hydrophilicity. Our findings revealed that when the CNT loading in the UiO-66@CNT composite nanoparticles was 2 wt%, the TFN-U 2 C 2 membrane exhibited a maximum pure water flux of 126.32 L/(m 2 ·h) and a methanol flux of 45.45 L/(m 2 ·h). The rejection rates for Congo red aqueous and methanol solutions were 96.88% and 92.14%, respectively. The membrane also demonstrated commendable anti-fouling properties. Remarkably, even after 48 h of immersion in various organic solvents, the membrane retained its morphology and separation efficiency. Compared to the TFN-U 2 membrane without CNT addition, the enhancement in separation performance was considerably significant. Hence, this membrane has significant potential for application in treatment of wastewater containing organic solvents and is promising in related fields.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yan Qi,Junbiao Peng,Chunsheng Zhang,Danling Wang,Yihu Song,Qiang Zheng
Rubber nanocomposites exhibit strain softening under large-amplitude oscillation shear and large-strain cyclic tension while the softening behaviors are hard to regulate in industry. Herein, an oligomer deep eutectic solvent (DES) synthesized from polyethyleneglycol and tetrabutylammonium bromide is used to mediate the vulcanization and softening behaviors of natural rubber (NR) gums and their nanocomposites. The results show that DES could accelerate NR vulcanization and improve crosslinking density. For the hydrophilic silica nanocomposites, DES could greatly reduce tan δ and weaken weak strain overshoot accompanying Payne and lower percentages damping accompanying Mullins effects. The effects in nanocomposites filled with hydrophilic/hydrophobic silica and carbon black are investigated and compared. The investigation provides a new way for tailoring elasticity and dissipation of vulcanizate nanocomposites filled with hydrophilic silica.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 3
·e56365
·
IF 2.7
Jingbo Wu,Jianghua Lin,Wenhao Xiao,Ruijie Xu,Caihong Lei
Nucleating agents are crucial for modifying semi-crystalline polymers, but the impact of different end-group structures on crystallization behavior remains unclear. This study synthesized succinic dihydrazide nucleating agents with various end groups (methyl, ethyl, and tert -butyl) for PET composite materials. The tert -butyl-terminated nucleating agent showed the best performance, increasing the crystallization peak temperature to 203.8°C, crystallinity to 27.3%, and reducing half-crystallization time to 2.8 min at 220°C. It also enhanced the impact strength to 47.2 kJ·m −2 and flexural modulus to 2623 MPa, while improving Vicat softening temperature and heat distortion temperature by 41 and 8°C, respectively. The results from FTIR and Raman Spectroscopy indicate that the interactions between the end groups of the nucleating agent and the C H bonds in the PET structure, the π–π interactions between the nucleating agent and the PET molecular structure, as well as the modulation of the PET chain conformation by the nucleating agent, are the primary factors contributing to the enhanced crystallinity of PET. This study provides a new approach for designing efficient nucleating agents for high-performance materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yue Cao,Yanchen Wang,Xin Zhang,Bo Ren,Bo Wang,Xiaodong Yang
Due to the heterogeneity of the tumor, it is difficult to achieve complete ablation of the tumor by single photothermal treatment. Moreover, their broader use is constrained by the intrinsic high uptake in the reticuloendothelial system (RES) organs, resulting in slow elimination from the body and potential toxicity. In this study, we report a single-step synthetic approach to fabricate versatile FeCP-NPs, leveraging the coordination bonds formed between bioactive polyphenolic compounds (curcumin), Fe III ions, and polyvinyl pyrrolidone (PVP). The FeCP-NPs possess the following favorable characteristics: (1) The components of FeCP-NPs originate from natural products, an endogenous element, and an FDA-approved polymer, guaranteeing good biosafety. (2) FeCP-NPs exhibit excellent photothermal properties. (3) After the photothermal treatment is completed, the dynamic disassembly strategy triggered by deferoxamine mesylate (DFO) can induce the dissociation of nanoparticles and achieve rapid clearance in vivo. (4) Curcumin released during the disassembly of FeCP-NPs can be combined with photothermal therapy to achieve complete tumor ablation. A comprehensive analysis of the safety, biodistribution, and clearance patterns of FeCP-NPs is conducted in vitro or in vivo. This work provides a nanoparticle with great clinical translational potential and provides a new solution for inhibiting tumor growth.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55594
