JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 39
·
IF 1.866
Sha Liu,Jianxin Zong,Zhen Wei,Hang Zhang,Ligai Bai,Haiyan Liu,Hongyuan Yan
An ionic liquid (IL)-based monolithic poly(ionic liquid glycidylmethacrylate- co -ethylene glycol dimethacrylate) column was prepared via in situ free-radical polymerization with 1-vinyl-3-butylimidazolium chlorine as one of the comonomers. The obtained monolithic column was used as the sorbent of solid-phase extraction (SPE) and coupled with high-performance liquid chromatography for the simultaneous determination of the macrolide antibiotics roxithromycin (ROX) and acetylspiramycin (ACE) in processed pure milk. The monolithic column was characterized by Fourier transform infrared spectrometry, scanning electron microscopy, nitrogen absorption–desorption, mercury intrusion porosimetry, and thermogravimetric analysis. The results reveal that the monolithic column exhibited a high selectivity and good permeability to the macrolide antibiotics in milk. The optimized method offered excellent linearity with a linear regression coefficient greater than 0.998. The precisions for interday and intraday were both less than 7.7%. The accuracies expressed by the recoveries for ROX and ACE were in the ranges 92.5–103.8 and 93.0–107.6%, respectively. Compared to the previous methods, this method had a low limit of detection and a good accuracy. As a result, the polymer IL based monolithic column could feasibly be used as a high-selectivity online SPE sorbent for determining trace macrolide antibiotics in milk. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43943.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 1
·49612
·
IF 2.52
Jianbing Cui,Bo Mu,Baoping Yang,Jinfeng Cui,Junhong Guo,Li Tian,Xia Wang
Self-lubricating composite with stimuli-responsive properties attracts great interest in recent years. Herein, mesoporous silica (MS) as oil-laden containers is explored to achieve self-lubricating feature. The as-prepared MS possesses a high Brunauer-Emmett-Teller (BET) surface area (1,542.35 m 2 /g), which satisfies the criterion for construction of ideal repository for storing enough liquid lubricants. In addition, the thermal stimuli-responsiveness behavior of the oil-laden mesoporous silica (OMS) for lubrication has been investigated by thermogravimetric analyzer tester. As expected, an excellent tribological performance (friction coefficient and wear rate decreased by 63.29 and 82.63%) is obtained by adding 10 wt% OMS into the polyurathene matrix, showing great promise for self-lubricating application.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 136
·期 1
·46897
·
IF 1.901
Huayong Luo,Hongwei Rong,Tian C. Zhang,Xueyang Zeng,Jun Wan
Amino-functionalized magnetic zirconium alginate beads with an interpenetrating network (Fe 3 O 4 /PAM/SA–Zr) were prepared, characterized, and then tested as a novel biomass adsorbent for phosphate removal and recovery. The hydrogel beads exhibited outstanding thermostability and possessed a magnetic response. The effects of the pH, dosage, initial phosphate concentration, interference ions, and temperature on the removal of phosphate were investigated. The kinetics, isotherms, and thermodynamics of the adsorption were studied. Notably, the adsorption of phosphate was endothermic, feasible, and spontaneous with a maximum uptake capacity of 42.23 mg-P/g at an optimized pH of 2.0. The phosphate could be desorbed effectively with a 0.2 mol/L NaOH solution, and the adsorbent exhibited a good reusability. The possible adsorption mechanisms were verified by zeta potential, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy analyses. Continuous phosphate-adsorption tests were conducted in a fixed-bed columns packed with Fe 3 O 4 /PAM/SA–Zr, and the breakthrough curves were predicted by the Adams–Bohart, Thomas, and Yoon–Nelson models, respectively. The suitability of the hydrogel beads for the treatment of real wastewater was also tested. These hydrogel beads should be a promising adsorbent for phosphate removal and recovery from aqueous solutions, with the advantages of a high uptake capacity, good reusability, and easy magnetic separation. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 46897.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 34
·47896
·
IF 2.188
Changjie Yin,Qiuyu Zhang,Zhuorui Zhang,Chengyuan Zhu,Jianxun Liu
The emulsion free-radical copolymerization of vinyl triethoxysilane (VTES) with styrene (St) and butadiene (Bd) was initiated by cumene hydroperoxide and ferrous sulfate at 0 °C. The effects of VTES on the copolymerization conversion, reaction time, gel content, latex particle size, thermal stability, and mechanical properties were thoroughly investigated. The success of this reaction was confirmed by the peaks attributed to both Si─O─Si groups at 1065 cm −1 and the Si─O─C bond at 1046 cm −1 . A kinetics analysis showed that the conversion decreased with increasing VTES mass in the monomer feed. Compared with that in the St–Bd copolymer, the latex particle size increased slightly with increasing VTES mass. The Mooney viscosity and gel content results show that a large fraction of precrosslinking molecular chains was formed in the rubber particles. The thermogravimetric analysis results indicate that the thermal stability of the copolymers increased with increasing VTES concentration. The 300% modulus and tensile strength of the St–Bd–VTES copolymer increased with the mass of VTES at first and then decreased after 3 phr VTES, whereas the elongation at break decreased with increasing VTES mass. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47896.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 31
