JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 134
·期 12
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IF 1.866
Ling Zhang,Minjie Tang,Jinwei Zhang,Pengsheng Zhang,Jianhua Zhang,Liandong Deng,Cunguo Lin,Anjie Dong
An antifouling surface is highly desirable for many biomedical applications. In this study, poly(vinyl chloride) (PVC) films were endowed with the improved properties of resisting nonspecific protein adsorption and platelet adhesion simply through being coated with a kind of mixed-charge zwitterionic polymer, poly(3-sulfopropyl methacrylate–methacrylatoethyl trimethyl ammonium chloride–glycidyl methacrylate) (PSTG), with random moieties of negatively charged 3-sulfopropyl methacrylate potassium, positively charged [2-(methacryloyloxy)-ethyl] trimethylammonium chloride, and glycidyl methacrylate. The PSTG-grafted PVC films were formed by the simple immersion of an amino-functionalized PVC film into a PSTG solution. A grafting density of 220.84 µg/cm 2 of PSTG4-grafted PVC film was successfully obtained. The PSTG4-grafted PVC film showed a lower contact angle (37.5 °) than the ungrafted PVC film (98.3 °). The in vitro protein adsorption results show that the bovine serum albumin adsorption amount decreased 6.72 µg/cm 2 in the case of the PSTG4-grafted PVC film, whereas that on the ungrafted PVC film was 28.54 µg/cm 2 . So, PSTG-grafted PVC films could be promising materials for medical devices. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44632.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 24
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IF 1.866
Qian-Zhi Zhang,Bing-Bing Li,De Sun,Li-Jun Zhang,Da-Yong Li,Ping Yang
Water-soluble hyperbranched polyester (WHBP) was synthesized through the esterification reaction of the fourth generation hyperbranched polyester and maleic anhydride. A novel cross-linked WHBP/PVA membrane was prepared by adding WHBP into poly(vinyl alcohol) (PVA) solution with glutaraldehyde as the cross-linker. WHBP was characterized by Nuclear Magnetic Resonance and Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR), while WHBP/PVA membranes were characterized by ATR-FTIR, X-ray Diffraction, Scanning Electron Microscopy, Thermogravimetric Analysis, mechanical capacity, and water contact angle. Testing results showed that maleic anhydride was grafted on the surface of WHBP; compared with PVA membrane, WHBP/PVA membrane had lower crystallinity, weaker mechanical strength, higher hydrophilicity, and better thermal stability. Sorption and diffusion behaviors of n -butanol and water in WHBP/PVA membrane were investigated; pervaporation performances of WHBP/PVA membrane were studied through the dehydration of the 90 wt % n -butanol aqueous solution at 40°C. With an increase of the WHBP content from 0 to 30 wt %, both n -butanol uptake and n -butanol diffusion coefficient first decreased then increased; n -butanol flux first decreased from 10 to 2 g·m −2 ·h −1 then increased to 213 g·m −2 ·h −1 ; both sorption selectivity and diffusion selectivity first increased then decreased; separation factor first increased from 88 to 1309 then decreased to 16. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43533.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 24
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IF 1.866
Sara Riaz,Wang Feng,Ather Farooq Khan,Mian Hasnain Nawaz
In this article, we detail the sonication-induced self-assembly of polymeric porphyrin and fullerenes into distinct nanorings in solution form. The formation of these trenchant superstructures was the result of the delicate choice of different assembly protocols, solvents, and polymeric tails associated with porphyrin and fullerene. In this study, the sonication supposedly directed the lateral aggregation into uniform ring formation. The sonication time was found to be the key parameter in ring formation. Furthermore, the flexibility of polymeric arms and electronic interactions of porphyrin–fullerene gave rise to synergistically enhanced molecular interactions, and this resulted in discrete morphologies. Key optical data, including the absorption maxima of the complexes, and microscopic studies attested to the nature and morphology of the self-assembled complexes. This introduction of polymeric arms and sonication protocols in the porphyrin self-assembly was expected to allow the easy formation of diverse morphologies. Because of the facile fabrication process and uniform morphology, the resulting composite architectures might show promising applications in drug-delivery and advance materials. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43537.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 24
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IF 1.866
Xiaoyan Zhou,Anhua Lin,Xinxin Yuan,Hui Li,Dong Ma,Wei Xue
For insulin delivery, many reported glucose-sensitive materials are designed to response to the glucose in the blood. However, few particular studies on their blood compatibility have been reported. In this article, for controlled insulin release in diabetes therapy, a glucose-sensitive nanogel was prepared through thermally initiated precipitation polymerization using the aminophenylboronic acid-containing monomer to copolymerize with methacrylic acid. The obtained nanogels showed the uniform and spheroidal morphology as observed by SEM, and their sizes in aqueous solution are dependent on the concentration of glucose. Through in vitro and in vivo insulin release tests, it was found that nanogels showed the glucose-dependent insulin release and prolonged effect of lowing blood glucose level. The blood compatibility of nanogels has also been explored through various assays including the hemolysis, activated partial thromboplastin time, prothrombin time as well as the thromboelastography. All results indicated that the obtained glucose-sensitive nanogels showed good blood safety. Moreover, their low cytotoxicity suggested a potential application in diabetes therapy. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43504.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 22
