JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Na Ma,Ke Li,Bo Xu,Huafeng Tian,Songbai Ma,Jinlong Li,Yuge Ouyang,Qian Liu,Dagang Liu,Rakesh Kumar
To solve the problem of the presence of heavy metals in water causing water pollution, the biodegradable film based on zein/polyvinyl alcohol (PVA) with the incorporation of nano-hydroxyapatite (nHAP) was fabricated through an electrospinning technique. The copper ion was taken as the representative of heavy metal ions in this study. The result showed that the incorporated nHAP nanoparticles were dispersed within the zein/PVA matrix, and strong hydrogen bonding interactions were formed between the filler and matrix, improving the hydrophobicity of the nanofibrous films and maintaining thermal stability. The adsorption mechanism was analyzed by fitting the adsorption process with pseudo-first-order model and pseudo-second-order model. Based on the ion exchange effect, electrostatic interaction, and complexation, the adsorption capacities of nanofibrous films for Cu(II) were significantly increased after adding nHAP. When the nHAP content was 20 wt.%, the Cu(II) adsorption capacity reached up to 23.86 mg/g, and the adsorption efficiency was 13.94% higher than that of neat zein/PVA nanofibers. This work suggests the potential of the electrospun zein/PVA/nHAP nanofibrous films as desirable eco-friendly materials in metal removal applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Songbin Wang,Xinlei Gao,Longfei Weng,Chunqing Huo,Xueyu Du,Xueqiong Yin
As one of the five major engineering plastics, polycarbonate (PC) has been applied in many industrial fields. However, its poor wear- and UV- resistance greatly limit its further promotion. Inspired by the dual benefits of inorganic–organic hybrid filler, in this study, we developed a novel type of catechol group- and nano silica-containing reinforcing filler (CFNS) for the preparation of wear- and UV-resistant PC-based composite films. With a low level of filler content (1%), the coefficient of friction (COF) was distinctly reduced from 0.14 (neat PC film) to 0.06 (composite film), benefiting from a wear-resistant surface layer. On the basis of ensuring high and stable transmittance for visible light, the composite films also exhibit strengthened capacity of UV shielding for the waveband from 293 to 400 nm. In addition, the general performance of composite films including tensile strength, tensile modulus, and thermal stability have also been improved in different degrees. Therefore, the composite films reinforced by CFNS are highly promising for a wide range of applications, ascribed to their improved general properties as well as two additional functions of wear- and UV-resistance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 15
·e55213
·
IF 2.7
Yu Zhao,Manoj Puthia,Seong-Min Jo,Juan Guan,Mingjie Liu,Sujun Wu
Biocompatible, tough, and photoluminescent hydrogels are highly desirable for biomedical applications in vivo. Herein, hybrid hydrogels prepared from silk fibroin (SF) and polyacrylic acid (PAA) and complexed with europium, named as SF-PAA-Eu 3+ hydrogels, exhibit good comprehensive properties. Owing to the intensive molecular interactions among SF, PAA, and Eu 3+ , SF-PAA-Eu 3+ hydrogels show a greatest tensile strength of 0.58 MPa, elongation of 443%, and work of fracture of 1.65 MJ/m. In vivo imaging experiment in a mouse subcutaneous implantation model revealed excellent and sustained photoluminescence of the SF-PAA-Eu 3+ hydrogels for 24 h. The work provides a strategy for designing functional SF-based hydrogels for imaging applications in vivo.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yihui Xu,Yudong Liu,Ling Liu,Jun Liu
The blending of different elastomers can greatly broaden the application range of rubber materials. However, due to the poor compatibility between polar elastomers and non-polar elastomers, severe phase separation occurs during the blending process, which severely degrades their processing performance and mechanical properties. In this paper, we prepared SBR-P/XNBR blends by emulsion blending polar modified styrene-butadiene rubber (SBR-P) latex with carboxylated nitrile rubber (XNBR) latex. The effects of the blending ratios on the vulcanization behavior, mechanical strength, dynamic mechanical properties, and oil resistance of the rubber compounds were studied. Experimental results showed that the mechanical strength and oil resistance of the modified SBR-P/XNBR blends are significantly higher than the unmodified SBR and XNBR blends. The dynamic mechanical analysis curve results of the rubber compounds showed that SBR-P has good compatibility with XNBR. With the increasing addition of XNBR, the oil resistance of the rubber compounds improves, and the solvent adsorption is reduced by over 60%.This study proposes a solution for utilizing non-polar rubbers, which are typically not oil-resistant, in oily environments. The proposed solution enables the preparation of composites with excellent mechanical properties in such environments.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Zhisong Li,Linbo Wu