·45163
·
IF 1.86
Wanping Cai,Xiangyan Ma,Jiahong Guo,Xing Peng,Sai Zhang,Zhoutong Qiu,Jie Ying,Jikui Wang
Poly( p -styrene sulfonate- co -acrylic acid sodium) (PSA) from the copolymerization of acrylic acid sodium and p -styrene sulfonate monomers were used to dope poly(3,4-ethylene dioxythiophene) (PEDOT) to generate PEDOT–PSA antistatic dispersions. Compared to those of the PEDOT–poly( p -styrene sulfonate sodium) (PSS), the physical and electrical properties of the PEDOT–PSA conductive liquids were much better. The PEDOT–PSA films possessed a better water resistance without a decrease in the conductivity. The sheet resistance of the PEDOT–PSA–poly(ethylene terephthalate) (PET) films was about 1.5 × 10 4 Ω/sq with a 100 nm thickness, the same as the PEDOT–PSS–PET films. The transmittance of the PEDOT–PSA–PET films exceeded 88%. Furthermore, the environmental dispersity of the PEDOT–PSA antistatic dispersion was apparently improved by the dopant PSA so that the stability was extraordinarily promoted. Meanwhile, the water resistances of the PEDOT–PSA–PET and PEDOT–PSA films were also enhanced. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45163.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 26
·
IF 1.86
Zhoutong Qiu,Jikui Wang,Kun Yang,Jiahong Guo,Wenqi Wang,Renjie Pan,Genhua Wu
This study is focused on the development of high-performance composite materials based on nano silicon dioxide (nano-SiO 2 ) modified by polydopamine (PDA). A facile one-step method was developed to synthesize core–shell structured SiO 2 @polydopamine (PDA) nanospheres. During the synthesis, a PDA shell was simultaneously coated on the SiO 2 nanospheres to form the core–shell nanostructure which was blended with polypropylene (PP) and β nucleating agent (β-NA) to enhance both mechanical and hydrophilic properties. Nano-SiO 2 particles modified by PDA (SiO 2 @polydopamine) influence the crystallization of PP seriously. The results indicated that when 1%wt SiO 2 @polydopamine was added, the impact strength of composite reached the maximum value 12.60k J/m 2 increasing 137% compared with PP, the bending strength and bending modulus decreased slightly reaching 41.85 MPa, and 2192 MPa, respectively, the composite possessed hydrophilic performance with the water contact angle of 88.32°. β nucleating agent was used in all formulations, the synergistic effect toward mechanical properties with SiO 2 @polydopamine was studied. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45004.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 18
·52051
·
IF 3.125
Xinhui Gu,Juying Hou,Shiyun Ai
In recent years, the development of environment-friendly biodegradable and high-performing polymer composite for production has attracted much attention, motivated by the need to reduce the amount of microplastics accumulating in the environment. In this study, the poly (butylene adipate-co-terephthalate) (PBAT) and sodium lignosulphonate (SL) composite films with different loading of SL are synthesized. The PBAT/SL composite films show great UV-blocking capability and photostability. When the addition of SL reaches 10 wt%, the UV-B blocking of the composite films (P/L10) can reach about 100%. However, the tensile strength of P/L10 is about 32% less than that of neat PBAT. The silane modified nano-SiO 2 (m-SiO 2 ) , as a nano-filler, is well distributed into PBAT/SL composites, leading to improved tensile properties and the compatibility of PBAT with SL. The tensile strength of the P/L10/S2 (S2 denotes 2 wt% m-SiO 2 ) is about 55% more than that of P/L10 and 5% more than that of neat PABT. It can be observed from SEM that a suitable content of m-SiO 2 can improve the interfacial compatibility between PBAT and SL. This work provides innovative strategy for biodegradable PBAT/SL composites with remarkable UV-blocking ability and tensile strength.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 133
·期 10
·
IF 1.768
Lu Shen,Jian Zheng,Ying Wang,Mangeng Lu,Kun Wu
Phenolic novolac type epoxy resin has been modified with acrylic acid (AA) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) to form ultraviolet-curable coatings, and integrated performances of the coatings were evaluated. It was found that the hydrogen bonding interactions among the oligomers became stronger along with the increase of AMPS content, thus the oligomer viscosity and a variety of polymer properties were affected. The polar hydrogen bond donors significantly enhanced the adhesion strength and surface wetting behavior of the coatings. Meanwhile, hydrogen bonding interactions can also reinforce the three-dimensional structure of the film as in polymeric state, which potentially increased its glass transition temperature and mechanical properties. Results of chemical resistance showed that coatings modified with moderate amount of AMPS could be completely removed in several minutes when exposed to alkali solution or anhydrous ethanol. With these attractive features, modified films had prospective applications in temporary protective coatings. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43113.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 4