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IF 1.866
Zhidong Ren,Yuanrong Cheng,Yan Li,Fei Xiao
Three novel bismaleimide monomers (MBA-BMI, EBA-BMI, and PBA-BMI) with unsymmetrical backbone and different pendant groups were synthesized using asymmetric diamine and maleic anhydride as the precursors. The prepared bismaleimide monomers show good solubility in common organic solvents such as acetone and tetrahydrofuran. The EBA-BMI melt treated at 180 °C also shows low viscosity about 190–934 mPa s at the temperature range of 160–139 °C below its melting point (166 °C). In addition to the good processability, all three cured bismaleimides show high storage moduli at high temperatures (2.0 GPa at 400 °C), high glass transition temperatures over 400 °C, and good thermal stability with the 5% weight loss temperatures around 470 °C under nitrogen atmosphere. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43491.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 21
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IF 1.866
Xiaobing Hu
In this article, two novel benzobisthiazole-containing hyperbranched polyamides with different end groups were synthesized, by adjusting the feed molar ratio of the reaction monomers, using 1,3,5-benzenetricarboxylic acid and 2,6-diaminobenzo[1,2-d:4,5-d']bisthiazole as monomers, polyphosphoric acid as solvent, and catalyst. The molecular structure of the synthesized hyperbranched polymers were speculated by 1 H-nuclear magnetic resonance (NMR) analysis, 13 C-NMR analysis, and Fourier transform infrared analysis. The M n , M w , and DB of the carboxyl terminated polymer HB-COOH are 3264 g/mol, 3350 g/mol, and 44.1%, respectively, with a polydispersity of 1.03. The M n , M w , and DB of amino terminated polymer HB-NH 2 are 3340 g/mol, 3420 g/mol, and 41.7%, respectively, with a polydispersity of 1.02. The thermal stability of HB-NH 2 was higher than HB-COOH in the range of 30 °C–800 °C.These two benzobisthiazole-containing hyperbranched polyamides were completely amorphous and soluble in DMSO. Their DMSO solutions exhibited strong blue fluorescence. The fluorescent intensity of HB-NH 2 was higher than HB-COOH. The prepared polymers were potential useful in the area of blue light emitting and display. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43453.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 20
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IF 1.866
Wanpeng Ma,Wei Zhang,Yang Zhao,Helong Yu
A self-healing material was developed on the basis of a biological system. The self-healing epoxy resin, which incorporated microcapsules filled with ethyl phenylacetate (EPA), was investigated. The microcapsules were prepared by an in situ polymerization method. The microcapsule-formation process was monitored by optical microscopy, and the surface morphology was observed by scanning electron microscopy (SEM). The self-healing performance of the epoxy resin was assessed by manual and in situ healing experiments. We investigated the effects of the healing time, amount of EPA, and degree of curing of matrix on the healing performance by manually injecting EPA into the crack plane. The maximum healing efficiency was obtained within 24 h. The swelling curve was overlaid onto the healed load plot; this indicated that crack healing was achieved as a result of solvent diffusion. The healing load reached the maximum value when the amount of EPA was 0.5 μL and was capable of filling the crack volume. Moreover, the healing performance was related to the degree of swelling. The in situ healing efficiency was dependent on the microcapsule concentration. The fracture toughness could be fully restored when the microcapsule concentration was 10%. Finally, the crack interface was analyzed with SEM. The results show that the fracture line was difficult to detect, and this suggested complete crack healing by EPA. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43430.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 20
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IF 1.866
Conglu Zhang,Lei Zhu,Wei Li,Xin Zheng
A porous magnetic quaternary chitosan salt (pre-CS/EPTAC/Fe 3 O 4 ) was successfully prepared via a kind of novel method of preadsorption and desorption. The physicochemical properties of pre-CS/EPTAC/Fe 3 O 4 were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and vibrating sample magnetometry. The adsorption of pre-CS/EPTAC/Fe 3 O 4 for methyl orange (MO) showed much higher dye uptakes compared with Npre-CS/EPTAC/Fe 3 O 4 without the preadsorption and desorption of MO, and the maximum adsorption capability for MO was 486.1 mg/g. Adsorption isotherms and adsorption kinetics were well fitted by the Freundlich isotherm model and the pseudo-second order model, respectively. Thermodynamic parameters, such as the standard free energy change, enthalpy change, and entropy change, were also calculated; this indicated that the adsorption was spontaneous and exothermic. The introduction of MO preadsorption and desorption into the process of preparation improved not only the adsorption of MO but also the adsorption of acid red 1 and orange G. Furthermore, pre-CS/EPTAC/Fe 3 O 4 particles could be easily regenerated and remained almost constant (98.5%) for six cycles of adsorption and desorption. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43448
