JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Tao Liu
The indiscriminate discharge of wastewater containing a large amount of organic solvents has led to increasingly serious water pollution problems. Although absorbents-based removal methods can effectively remove organic solvents from water, the currently used absorbents have the problem of complex preparation processes. This work uses green polydimethylsiloxane (PDMS) to propose a simple dip-coating method to directly transform discarded young coconut husk (YCH) into an absorbent, PDMS-coated YCH, which directly avoids multiple synthesis steps and the use of harmful chemicals. Relying on the water repellency provided by PDMS, the absorbent has the ability to remove organic solvents from water, showing an excellent organic solvents-water separation capability. After this absorbent is used continuously 15 times, the adsorption removal efficiency of the absorbent remains at 99.2% and it also retains its own structural characteristics, demonstrating outstanding recyclability. Not only that, the prepared absorbent also has excellent self-cleaning and anti-fouling ability, showing good practical application potential. This work not only uses more environmentally friendly synthetic materials but also proposes a simpler method for preparing absorbents, which can be applied to the development and utilization of other types of agricultural waste biomass.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 5
·e54892
·
IF 3
Yinghu Song,Guojun Song,Jialiang Li,Xiangsi Tang,Shuang Yin,Jiayan Mai,Xiaoru Li
Designing an elastomer that possesses both mechanical strength and self-healing properties is a challenging. In this study, a polyurethane elastomer (PUSTP) was successfully synthesized, featuring disulfide bonds along the main chain and graded intermolecular hydrogen bonds. The results demonstrated that the mechanical properties of the polyurethane elastomer improved with an increase in the number of disulfide bonds increased. Specifically, when the molar ratio of disulfide bonds to IPDA was 5:5, the tensile strength of the composite elastomeric film was 5.22 MPa, with an elongation of 1820.26%. Furthermore, the material exhibited robust thermal stability after undergoing repair at 70°C for 12 h, the mechanical strength of the polyurethane membrane remained unchanged, showing outstanding self-healing capabilities. Additionally, the polyurethane film served as the substrate material for crafting self-healing conductive devices, which maintained excellent electrical conductivity even after damage repair. This flexible material, combining impressive mechanical recovery capabilities with electrical performance, holds significant promise for a wide array of applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 4
·e54853
·
IF 3
Meng Xie,Ke Yang,Yuye Wang,Xinjian Cheng
Heavy metal (HM) pollution is getting worse with the society progress. Identification and separation of HM ions are urgent issues in environmental protection and social development. In this work, 4-bromo-1,8-naphthalic anhydride was first reacted with amino-propylene glycol to synthesize naphthimide fluorophores bearing two hydroxyl groups. And then, –Br was substituents by 8-mercaptoquinoline, 2-mercaptoimidazole, and 4-mercaptopyridine, respectively. Eventually, it was reacted with 1,5-naphthalene diisocyanate (NDI) to synthesize fluorescent polyurethane (PU) films through the reaction between –OH and –NCO. It is found that the PU film not only has a specific identification ability to Hg 2+ /Hg + and Fe 3+ ions, but also can efficiently remove Hg 2+ /Hg + and Fe 3+ ions through adsorption. In addition, selective identification by fluorescence quenching was investigated. It is due to the photoinduced electron transfer mechanism (PET). Furthermore, the lowest detection limits for Fe 3+ , Hg 2+ , and Hg + were 6.0 × 10 −7 M, 4.7 × 10 −7 M, and 9.7 × 10 −7 M, respectively, which reflected the sensitivity of the probe and made it fluorescence probes. The three fluorescent small molecules were incorporated into PU, which not only retain their identification function, but also serve the purpose of adsorption and separation of HM ions.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 5
·e54876
·
IF 3
Xiaochun Liu,Jianyu Wu,Jianxin Wu,Zhiyi Huang,Wei Shen,Xingshan Yin,Yingjuan Sun,Xiaofeng Lin,Wenjing Lin,Guobin Yi