·e54846
·
IF 3
Xiangqian Fan,Xianming Zhai,Lei Liu,Jing Zhang,Lin Li,Jiarong Wang
In this article, a crosslinked waterborne poly(urethane-urea) (WPUU) is synthesized based on the terminal aromatic amine polyether (DP-1000) and aliphatic isophorone diisocyanate. Then WPUU is compound with acrylate monomer by emulsion polymerization to produce waterborne polyacrylate–poly(urethane-urea) (WPUUA) hybrid emulsions. Compared with waterborne polyacrylate (WPA) film, the film-forming ability of WPUUA film is improved and the surface roughness R a and R q of WPUUA film decreases from 47.5 and 36.4 nm to 35.2 and 18.8 nm, respectively. Meanwhile, the mechanical properties of WPUUA films are significantly improved compared to WPA film. In addition, the performances of WPUUA hybrid films can be modified according to requirements by adjusting the molar ratio between DP-1000 and polyisocyanate. As a result, these WPUUA hybrid emulsions have great application potential in waterborne coatings and other fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 9
·e55016
·
IF 3
Peng Wei,Qingkun Liu,Xin Hou,Qiong Zhou,Pengpeng Bai,Yonggang Meng,Liran Ma,Yu Tian
Nitrile butadiene rubber (NBR) has received a lot of attention as a sealing material, and its tribological performance is a crucial factor in determining the efficiency with which it will operate under various operating situations. In this study, NBR specimens with varying degrees of cyanide content, namely low cyanide (DN401), medium cyanide (DN2850), medium-high cyanide (DN3380), and high cyanide (DN4050), were selected to investigate their tribological behavior when subjected to NO.10 aviation oil. To emulate their frictional responses during startup and shutdown operations, all four types of NBR were assessed under dry conditions. As the cyanide content increased, the coefficient of friction (COF) dropped from 1.381 to 0.810 and wear rate dropped from 2.38 × 10 −3 mm 3 /(N m) to 1.88 × 10 −4 mm 3 /(N m). When employed in conjunction with NO.10 aviation oil, DN401 and DN3380 exhibited COFs of 0.0963 and a slightly higher value of 0.127, respectively. Following aging treatment at 80°C in NO.10 aviation oil, stress reduction reached 65.8%, indicating the poorest performance among the four variants of NBR. Considering the COF, wear rate, and aging performance, DN3380 emerges as the most favorable choice for practical applications, thereby offering valuable insights into the selection of nitrile rubber for sealing materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 132
·期 42
·
IF 1.768
Xuxia Yao,Hong Du,Ning Xu,Shuai Sun,Weipu Zhu,Zhiquan Shen
Fully degradable cationic poly(ester-phosphoester)s with antibacterial properties were prepared by a combination of ring-opening polymerization (ROP) and “click” reaction. First, poly(ester-phosphoester)s-bearing alkynyl groups were synthesized by the ring-opening copolymerization of 2-(2-propynyloxy)−2-oxo-1,3,2-dioxaphospholane (propynyl ethylene phosphate, PEP) and ε-caprolactone (CL) using lanthanum tris(2,6-di-tert-butyl-4-methylphenolate)s (La(DBMP) 3 ) as the catalyst. 2-Azido-N,N-dimethylethanamine (DMEAN 3 ) was then attached to the copolymers by “click” reaction, resulting in poly(ester-phosphoester)s with pendant tertiary amines. After the quaternization reactions between the copolymer and various alkyl bromides, cationic poly(ester-phosphoester)s containing ammonium groups were obtained. Optical density (OD) measurement shows that the cationic copolymers have excellent antibacterial activity, which makes them potential candidates as biomaterials. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42647.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2012
·Vol. 128
·期 1
·275-282
·
IF 1.289
Lei Miao,Mangeng Lu,Chaolong Yang,Yunfei Zhang,Tengfei Shen,Jianying Ma
Poly( N -isopropyl acrylamide) (PNIPAAm)- graft -poly(ethylene oxide) (PEO) hydrogels crosslinked by poly(ϵ-caprolactone) diacrylate were prepared, and their microstructures were investigated. The swelling/deswelling kinetics and compression strength were measured. The relationship between the structure and properties of hydrogel are discussed. It was found that the PEO comb-type grafted structure reduced the thermosensitivity and increased the compression strength. The addition of poly(ϵ-caprolactone) (PCL) accelerated the deswelling rate of the hydrogels. Meanwhile, the entanglement of PCL chains restrained the further swelling of the network of gels. The PCL crosslinking agent and PEO comb-type grafted structure made the behavior of the hydrogels deviate from the rubber elasticity equations. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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高影响因子
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