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 20
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IF 1.866
Shaoping Qian,Kuichuan Sheng,Wenchao Yao,Hui Yu
In this study, ultrafine bamboo-char (BC) was introduced into poly(lactic acid) (PLA) matrix to improve mechanical and thermal properties of PLA based biodegradable composites. PLA/BC biocomposites were fabricated with different BC contents by weight. Uniform dispersion of BC in the PLA matrix and good interaction via physical and chemical interfacial interlocks were achieved. The maximum tensile strength and tensile modulus values of 14.03 MPa and 557.74 MPa were obtained when 30% BC was used. Impact strength of the biocomposite with 30% BC was increased by 160%, compared to that of pure PLA. DSC analysis illustrated that PLA/BC biocomposites had a better thermal property. Crystallization temperature decreased and maximal crystallinity of 30.30% was observed with 30% BC load. We did not notice significant thermal degradation differences between biocomposites with different BC loadings from TGA. Better water resistance was obtained with the addition of BC. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43425.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 20
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IF 1.866
Abbas Hasan Faris,Afidah Abdul Rahim,Mohamad Nasir Mohamad Ibrahim,Adel Mustafa Alkurdi,Irfan Shah
In this study, a green adhesive from renewable lignin and tannin was developed with polyethylenimine (PEI) with a method to improve the water resistance of the lignin/tannin adhesive. Lignin polyols were prepared through the liquefaction of oil-palm empty fruit bunches. The characteristics of the adhesive samples were compared with those of a commercial phenol–formaldehyde resin. Three plywood specimens bonded with the new adhesive showed a very high tensile strength (63.04 MPa) and were very water resistant. The effect of the solid content of the adhesives on the tensile strength and gel time and various weight ratios of PEI on the tensile strength and water resistance of the plywood specimens were evaluated. Thermal stability tests revealed that the lignin polyol–tannin/PEI adhesives had a high heat resistance (360 °C). © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43437.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 39
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IF 1.866
Pengfei Du,Haiyan Jia,Qinghua Chen,Zhen Zheng,Xinling Wang,Denglong Chen
Diels–Alder (DA) reactions between furan and maleimide have been widely applied in thermally remendable polymeric materials. Crosslinked polyurethane with DA adducts exhibited much better mechanical properties than linear polyurethane with DA adducts. However, the highly crosslinked polyurethane needs a higher temperature and a longer healing time. This will increase the possibility of side reactions proceeding during the healing procedure. In this paper, slightly crosslinked polyurethane with DA adducts was synthesized by incorporating trimethylolpropane into linear polyurethane with DA adducts. The structure of the intermediate and final products was characterized by Fourier transform infrared spectroscopy, 1 H-NMR, and differential scanning calorimetry, confirming that the synthesizing process proceeded successfully. The images from the polarizing optical microscope demonstrated that the final product with slight crosslinking needed less time and a lower healing temperature to complete the healing procedure. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43971.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 39
·
IF 1.866
Jianjun Zhou,Jin Chen,Ming He,Jianfeng Yao
Cellulose nanocrystals (CNCs) were used as a sustainable additive to improve the hydrophilicity, permeability, antifouling, and mechanical properties of blend membranes. Different CNC loadings (0–1.2 wt %) in cellulose acetate (CA) membranes were studied. The blend membranes were prepared by a phase-inversion process, and their chemical structure and morphological properties were characterized by attenuated total reflectance–Fourier transform infrared spectroscopy, scanning electron microscopy, porosity, and mean pore size and contact angle measurement. The blend membranes became more porous and more interconnected after the addition of CNCs. The thickness of the top layer decreased and a few large holes in the porous substrate appeared with increasing CNC loading. In comparison with the pure CA membranes, the pure water flux of the blend membranes increased with increasing CNC loading. It reaches a maximum value of 76 L m −2 h −1 when the CNC loading was 0.5 wt %. The antifouling properties of the CA membrane were significantly improved after the addition of CNCs, and the flux recovery ratio value increased to 68% with the addition of 0.5 wt % CNCs. In comparison with that of the pure CA membranes, the tensile strength of the composite membranes increased by 47%. This study demonstrated the importance of using sustainable CNCs to achieve great improvements in the physical and chemical performance of CA ultrafiltration membranes and provided an efficient method for preparing high-performance membranes. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43946.
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高影响因子
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