Based on the irresistible inherent trade-off between the mechanical and self-healing performances of cross-linked polyurethane materials, there is still an intractable challenge to design efficient self-healing and tough elastomers, especially in flexible sensors. Herein, a tough, efficient self-healing, and recyclable cross-linked polyurethane elastomer (DTPU) was prepared by integrating oxime-carbamate bonds and thiourethane bonds into the network. The extraordinary mechanical properties and self-healing performances of DTPU elastomers were related to the synergistic effect of oxime-carbamate bonds in the main chain and thiourethane bonds in the chemical cross-linked sites. The existence of dynamic cross-linked points not only optimized the mechanical properties of DTPU but also provided support for the reversible cleavage and formation of oxime carbamate bond, thus endowing DTPU with efficient self-healing performance and recyclability. After self-healing at mild temperatures for 6 h, the self-healed DTPU elastomers had a tensile strength of 30.27 MPa and a self-healing efficiency of 95.5%. After multiple hot-pressing, the original mechanical strength of DTPU was restored to over 100%, exhibiting excellent recyclable characteristics. Additionally, strain sensors based on self-healing flexible elastomers were fabricated by introducing conductive carbon nanotubes. The strain sensors maintained their electrical conductivity after 3 times self-healing, demonstrating great potential in healable flexible electronics.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 5
·e54874
·
IF 3
Jiaying Tu,Cen Chu,Yifei Gao,Zhenfeng Wang,Pei Xu,Yunsheng Ding
To overcome the issues of poor toughness and low dielectric constant associated with PLA, which limit its application in the electronics industry, we introduced an insulating polydopamine (PDA) layer on the surface of core-shell nickel-coated carbon nanotube (Ni-CNT) and nickel-coated graphene (Ni-GRA). Through a double-layer structural design approach, we successfully prepared polylactic acid (PLA)/polycaprolactone (PCL) blends that exhibit high dielectric constant (ε’) and low dielectric loss (tanδ). This innovative design led to impressive impact strengths of 29.41 kJ/m 2 for PLA/PCL/4Ni-GRAs and 22.54 kJ/m 2 for PLA/PCL/4Ni-CNTs. PDA enhanced the interfacial interactions between the filler and matrix, which improved the dispersion of Ni-CNTs and Ni-GRAs and contributed to the mechanical properties of the PLA/PCL blends. Simultaneously, PLA/PCL/4Ni-CNTs and PLA/PCL/4Ni-GRAs exhibited commendable integrated dielectric properties. The PDA@fillers form microcapacitors with the polymer matrix and the conductive Ni layer enhances ε’ and reduces the conductivity difference between fillers. Furthermore, the insulating PDA layer contributed to improved dispersion, inhibition of charge carrier migration, and reduction in tanδ. At 1000 Hz, the ε ′ of PLA/PCL/4Ni-CNTs and PLA/PCL/4Ni-GRAs increased to 88.3 and 124.6, respectively, and the tanδ values remained below 1, indicating minimal dielectric loss. This provides a promising direction for eco-friendly materials with enhanced dielectric and mechanical properties.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 5
·e54884
·
IF 3
Chunmiao Bo,Xiaofan Tang,Zhuanhong Jia,Yinhai Li,Bolin Gong,Xiaohua Ma,Xiaojun Dai
Restricted access materials (RAMs) with adjustable selectivity was developed for the removal and detection of residual dyes for the solve problems of dye contamination. In this work, using homemade poly(4-vinylbenzyl chloride-co-divinylbenzene) (P VBC/DVB ) microspheres as substrate and successive two-step surface-initiated atom transfer radical polymerization (SI-ATRP) as synthesis method, the two types of monomers, sodium 4-vinylbenzene sulfonate (Nass) and styrene (St) were first grafted for constructing mixed interactions of adsorption sites, and then the hydrophilic glycidyl methacrylate (GMA) was polymerized, following by hydrolysis to construct diol groups on the external P VBC/DVB as the restricted access sites. The developed P VBC/DVB @poly(St- co -Nass)@poly(GMA) of adsorption properties was investigated by six dyes including methylene blue (MB), basic fuchsin (BF), acid fuchsin (AF), neutral red (NR), methyl orange (MO), and Congo red (CR), the adsorption capacities of those dyes and the removal rate for the binary mixed dye solution both rely on the ratio of St/Nass, confirming the adjustable adsorption selectivity. When P VBC/DVB @poly(St- co -Nass)@poly(GMA) was packed as solid phase extraction adsorbent in couple with UV–vis spectrum, it was applied to the determination of MB and BF in the water, fish and shrimp, good linearity with satisfactory recoveries for MB and BF are obtained to show the favorable practicability.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·
IF 3
Muhammad Ali,Ji-Huan He