·
IF 2.7
Zhen Zhang,Yue Wang,Shuai Lv,Hailin Cong,Youqing Shen,Bing Yu
In this work, a two-step activated swelling technique was effectively employed to successfully synthesize monodisperse porous poly(styrene-divinylbenzene) (PS-DVB) particles. Diazoresin (DR) transform an ionic bond into a covalent bond by photoreaction. Under ultraviolet irradiation, DR was used to covalently attach dichlorophenyl isocyanate to sulfonated PS-DVB microspheres. The novel photo-crosslinking reaction effectively overcomes the toxicity issues associated with conventional coupling agents and enables green production of chromatographic fillers. Modified PS-DVB particles were indeed commonly used as filler material for the separation of chiral compounds by high performance liquid chromatography (HPLC). The porous modified microspheres designed effectively separate benzoone, DL-mandelic acid, 2-phenylcyclohexanone, ibuprofen, 2-hydroxyl flavone, DL-cysteine, chloraniline maleate, hesperidin, and other chiral compounds by 100 mm column. It is noteworthy that the isocyanate-chitin modified microspheres are effective in separating chiral drugs (1000 μg/mL) within 5 min. Compared with ordinary microspheres, porous isocyanate-chitin modified microspheres showed better separation efficiency under the same conditions. The enhancement is attributed to the increase in their specific surface area. Consequently, they are a better choice of chromatographic packing matrix.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhuolin Zhang,Kangning Wu,Zichao Yang,Haoran Sui,Dongxu An,Chenhui Cui,Fusheng Zhou,Jianying Li
Replacing thermoset insulation by healable and recyclable covalent adaptable networks is a promising approach to the sustainable development of electrical and electronic devices. However, the repair performance gifted by dynamic covalent bonds always conflicts with the excellent mechanical properties gifted by stiff cross-linked networks. In this paper, by introducing dynamic thiocarbamate bonds, polythiourethane (PTU) with excellent mechanical properties and electrical insulation comparable to commercial epoxy resins are successfully developed, which exhibit superior healability and recyclability properties. Sub-centimeter scale electrical breakdown failures of the PTU samples could be efficiently self-healed with a healing efficiency up to 90%, while the storage modulus and volume resistivity exceeded 2 GPa and 10 16 Ω cm, respectively. Even though the electrical breakdown strength inevitably declined after multiple repair processes, PTU samples could restore their initial excellent insulation performance by simply reprocessing with the efficiency above 95%. Moreover, the efficient healability performance of large-sized electrical breakdown failures remained after the reprocessing. These outstanding characteristics underscore the tremendous potential of PTU materials as a new generation of sustainable high voltage insulation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 22
·e55447
·
IF 2.7
Huawei Huang,Yiwen Hu,Xiuduo Song,Jian Kang,Dandan Chen
The development of thin-film nanocomposite (TFN) membranes with high performance is conducive to efficient desalination and wastewater treatment. In this work, dendritic mesoporous silica nanoparticles (DLSiO 2 ) were synthesized by a dual-templating strategy. Afterward, they were introduced into the aqueous phase to fabricate TFN membranes via in situ interfacial polymerization (IP) reaction. Powerful techniques as scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, Nano zetasizer-DLS, x-ray photoelectron microscopy, electrokinetic analyzer, and contact angle were used in the characterization of dendritic structures and nanocomposite membranes. Results revealed that DLSiO 2 with special structural characteristics can effectively regulate the IP process, promoting the enhancement of the crosslinking degree, surface hydrophilicity, and surface negative charge of polyaimde (PA) selective layers. It is also beneficial for constructing extra water channels within the PA selective layer to boost the transport of water molecules. As a consequence, the prepared TFN membrane with 0.3 mg/mL DLSiO 2 exhibits optimal separation performance and good pressure resistance, acid–base resistance, and anti-fouling properties. It also exhibited a water permeability of 4.17 L m −2 h −1 bar −1 (increased by 61.7% compared with thin film composites (TFC) membrane) and a NaCl rejection of 99.0%, which were better than those of TFN membranes prepared by introducing other types of silica in other studies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zeya Li,Mingyu Zhai,Xin Wu,Zeying Chen,Lifen Liang,Xiuli Wang,Laizhou Song
