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Efficient photoinduced In situ preparation of clay/poly(glycidyl methacrylate) nanocomposites using hydrogen‐donor silane

31-Dec-2014 | Khouloud Jlassi, Mémia Benna‐Zayani, Mohamed M. Chehimi, Yusuf Yagci, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Clay/poly(glycidyl methacrylate) nanocomposites (clay/PGMA) were prepared by in situ radical photopolymerization using N,N‐dimethylaminopropyltrimethoxysilane(DMA)‐modified bentonite clay acting as hydrogen donor for benzophenone in solution. This initiating system permits to ...


Fabrication of thermoresponsive, core‐crosslinked micelles based on poly[N‐isopropyl acrylamide‐co‐3‐(trimethoxysilyl)propylmethacrylate]‐b‐poly{N‐[3‐(dimethylamino)propyl]methacrylamide} for the codelivery of doxorubicin and nucleic acid

30-Dec-2014 | Cong Chang, Hong Dan, Li‐Ping Zhang, Ming‐Xiang Chang, Yin‐Feng Sheng, Guo‐Hua Zheng, Xian‐Zheng Zhang, Journal of Applied Polymer Science, 2014

ABSTRACT Thermoresponsive amphiphilic copolymer, poly[N‐isopropyl acrylamide‐co‐3‐(trimethoxysilyl)propylmethacrylate]‐b‐poly{N‐[3‐(dimethylamino)propyl]methacrylamide} with a branched structure was designed and synthesized by consecutive reversible addition–fragmentation chain‐transfer ...


Effect of additives on the melt rheology and thermal degradation of poly[(R)‐3‐hydroxybutyric acid]

30-Dec-2014 | Carlos R. Arza, Patric Jannasch, Peter Johansson, Per Magnusson, Alan Werker, Frans H. J. Maurer, Journal of Applied Polymer Science, 2014

ABSTRACT Thermal degradation of poly[(R)−3‐hydroxybutyric acid] (PHB) during melt mixing results in random chain scission that produces shorter polymer chains containing crotonic and carboxyl end groups. One way of preventing this serious reduction of molar mass is to add agents that react ...


Ion‐transport study in nanocomposite solid polymer electrolytes based on chitosan: Electrical and dielectric analysis

29-Dec-2014 | Shujahadeen B. Aziz, Zul Hazrin Z. Abidin, Journal of Applied Polymer Science, 2014

ABSTRACT In this study, (1.1111 − x)(0.9CS–0.1NaTf)xAl2O3(0.02 ≤ x ≤ 0.1) [where CS is chitosan, NaTf is sodium triflate (NaCF3SO3), and Al2O3 is aluminum oxide] nanocomposite solid polymer electrolyte (SPE) films based on CS were prepared by a solution casting technique. X‐ray diffraction ...


Impact of nanoclay on physicomechanical and thermal analysis of polyvinyl alcohol/fumed silica/clay nanocomposites

26-Dec-2014 | Josephine Chang‐Hui Lai, Md. Rezaur Rahman, Sinin Hamdan, Fui Kiew Liew, Md. Mizanur Rahman, Md. Faruk Hossen, Journal of Applied Polymer Science, 2014

ABSTRACT Polyvinyl alcohol (PVA)/fumed silica/clay nanocomposites are prepared via solution intercalation by exploiting phase separation based on the bridging of particles by polymer chains. PVA/fumed silica/clay nanocomposites are characterized by Fourier transform infrared spectroscopy ...


Antimicrobial N‐halamine coatings synthesized via vapor‐phase assisted polymerization

24-Dec-2014 | Guanghui Xi, Yanlei Xiu, Lu Wang, Xiangdong Liu, Journal of Applied Polymer Science, 2014

ABSTRACT An N‐halamine monomer, 3‐allyl‐5,5‐dimethylhydantoin (ADMH), was synthesized by a Gabriel reaction of 5,5‐dimethylhydantoin and 3‐bromopropene. Antimicrobial coatings of poly[1‐(4,4‐dimethyl‐2,5‐dioxoimidazolidin‐1‐methyl)ethylene] were prepared on plasma‐treated PET fabrics via a ...


Effect of synthesis temperature on characteristics of PNIPAM/alginate IPN hydrogel beads

24-Dec-2014 | Masanori Ochi, Junichi Ida, Tatsushi Matsuyama, Hideo Yamamoto, Journal of Applied Polymer Science, 2014

ABSTRACT Poly(N‐isopropylacrylamide)/alginate interpenetrating polymer network hydrogel beads (IPN beads) were prepared via modified inverse emulsion polymerization, and the effect of the synthesis temperature on the characteristics of the IPN beads was investigated. Varying the synthesis ...


Compatibility of highly sulfated cyclodextrin with electrospray ionization at low nanoliter/minute flow rates and its application to capillary electrophoresis/electrospray ionization mass spectrometric analysis of cathinone derivatives and their optical isomers

23-Dec-2014 | Mehdi Moini, Christopher M. Rollman, Rapid Communications in Mass Spectrometry, 2014

RATIONALE Sodium salts of cyclodextrins are commonly used in capillary electrophoresis/mass spectrometry (CE/MS) analysis of illicit drugs and their optical isomers. To avoid the suppression effect of cyclodextrins under electrospray ionization (ESI), the partial filling technique (PFT) is ...


Effect of annealing on down‐conversion properties of monoclinic Gd2O3:Er3+ nanophosphors

22-Dec-2014 | Raunak Kumar Tamrakar, D. P. Bisen, Kanchan Upadhyay, Luminescence, 2014

ABSTRACT Erbium‐doped nano‐sized Gd2O3 phosphor was prepared by a solution combustion method in the presence of urea as a fuel. The phosphor was characterized by X‐ray diffractometry (XRD), Fourier transform infra‐red spectroscopy, energy dispersive X‐ray analysis (EDX) and transmission ...


Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes

18-Dec-2014 | Ana Sofia Figueiredo, María Guadalupe Sánchez‐Loredo, António Maurício, Manuel F. C. Pereira, Miguel Minhalma, Maria ..., Journal of Applied Polymer Science, 2014

ABSTRACT Cellulose acetate (CA)–silver (Ag) nanocomposite asymmetric membranes were prepared via the wet‐phase inversion method by dispersing polyvinylpirrolydone‐protected Ag nanoparticles in the membrane casting solutions of different compositions. Silver nanoparticles were synthesized ex ...


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