JOURNAL OF APPLIED POLYMER SCIENCE
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2013
·Vol. 131
·期 2
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IF 1.395
Jinsu Xiong,Lei Xia,Baoqing Shentu,Zhixue Weng
The fluoroalkyl-modified polyester (PE-F n ) was synthesized by the reaction of polyester resin (PE) and fluorinated isocyanate, and the structure of the synthesized product was characterized by proton nuclear magnetic resonance ( 1 H-NMR) and fluorine nuclear magnetic resonance ( 19 F-NMR). The water and oil wettability of the cured PE coatings with PE-F n as additives was investigated by contact angle meter. The results showed that the introduction of an extremely low concentration of PE-F n into PE led to the increase in contact angle of water and diiodomethane on cured PE coatings, and the decrease in the surface free energy. The X-ray photoelectron spectroscopic (XPS) analysis showed that the F/C molar ratio in the outer few nanometers was significantly higher than that in the bulk, indicating that the fluoroalkyl groups in PE-F n had enriched on the coating surface. It was also found that longer fluoroalkyl groups and fluoroalkyl groups with CF 3 at its end had the higher tendency to aggregate on the coating surface. The topological structures of the cured coatings were recorded by an atomic force microscope under tapping mode and the results revealed that there was a strong surface segregation of fluorinated species. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 39812.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2013
·Vol. 131
·期 2
·
IF 1.395
Li Li,Xiao-Dong Bi,Min Feng,Jia-Ting Zhu
Bisphenol A-based epoxy acrylate (BABEA), a commercial ultraviolet (UV)-curable material, was introduced as a new manufacturing material for facile fabrication of epoxy-functionalized micro-zone plates through UV-initiated copolymerization using glycidyl methacrylate (GMA) as the functional monomer. The poly (BABEA- co -GMA) was highly transparent in visible range while highly opaque when the wavelength is less than 295 nm, and of high replication fidelity. X-ray photoelectron spectroscope (XPS) results indicated the existence of epoxy groups on the surface of the poly (BABEA- co -GMA), which allowed for binding protein through an epoxy-amino group reaction. A fabrication procedure was proposed for manufacturing BABEA based epoxy-functionalized micro-zone plates. The fabrication procedure was very simple; obviating the need of micromachining equipments, wet etching or imprinting techniques. To evaluate the BABEA-based epoxy-functionalized micro-zone plates, α-fetoprotein (AFP) was immobilized onto the capture zone for chemiluminescent (CL) detection in a noncompetitive immune response format. The proposed AFP immunoaffinity micro-zone plate was demonstrated as a low cost, flexible, homogeneous, and stable assay for α-fetoprotein (AFP). © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 39787.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 8
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IF 1.768
Pengjuan Li,Fuwei Nian,Min Zhang,Minmin Shen,Yongqiang Dai,Hao Pang,Bing Liao
A low-residual siloxane-modified polyacrylate pressure-sensitive adhesive (PSA) with a high peeling strength was prepared by seeded semicontinuous emulsion polymerization. 3-Glycidyloxypropyltrimethoxysilane was introduced into the acrylic (AC) PSA through a thermal posttreatment method to crosslink with AC. To improve the adhesion properties, a polymeric emulsifier, 2-acrylamido-2-methyl-1-propanesulfonic acid, was introduced into the system with the conventional emulsifier. Several key polymerization conditions, such as the initiator concentration, mass ratio of soft monomer to hard monomer, the content of polymeric emulsifier, and siloxane dosages were examined in detail. Then, the optimal conditions and a proper preparation process were established. The results show that we achieved not only a low repeeling residue with high tack and peeling strength but also excellent properties of high-temperature aging resistance and water resistance. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 42975.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 9
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IF 1.768
Fang Qiu,Minle Peng,Zhimei Wei,Xiaojun Wang,Jie Yang
A novel kind of sulfonated polyethersulfonephenylethane (SPESPE) was successfully synthesized firstly in this work. Then the SPESPE was introduced in polyethersulfone (PES) microspheres prepared by the electrospraying technique. The microspheres were applied to adsorbing bisphenol A (BPA) from its aqueous solution. Compared with the PES microspheres, the adsorption capacity of PES/SPESPE microspheres for BPA was increased significantly. Furthermore, the adsorption capacity of PES/SPESPE microspheres was enhanced by increasing the amounts of SPESPE in the microspheres. The pH of solution had influence on the adsorption capacity of PES/SPESPE microspheres. The kinetic data of adsorption were found to follow pseudo-second-order model. The Freundlich isotherm model was suitable to describe the equilibrium adsorption data. The microspheres also showed excellent regeneration and reuse ability. These results indicated that the PES/SPESPE microspheres have the potential to be used in environmental application. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43066.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 11
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IF 1.768
Fei Qu,Shuwen Niu,Jinmao You