Modern applications in biomedicine, drug delivery, and tissue engineering demand versatile materials capable of meeting multifaceted requirements. Conventional mono-functional materials fall short of addressing these complex demands. To tackle this challenge, this study introduces an innovative approach utilizing bubble electrospinning for the fabrication of bipolymeric side-by-side nanofibers. These nanofibers incorporate distinct hydrophilic and hydrophobic domains aligned parallel to their axis, achieved through the electrospinning of polyvinyl alcohol (PVA) as the hydrophilic component, alongside either poly(ε-caprolactone) (PCL) or Nylon6 as the hydrophobic component. The optimal diameter of the bubble electrospinning reservoir was theoretically determined via simulation of electric field using Maxwell 3D software and experimentally validated. Successful electrospinning resulted in nanofibers with hydrophilic and hydrophobic domains derived from PVA/Nylon6 and PVA/PCL polymer combinations. This innovative process yielded nanofibers with diameters as fine as 101 nm in the PVA/Nylon6 bipolymeric nanofibers. Transmission electron microscopy images provide compelling insights into the distinct interfaces formed during polymer-polymer interactions within the nanofibers, manifesting the Janus structure. Furthermore, Fourier-transform infrared spectroscopy confirms the presence of both polymers within the nanofiber matrix. This research represents a significant advancement in the efficient production of bipolymer nanofibers, holding promise for a wide range of applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 4
·e54858
·
IF 3
Mengyao Jiang,Likang Qin,Jingjie Han,Qiuying Li
Chloroprene rubber (CR) is frequently quoted as an example of strain-induced crystallizing elastomer. Many researchers have focused on studying the aging mechanism and mechanical properties of aged CR, little has been done on the effect of crosslinking structure on strain-induced crystallization (SIC). The present paper related systematic investigations combining the changes of crosslinking structure and its influence on SIC. It was firstly investigated based on FTIR, crosslinking density test and GPC. The results showed that the molecular chains were oxidized in the early stage of aging, but the crosslinking reaction still dominated. At the same time, sol content and polydispersity decreased. In the later stage of aging, CR was oxidized, resulted in severe molecular chains fracture and an increase in the free sol content and polydispersity. The impact of aging on SIC under tensile condition was further investigated by the tensile tests. An obvious stress-hardening was found for unaged CR, but not in aged CR. The crystallinity and microcrystalline region orientation tests showed that oxidation, crosslinking by double bonds and dechlorination during aging were not conducive to the orientation of molecular chains during stretching. It is the aging process that has an adverse effect on the SIC of CR.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 6
·e54911
·
IF 3
Mengqing Ren,Zixin Wu,Lili Wu,Bing Yu,Weilin Wu,Baoying Liu,Shengqiang Xiao
The pulley structure has been widely employed to improve mechanical properties. Polyrotaxane-based waterborne polyurethane (WPU) typically exhibits good tensile strength and Young's modulus. However, achieving outstanding self-healability of polyrotaxane-based WPU under mild conditions generally proves insufficient solely relying on host-guest interactions. Herein, a strategy that constructs a triple synergy of host-guest interaction, hydrogen bonds, and metal coordination bonds by sequentially introducing tannic acid (TA) and Fe 3+ is proposed to prepare polyrotaxane-based WPU with excellent mechanical performance and high self-healable capability. Besides the reversible non-covalent bonding contributing to intrinsic self-healing, the unique sliding motion of WPU's molecule chain acts as a driving force, promoting efficient contact among reversible bonds. Notably, benefiting from the sliding motion of β-cyclodextrin (β-CD) along a chain, the dynamic reconstruction of hydrogen bonds and metal coordination bonds, the resulting supramolecular WPU exhibited a tensile strength of 46.05 MPa and a toughness of 130.30 MPa, with satisfactory self-healing performance (tensile strength healing efficiency of more than 95%). This work enriches the self-healing mechanism and expands the concepts for the design of resilient self-healing environmentally friendly supramolecular WPU.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 6
·e54921
·
IF 3
Wentao Ma,Zhijie Hu,Yu Zhang,Jie Ma,Guopeng Xin