The nanofiltration (NF) membrane has not been extensively competent for rejection of monovalent ions (such as Cl − and NO 3 − ), and the strategy for enhancing monovalent ion rejection and permeation flux still faces a significant challenge. Herein, based on our previous polyethersulfone (PES)-type NF membrane (NF-0), two novel NF membranes were fabricated with additional incorporations of 2,2′-benzidinedisulfonic acid (BDSA) and forward osmotic extraction solution-functioned nanoparticles (MNPs) to remove nitrate from the aqueous solution. The fabricated NF-BDSA membrane with introduction of BDSA in ultrathin layer displays a significant nitrate rejection of 92.2% and an acceptable permeation flux of 21 L m −1 h −1 at 0.6 MPa. As anticipated, the obtained NF-MNPs1.0 membrane with additional incorporation of MNPs (1.0 wt% addition) in the substrate layer of NF-BDSA membrane achieves further improvements in nitrate rejection (95%) and water permeability (32.3 L m −1 h −1 ); encouragingly, this membrane exhibits comparable monovalent ion rejection and permeation flux to reverse osmosis membrane under relatively low pressure. Compared with those of NF-0 membrane, the permeation flux and nitrate rejection of NF-MNPs1.0 membrane increase by 111.1% and 6.1%, respectively. Moreover, the superior performances of endurance, antifouling and chlorine resistance of NF-MNPs1.0 membrane demonstrate its expectable perspective of potential engineering applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 39
·e56007
·
IF 2.7
Zi-Ying Yao,Sher Ayaz,Xin-Miao Yin,Hai-Yin Yu
Using highly sulfonated poly(ether ether ketone) (SPEEK) as the base material, the structure and properties of poly(ether ether ketone) (PEEK) membranes are optimized by precisely controlling the doping of phosphotungstic acid (HPW), dopamine (DA), and various amounts of carbon nanomaterials. Compared with conventional PEEK membranes, this optimized membrane exhibits higher proton conductivity, lower water absorption swelling rate, and excellent thermal stability. Highly SPEEK is soluble in water, thus fails to be used in fuel cell applications. Herein, we conduct Friedel-Crafts method to obtain cross-linked highly sulfonated membrane with controlled water uptake and swelling while still maintaining high proton conductivity. The polymer is then doped with phosphotungstic acid (HPW) to acquire enhanced performance. To control HPW leakage, polydopamine (PDA) acting as double-sided adhesive is incorporated within the membrane. By distributing 1 wt.% PDA, the HPW leakage is reduced almost three times. The composite C-SPEEK/HPW x /PDA y membranes have exhibited excellent overall performance. Specifically, the best proton conductivity result of C-SPEEK/HPW 50 has reached 0.271 S/cm. Moreover, it has presented superb performance in H 2 /O 2 single cell test recorded as power density of 886.13 mW/cm 2 while current density is 1614.20 mA/cm 2 at 60°C.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Hong Yang,Yan Bao,Chao Liu,Sike Yu,Ruyue Guo,Wenbo Zhang,Ji Li
Polyacrylate was widely used in textiles, leather, and functional coatings due to its excellent film formation and flexibility. However, its durability was compromised by mechanical damage and poor water resistance. This study aimed to design a UV-induced self-healing polyacrylate coating (PXD) using vinyl-modified coumarin and acrylate monomers based on photoreversible covalent and hydrophobic interactions. The effect of the coumarin structure on the mechanical and self-healing properties was systematically examined. Results showed that increasing polymer chain flexibility, extending the distance between coumarin structures and the main chain, and raising the healing temperature enhanced self-healing efficiency. The PXD samples achieved over 84% healing efficiency after 8 h of 365 nm UV irradiation at 60°C, with scratches approximately 15 μm wide nearly fully healed within 2 h. Molecular dynamics simulations confirmed the influence of monomer structure on polymer flexibility, and the PXD self-healing mechanism was clarified. PXD-5 also exhibited improved hydrophobicity and water resistance, particularly under UV light, significantly enhancing leather durability. This development of UV-induced self-healing polyacrylate coatings represents a significant advancement in functional coating materials.
✓ 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）