Hyperbranched poly(ethylene imine) (PEI)-capped Ag nanoclusters, synthesized starting from an aqueous environment, dispersed well in water and most polar organic solvents. However, with the addition of 1,4-dioxane, the PEI-capped Ag nanoclusters could be separated completely to obtain hydrophilic and hydrophobic Ag nanoclusters. Through this facile method, the successful phase transfer of PEI-capped Ag nanoclusters from the aqueous phase to the nonpolar organic phase, such as from water to carbon tetrachloride, chloroform, and methylene bichloride, was easily realized. The polarity reversal of Ag nanoclusters were considered to be associated with the conformational change of PEI on the basis of the hydrophobic methylene groups of polymer backbone facing the external side or internal side, and this polarity reversal was irreversible. Moreover, PEIs with higher molecular weights showed a higher efficiency of phase transfer of the Ag nanoclusters. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43206.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 11
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IF 1.768
Sheng Li Wu,Tie Jun Shi,Li Yuan Zhang
This study describes a simple and effective method of synthesis of a polyurethane/graphene nanocomposite. Cationic waterborne polyurethane (CWPU) was used as the polymer matrix, and graphene oxide (GO) as a starting nanofiller. The CWPU/GO nanocomposite was prepared by first mixing a CWPU emulsion with a GO colloidal dispersion. The positively charged CWPU latex particles were assembled on the surfaces of the negatively charged GO nanoplatelets through electrostatic interactions. Then, the CWPU/chemically reduced GO (RGO) was obtained by treating the CWPU/GO with hydrazine hydrate in DMF. The results of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Raman analysis showed that the RGO nanoplatelets were well dispersed and exfoliated in the CWPU matrix. The electrical conductivity of the CWPU/RGO nanocomposite could reach 0.28 S m −1 , and the thermal conductivity was as high as 1.71 W m −1 K −1 . The oxygen transmission rate (OTR) of the CWPU/RGO-coated PET film was significantly decreased to 0.6 cm 3 m −2 day −1 , indicating a high oxygen barrier property. This remarkable improvement in the electrical and thermal conductivity and barrier property of the CWPU/RGO nanocomposite is attributed to the electrostatic interactions and the molecular-level dispersion of RGO nanoplatelets in the CWPU matrix. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43117.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 10
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IF 1.768
Xuying Nan,Yi Huang,Qinguo Fan,Jianzhong Shao,Yuhua Yao
Three dye-linked photoinitiators with excellent spectral stability in an acid medium were synthesized by the covalent bonding of a coinitiator (tertiary amine) and a benzoyl group or two coinitiators to the phenolic and carboxyl group position of erythrosine B. The combination of the iodonium salt and free tertiary amino used to initiate the free-radical/cationic visible photopolymerization was investigated to acquire the relationship between the structure and performance. The photoinitiating ability of the derivative with the phenolic position bearing a coinitiator was poorer than of the derivative with the carboxyl group bearing one because of the strong back electron transfer of the former. For the derivative with a linked coinitiator on the carboxyl position, the proximity effect between the sensitizer and the coinitiator moiety resulted in an excellent photoinitiating ability for radical/cationic polymerization; this suggested its potential for application. Although radical/cationic photopolymerization could be initiated by the derivative/coinitiator/iodonium salt, the different component ratios between them had different effects on these two polymerizations; this provided useful information for the design of effective photoinitiators for different polymerizations. On the basis of the fluorescence quenching and photopolymerization results, a corresponding synergistic mechanism was proposed. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43035.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 133
·期 11
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IF 1.768
Yanan Zhang,Shaomei Huang,Chuntong Qian,Quanzhou Wu,Jianfeng He
The cinchonine molecularly imprinted photonic polymer (MIPP) film was prepared by using methacrylic acid as functional monomer, ethylene glycol dimethacrylate as cross linker, benzoyl peroxide and N,N-dimethylaniline as initiation system by a combination of colloidal crystal template method and molecular imprinting technique. The structure and morphology of the polymer film were characterized by infrared spectra and scanning electronic microscope. The results exhibit that a highly ordered three-dimensionally interconnected macroporous array with typical face-centered cubic (fcc) structure was formed in the MIPP film. The binding experiments showed that the special, hierarchical porous structure enabled this polymer to possess rapid adsorption kinetics, improved binding capacity, and specificity to analytes. The Bragg diffractive measurements showed that the MIPP film has good specific responsiveness for the template molecules. The Bragg diffraction peaks shifted from 527 to 503 nm with the concentration of the cinchonine varying from 0 to 10 −3 mol/L, whereas there were no obvious peaks shifts for its structural analogues. This may be ascribed that the changes in the lattice constants and the average refractive indices of MIPP film caused by the special adsorption of template molecules toward recognition sites. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43191.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 132
