The influence of polymer surface-protein binding affinity on protein ion signals in matrix-assisted laser desorption/ionization (MALDI) mass spectrometry is examined. The surfaces of poly(vinylidene fluoride) and poly(ethylene terephthalate) polymer substrates are modified by pulsed rf plasma deposition of allylamine. By varying the on/off duty cycle of the pulsed rf plasma, the polymer substra...

A series of glass fiber-reinforced and rubber-toughened poly(ethylene terephthalate) hybrid composites were twin-screw extrusion compounded with varying total and relative concentrations of a reactive terpolymer of poly(ethylene-co-methyl acrylate-co-glycidyl methacrylate) (E-MA-GMA) as the elastomeric impact modifier (10-1520 wt.%) and short glass fiber – SGF (20-25-30 wt.%). Haake torque rheo...

Carbon nanotubes (CNTs) with hollow nanochannels have attracted much attention in preparing high-performance water treatment membranes. In this paper, the grafting polymer chains, including alkynyl terminated poly(methyl methacrylate) methacrylate (PMMA) single chain and PMMA-b-poly (ethylene glycol) [P(PEGMA)] diblock molecular were synthesized by reversible addition-fragmentation transfer (RA...

Interpolymer complexation is associated with the formation of hydrogen bonds between pendent and/or grafted groups of a single polymer or copolymers. The degree of complexation can be described theoretically in terms of complexation/decomplexation equilibrium characteristics. Graft copolymer networks of poly(methacrylic acid-g-ethylene glycol) were prepared by free radical solution polymerizati...

The kinetics of structural relaxation and crystallization of poly(ethylene terephthalate) (PET) is studied. It is demonstrated that the activation energy depends strongly on fictive temperature Tf . The dependence of the glass transition temperature Tg on the heating rate q + is investigated for samples that were previously cooled down at a rate q = 12.5 K/min. Angell et al [1] compare the ther...

16 Ellen Wohlfart Nanopatterning of Poly(ethylene terephthalate) by Plasma Etching Institute of Materials Science, University of Stuttgart and Max Planck Institute for Metals Research, Stuttgart, 2010 179 pages, 84 figures, 12 tables Abstract: Nano and microstructured surfaces found on shark skins, lotus plants, moth eyes or gecko feet can reduce flow resistance, generate self-cleaning surfaces...

A set of novel biocompatible aliphatic–aromatic nanocomposites, including numerous acrylic acid-grafted poly(butylene carbonate-co-terephthalate) (g-PBCT) and organically-modified layered zinc phenylphosphonate (m-PPZn), were successfully synthesized via polycondensation transesterification. primary covalent linkage was produced between the polymer inorganic reinforcements. Fourier transform in...

Self-reinforced poly(ethylene terephthalate) (PET) composites prepared by using a modified film-stacking technique were examined in this study. The starting materials included a high tenacity PET yarn (reinforcement) and a low melting temperature biodegradable polyester resin (matrix), both of which differ in their melting temperatures with a value of 56°C. This experiment produced composite sh...

The dielectric loss spectra of a series of copolyesters of poly(ethylene terephthalate) and poly(ethylene isophthalate) have been measured as a function of temperature in a broad frequency range (10(-1)-10(9) Hz). By these measurements, the merging of the two relevant relaxations alpha and beta has been studied. The beta processes exhibit a complex temperature dependence, showing a clear Arrhen...

Poly(styrene-co-maleic anhydride)s were modified with poly(propylene oxide (PO)-co-ethylene oxide (EO)) side chains (Jeffamine) with different EO/PO molar ratios, varying between 0.11 and 3.60. These copolymers were then further functionalized with a β-mercapto ketone of δ-damascone. The obtained poly(maleic acid monoamide)-based β-mercapto ketones were then studied as delivery systems for the ...