Poly(ethylene 2,5-furandicarboxylate) (PEF) is an important biobased polyester with better thermal, mechanical, and gas barrier properties than poly(ethylene terephthalate). In PEF synthesis, diethylene glycol furandicarboxylate (DF) is inevitably formed via etherification side reaction. Taking advantage of the side reaction, poly(ethylene-co-diethylene furandicarboxylate) (PEDF) poly(ether-ester)s were synthesized only from 2,5-furandicarboxylic acid (FDCA) and ethylene glycol (EG), using a cheap binary propanedisulfonic acid/dibutyltin oxide (PSA/DBTO) catalyst. The polymers were characterized by 1 H NMR, intrinsic viscosity, solubility, differential scanning calorimetry, thermogravimetric analysis, tensile, and gas barrier test. Due to strong acidity of PSA, not only major DF but also minor oligoethylene glycol furandicarboxylate ether-containing units were formed. Their total content can be adjusted up to 78 mol% by simply increasing the dosage of PSA from 0 to 0.4 wt%. The effect of ether-containing units on the solubility, thermal transition, mechanical, and oxygen barrier properties of the poly(ether-ester)s were examined and compared with the poly(ether-ester)s synthesized via copolycondensation.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 16
·e55254
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IF 2.7
Saifei Fang,Xin Pu,Ali Usman,Jiawen Hu,Xin Han,Lei Ye,Yunlong Qin,Pengpeng Liu,Bo Luan,Jichang Liu
Asphaltenes and waxes are the primary factors affecting the cold flow properties of crude oil. In this paper, based on the binary polymer of acrylate-maleic anhydride (PM 22 -MA), different third polar groups of acrylamide, N -(hydroxymethyl) acrylamide, N -phenylacrylamide (NPA), and styrene (SM) were introduced to synthesize a series of ternary pour point depressants (PPDs) to explore the effect of asphaltene on the cold flow properties of Xijiang (XJ) crude oil. Thereinto, PM 22 -MA-NPA containing amide group and benzene ring exhibited the best depressive effect, which decreased pour point by 14°C at 1500 ppm. The mechanism of interaction of the polar groups in PPDs with asphaltene was studied. The polar groups could form stronger hydrogen bonds with asphaltene, delaying the asphaltene macromolecule bonding, allowing the synergistic effect of PPDs and asphaltene to be better utilized to improve the cold flow properties of crude oil. Furthermore, the dipole moment magnitude and electron cloud density were calculated with Gaussian. It was found that the polar group with a dipole moment magnitude of 3.2244 debye and an electron cloud density ranging from −1.6364 to 1.9944 eV was the most suitable third polar monomer for the PPDs of XJ crude oil.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yixin Zhang,Shuang Chen,Wenxuan Cao,Jichao Zhang,Lan Peng,Haifeng Lu,Wenjing Ma,Ranhua Xiong,Chaobo Huang
Oil–water separation has attracted considerable concern for the increasing discharge of industrial oily wastewater and frequency of oil spill accidents. Conventional oil–water separation methods are not effective in treating emulsified oil. In this study, photothermal-responsive polyurethane (PU)/poly(methyl methacrylate)-block-poly(N-isopropylacrylamide) (PMMA-b-PNIPAM) fibrous membranes (denoted as PTFMs) with core-shell structure are fabricated. The as-prepared membranes exhibited photothermal-modulable water wettability. Significantly, the wettability and permeation flux can be tuned by light illumination during the oil–water separation process because of the incorporation of light-responsive Ag nanoparticles and thermal-responsive copolymers. In addition, the as-prepared membrane exhibited recyclability even for forty separation cycles. It was concluded that the photothermal-responsive composite fibrous membranes provide great potential for the development of remotely operated water treatment devices.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Rui Luan,Ziyao Zhao,Yuan Yuan,Chunxia Wang,Mei-Xian Li,Yu Ren
This study aimed to enhance the antibacterial and biocompatible properties of PLA nonwoven materials by plasma-assisted surface decoration with selenium nanoparticles. PLA nonwoven materials were pretreated by plasma surface modification technology for varying durations. Subsequently, Se nanoparticles obtained from the redox reaction of sodium selenite were loaded onto the PLA surfaces through impregnation. SEM images demonstrated that plasma pretreatment enhances the uniformity of Se nanoparticles as well as the contents loaded onto the PLA nonwoven materials. Based on EDS analysis, the relative concentration of Se elements increased with longer plasma pretreatment durations, reaching 6.38% after 6 min of treatment. XPS analysis confirmed the presence of elemental selenium nanoparticles. Furthermore, the results of surface wettability showed that the surface of Se/PLA composites changed from hydrophobic to super hydrophilic after the plasma and Se combined treatment. Moreover, bacterial inhibition of the Se/PLA composites substantially improved with increasing plasma pretreatment time. The Se/PLA composites with 6 min of plasma pretreatment showed the best antibacterial performance and biocompatibility, with inhibition rates against Staphylococcus aureus and Escherichia coli reaching 95.75% and 75.54%, respectively, and cell viability was over 99% for L929 cells. These functionalized Se/PLA composites exhibit tremendous potential for applications in novel antibacterial materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 30
·e55699
·
IF 2.7
Xuemei Bai,Jingmin Luan,Tingting Song,Haifeng Sun,Baolin Yan,Yuhua Dai,Jianxiang Yu