·期 37
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IF 1.768
Shan Li,Jianxin Xiong,Jingsong Shen,Yong Qin,Juan Li,Fuqiang Chu,Yong Kong,Linhong Deng
A novel electrochemical sensor based on Ag nanoparticles (AgNPs) decorated polyaniline/graphene composites (PANI/G) is developed, which can be used for sensitive determination of H 2 O 2 . For the construction of the H 2 O 2 sensor, polyaniline (PANI) is first electrodeposited on the surface of graphene (G) to form PANI/G, and then horseradish peroxidase (HRP) loaded on AgNPs (HRP/AgNPs) is immobilized on to the PANI/G. H 2 O 2 can be catalyzed by HRP to generate current response which can be significantly enhanced by AgNPs, and thus the PANI/G based sensor can be utilized for the detection of H 2 O 2 . Under the optimized conditions, the proposed H 2 O 2 sensor exhibits wide linear response to H 2 O 2 concentration ranging from 0.25 to 2.25 m M with a detection limit of 0.03 m M (signal-to-noise ratio of 3), and it also shows high selectivity and reproducibility. The method is simple and cost-effective, and can be a promising candidate as the sensitive sensing platform for H 2 O 2 . © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42409.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 132
·期 36
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IF 1.768
He Xiao,Beihai He,Junrong Li
Polystyrene (PS) spheres with cationic polyelectrolyte brushes were prepared by reversible addition-fragmentation chain transfer polymerization (RAFT) from cross-linked PS spheres. These PS spheres were subsequently modified by reaction with chloroacetyl chloride and S,S-Bis(α,α’-dimethyl-α”-acetic acid) trithiocarbonate to serve as macro chain transfer agents (macro-CTAs). Methacryloxyethyltrimethyl ammonium chloride (MAC) was then grafted from these macro-CTAs of PS spheres to obtain cationic PS spheres. FT-IR, 13 C-NMR, SEM, element analysis, and TGA techniques were applied to investigate and optimize the structure of PS spheres. The cationic PS spheres loading 1.35 mmol/g poly-MAC were used as absorbents for removal of polygalacturonic acid (PGA) and sodium ligninsulfonate (lignin-Na). Adsorption capacity of cationic PS spheres could reach 3 mg PGA/g and 24 mg lignin-Na/g, respectively. Moreover, adsorption isotherm data of PGA were described by Langmuir-Freundlich model, whereas lignin-Na conformed to Langmuir model. Kinetic studies suggested that dissolved substances (PGA and lignin-Na) could diffuse into the pores of cationic PS spheres. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42509.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 132
·期 36
·
IF 1.768
Jinku Xu,Weiyue Zhu,Leilei Zhang,Yongchun Zhang
In this article, carbazole-grafted methacrylic polysiloxane (MA-CZ-PDMS) macromonomer was synthesized and its structure was confirmed by proton nuclear magnetic resonance ( 1 H NMR). The polysiloxane macromonomer can homogeneously copolymerize with methyl methacrylate (MMA) to prepare transparent and foldable carbazole-grafted polysiloxane-poly(methyl methacrylate) (PDMS-PMMA) membranes with a high refractive index (RI). The membranes were characterized by light transmittance, RI value, and dynamic mechanical thermal analysis (DMTA). The results indicated that the carbazole-grafted PDMS-PMMA membranes had excellent light transmittance that decreased slightly with increasing carbazole-grafted polysiloxane content. Incorporation of carbazole-grafted polysiloxane in the materials improved its RI value; however decreased the glass transmission temperature ( T g ) that can be adjusted to less than 30°C, enable the membrane foldable at room temperature. The data demonstrate that the carbazole-grafted PDMS-PMMA membranes have a potential application as high RI intraocular lens (IOL) suitable for implantation by minimally invasive surgery. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42491.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 132
·期 36
·
IF 1.768
Hengnong Li,Chongbo Liu,Bing Dai,Xinghua Tang,Z. John Zhang,Zhiqiang Xiong,Xiaoming Liu
Four chiral poly Schiff bases were synthesized via polycondensation between l- lysine and p-benzoquinone, 1,4-naphthoquinone, dibenzoyl, and 2,3-butanedione, respectively. Subsequently, the silver coordination polymers of the chiral poly Schiff base were prepared upon silver ions coordinating with the chiral poly Schiff bases. The structures of the polymers were characterized with IR, UV-vis, GPC, elemental analysis, and optical activity analysis. The properties of polymers were studied through conductivity testing and electromagnetic parameter testing. The results show that they own good electrical conductvities, and the electrical conductivity of chiral poly-( l- lysine(2,3-butanedione)) Schiff base silver complex can reach 3.7 × 10 2 S/cm. The electromagnetic wave absorption properties of four silver complexes were calculated using transmission line theory, the maximum reflection loss of chiral poly-( l- lysine(p-benzoquinone)) Schiff base silver complex can reach −45.9 dB at a thickness of 5 mm, while that of achiral poly-( dl -lysine(p-benzoquinone)) Schiff base silver complex is −20.1 dB at a thickness of 5 mm. The enhanced microwave absorbing properties were attributed to the chiral feature. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42498.
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