Free radical polymerization was selected to obtain a promising copolymer scale inhibitor IA-AM-SAS with good water solubility and temperature and salt resistance, which is suitable for the treatment of surface pipeline water in oil fields, using itaconic acid (IA), acrylamide (AM), and sodium acrylsulfonate (SAS) as the monomers. The structure of the synthesized copolymer was verified by Fourier transform infrared spectroscopy and nuclear magnetic resonance hydrogen spectroscopy. Thermogravimetric results showed that the copolymer does not undergo significant thermal degradation at temperatures below 356°C, indicating that the copolymer has good thermal stability. The molecular weights of the polymers at different monomer ratios were measured using gel permeation chromatography and the relationship between the molecular weights and scale inhibition performance was discussed. The results showed that the scale inhibition effect was best when the monomer molar ratio n(IA): n(AM): n(SAS) was 0.5:2:1.5 and the number of average molecular weight of the prepared copolymer was 7712 g/mol, and the inhibition efficiency of CaCO 3 was 84.02% when IA-AM-SAS was at a concentration of 30 mg L −1 , and the inhibition rate was measured by the standard of static scale inhibition test in the oilfield measured. The range of conditions (PH, Ca 2+ concentration, water temperature, and time) of the static scale inhibition test was then expanded using a one-way controlled variable experiment to explore the performance of IA-AM-SAS scale inhibitors under different water quality conditions. The scale inhibition mechanism was explored by scanning electron microscopy, x-ray diffraction, and x-ray photoelectron spectroscopy. Briefly, the combination of multiple functional groups enables IA-AM-SAS to be applied in complex and challenging environments.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 6
·e54927
·
IF 3
Kang Yang,Yongping Niu,Xiaowei Wang,Sanming Du,Yongzhen Zhang,Junkai Zhang,Junqing Cai
Cured epoxy resins have poor abrasion resistance, which shortens the service life of the material. This work aims to improve the tribological properties of epoxy resins by coupling self-lubrication and auto-healing. In this study, linseed oil microcapsules with an average particle size of 38.57 μm and good thermal stability were successfully prepared by in situ polymerization. The effects of microcapsule content on the tribological, mechanical, and self-healing properties of the composite coatings were studied. It was demonstrated that the composite coating has outstanding self-lubricating properties. The coefficient of friction reduced from 0.634 (pure epoxy resin) to 0.0459 (epoxy resin with 10 wt.% linseed oil microcapsules). Wear rate reduced from 7.16 × 10 −4 mm 3 /(N m) to 1.74 × 10 −5 mm 3 /(N m). The self-lubricating mechanism of the coating was investigated by SEM and EDS, which indicated that the formation of uniform and continuous lubricating film on the surface of the friction pairs was the key to improving the wear resistance of the material. In addition, the linseed oil released after the microcapsules rupture can repair the abrasion marks by reacting with oxygen during the friction process. The dual-functional effect of linseed oil microcapsules prolongs the life of epoxy resin coating and expands its application range.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 6
·e54907
·
IF 3
Linhan Mao,Di Chen,Congcong Cui,Yue Lian,Yulin Ma,Zhaoxia Chen,Yuhong Zhang
With the occurrence of offshore oil spills, the recovery of viscous oil continues to be a significant issue. The multi-functional sponge with superhydrophobic, absorption of high viscosity oil is an effective approach to settle this problem. In this work, the melamine-formaldehyde (MF) sponge was the backbone and doped with polydopamine (PDA) to mimic mussels. Subsequently, candle soot nanoparticles (CS) and polydimethylsiloxane (PDMS) were applied to modify the MF sponge into a superhydrophobic sponge (P-CS-PDA@MF) (WCA = 153.56°). The P-CS-PDA@MF sponge showed good absorption properties for many oils and organic solvents (33.87–78.90 times of its own weight). In addition, the P-CS-PDA@MF sponge also showed outstanding chemical stability, low density (0.013 g/cm 3 ), emulsion-breaking ability and flame retardancy. More interestingly, the P-CS-PDA@MF sponge showed superior photothermal conversion capability, the temperature of it increased to approximately 91°C within 100 s under simulated sunlight from room temperature (about 25°C), and the sorption capacity of viscous oils was significantly increased. Moreover, the P-CS-PDA@MF sponge exhibited a high efficiency (over 97%) for separating viscous oils/water mixtures with the aid of sunlight. This versatile and efficient multifunctional P-CS-PDA@MF sponge via a simple and low-cost way shows promising prospect in oily wastewater treatment and water ecosystem remediation.
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高影响因子
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