Graphitic carbon nitride (g-C 3 N 4 ) has received much attention as a metal-free photocatalyst for dye degradation and sterilization. However, the low photocatalytic bactericidal activity and the difficulty in recycling have limited its applications. Here, oxidatively modified g-C 3 N 4 grafted with polyethyleneimine (PEI) nanofiber membranes (PVA/PEI-OCN) was reported to enhance the photocatalytic activity. The modification by PEI grafting could reduce the recombination rate of photogenerated carriers and lead to more electrons for the photocatalytic reaction. In addition, electron spin resonance (ESR) results showed that the generation of reactive oxygen species (˙OH, ˙O 2 − and 1 O 2 ) were significantly enhanced in photocatalysis, leading to the significant enhancement of photocatalytic bactericidal activity and dye degradation. Furthermore, the PVA/PEI-OCN nanofiber membranes prepared by electrospinning had smooth surfaces and uniform fiber formation, with an average diameter of 380 ± 60 nm. The tensile strength was about 73.5% higher than that of PVA nanofiber membranes. The inhibition diameter of PVA/PEI-OCN-4 against Escherichisa coli ( E. coil ) could reach 20 ± 0.2 mm, and the maximum degradation efficiency of methylene blue solution (10 mg/L) could reach 92.8% within 120 min. This work provided an effective paradigm for the rational design of metal-free photocatalytic materials for elimination of bacterial and dye contamination.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Wei Zhao,Hongjing Liu,Chengpeng Zhang,Yuyang Cao,Yuying Xu,Xueli Liu,Zhen Lu
Metal–organic frame UiO-66-NH 2 was modified by 3-glycidyl ether oxypropyl trimethoxysilane (KH560), and KH560-UiO-66-NH 2 was synthetized and added to Pebax to prepare KH560-UiO-66-NH 2 /Pebax mixed matrix membranes (MMMs). The epoxy group of KH560 had an amine-epoxidation reaction with the NH 2 in UiO-66-NH 2 , which prevented UiO-66-NH 2 from agglutinating in the MMMs. In addition, the N H bond and OH bond of KH560-UiO-66-NH 2 could theoretically form hydrogen bonds with CO and N H bonds in the main chain of polymerization, respectively, so as to improve the interfacial compatibility between fillers and polymers. The structure and properties of the filler particles and MMMs were evaluated by Fourier transform infrared spectrometer, x-ray diffraction, scanning electron microscopy, and thermogravimetric analyzer. The results showed that the filler particles were successfully synthesized, and had good crystallinity, uniform size distribution, and good thermal stability. The inorganic and organic interfaces of MMMs had no obvious interface defects. The obtained KH560-UiO-66-NH 2 /Pebax MMMs showed CO 2 permeability of 111.52 Barre and CO 2 /N 2 selectivity of 92.16, which were 85.65% and 88.73% higher than that of pristine membranes, respectively. The gas separation performance of MMMs was significantly improved, exceeding the upper bound of 2008 Robeson.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 3
·e56393
·
IF 2.7
Hua Xin,Peiyi Zhang,Yiyi Xu,Bo Gao,Luoqi Yuan,Minli Wei
Acrylic resin, as a common coating and adhesive, possesses excellent heat resistance, weather resistance, and is inexpensive, making it widely used in industries related to automotive, construction, electronics, fabrics, and other sectors essential to our daily life. Traditional acrylic resin not only pollutes the environment but also poses certain health risks. Therefore, we studied the synthesis of a low-temperature self-crosslinking acrylic emulsions were synthesized by free radical solution polymerization using methyl methacrylate (MMA), butyl acrylate (BA), acrylic acid (AA), diacetone acrylamide (DAAM), hydroxypropyl acrylate (HPA), epoxy resin (E-51) as the monomers, vinyltriethoxysilane (A-51) as the coupling agent, and adipic dihydrazide (ADH) as the cross-linking agent. This water-based acrylic resin undergoes a crosslinking reaction between the carbonyl group of DAAM and the hydrazide group of ADH, substantially improved the drying speed and adhesion compared to unmodified versions, and also improved the thermal stability. The contact angle of the film increased from 72.8° to 86.9° with the increase of the degree of cross-linking, and the mechanical properties were improved by 60%. This study provides a suitable formulation for preparing water-based acrylic resins with superior performance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhen Jiao,Shuo Zhang,Jinjing Wang,Yi Zhang
The iron oxide nanoparticles (IONs), coated with different materials, are synthesized and utilized as nucleating agents to prepare magnetic multi-modal porous scaffolds of poly (lactic- co -glycolic acid)/IONs using the supercritical carbon dioxide (ScCO 2 ) foaming process. The effects of the modification materials, including citric acid, polycaprolactone, and polyvinyl acetate, on the foaming process and properties of the magnetic scaffolds are systematically investigated. The results indicate that the solubility and diffusion ability of CO 2 in the foaming materials played a vital role in the foaming process. The use of CO 2 -philic materials and high pressure proves beneficial in generating micropores. The scaffolds with multi-modal porous structures can be obtained at relatively low pressure for the ScCO 2 foaming systems evaluated in this study. Furthermore, the prepared scaffolds exhibit high porosity and a good compressive modulus (higher than 0.4 MPa), satisfying the requirements of tissue engineering for soft tissue scaffolds.
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高影响因子
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