Recently added articles from Polymer Engineering and Science:
Facile synthesis of one-to-one copy of monomer droplet to latex particle via equilibrium stabilized miniemulsion polymerization.(Report)
Jun 01, 2009; ... INTRODUCTION In miniemulsion polymerization, the size of monomer droplets is substantially emulsified to a nanometer range of around 50-500 nm (10 by varieties of homogenization processes such as ultrasonication, (2-4) high-pressure homogenizer (5), (6) and other high shear ...
Rheological behavior of gel-filled raw natural rubber and styrene-butadiene rubber with reference to gel-matrix intermixing.(Report)
Jun 01, 2009; ... INTRODUCTION Polymers are rarely used in their pristine form for most applications. They are often mixed with fillers to improve their processability and mechanical strength and to reduce cost. For this purpose, many rubbers are filled with various fillers, such as carbon ...
Viscoelasticity and mechanical properties of reactive PVC plastisols.(polyvinyl chloride)(Report)
Jun 01, 2009; ... INTRODUCTION Polyvinyl chloride) (PVC) is a well known versatile commodity thermoplastic, whose production and consumption worldwide is second to other plastics (1). PVC is generally known to have the advantages of low ingredient cost, wide processing versatility, high ...
A new fluidized bed coating process via photo-initiated cationic polymerization.(Report)
Jun 01, 2009; ... INTRODUCTION Fluidized bed coating is one of those particle coating techniques which have become increasingly important for industrial applications. Its principles and practice have been reviewed in recent papers (1-3). In a typical fluidized bed, particles are suspended and ...
POLYCHAR 16 special issue.(Preface)(POLYCHAR 16: World Forum on Advanced Materials)(Brief article)
May 01, 2009; ... Uttar Pradesh, February 2008 The POLYCHAR 16: World Forum on Advanced Materials, organized by the University of Lucknow was held from 17 to 21 February 2008 in the capital of the state of Uttar Pradesh, India. The conference was sponsored by the Polymer Division of the ...
Relaxation map of PETg-montmorillonite composites: nanofiller concentration influence on [alpha] and [beta] relaxation processes.(polyethylene-1.4-cyclohexylenedimethylene terephthalate glycol)
May 01, 2009; ... INTRODUCTION A glassy structure is obtained when a liquid is cooled fast enough to avoid the expected crystallization. The glassy nature of a material is revealed by a transition occurring at the glass transition temperature, noticed [T.sub.g]. At the glass transition, a ...
Synthesis, characterization, and thermal properties of phosphorylated chitin for biomedical applications.(Report)
May 01, 2009; ... INTRODUCTION Chitin, a natural polymer, is the second most abundant organic resource on the earth next to cellulose. It is an exoskeleton of crustacean, cuticle of insects, and the cell wall of fungi. Chitin is structurally similar to cellulose, but it is an amino polysaccharide ...
Vibrational dynamics of poly([beta]-hydroxybutyrate)-[alpha] form.(Report)
May 01, 2009; ... INTRODUCTION Poly([beta]-hydroxybutyrate) (PHB) [(-CH([CH.sub.3])-[CH.sub.2]-COO-).sub.n] (see Fig. 1) is one of the well-studied bacterial polyesters in the polyhydroxyalkanoates (PHA) family (1-3). It is an optically active polymer produced by a bacterial fermentation process ...
Nonlinear optical studies of newly synthesized polythiophenes containing pyridine and 1, 3, 4-oxadiazole units.(Report)
May 01, 2009; ... INTRODUCTION Nonlinear optics has drawn increasing attention from researchers because of its potential applications in optical switching, optical data storage, optical communications, and eye and sensor protection (1-3). The emphasis has been on identifying new materials those ...
Effect of the type of carbon nanotubes on tribological properties of Polyamide 6.(Report)
May 01, 2009; ... INTRODUCTION Polymer tribology seems to be an underappreciated area; however, Rabinowicz has demonstrated the importance of tribology, including from the point of view of financial welling of the industry (1). Tribology deals with the interaction of surfaces in movement, ...
The effect of injection molding conditions on the morphology of polymer structural foams.(Report)
May 01, 2009; ... INTRODUCTION Injection molding of structural foam is one of the most suitable approaches to produce parts having a foamed core sandwiched between two unfoamed skins. This structure is known to have higher specific mechanical properties (strength to weight ratio) as well as lower ...
Use of porous ion exchange film for glucose sensing.(Report)
May 01, 2009; ... INTRODUCTION The ability to monitor a low level of various compounds is crucial in environmental science and in clinical practice. Objectives of biosensor development include portability, high detection sensitivity (i.e., at least to the micromolar level), rapid detection, and ...
Investigation of melt extensional deformation of ethylene-vinyl acetate nanocomposites using small-angle light scattering.(Report)
May 01, 2009; ... INTRODUCTION The primary mode of polymer melt deformation for many decades was simple shear; however, in the last 2 to 3 decades, the importance of extensional deformation has been well recognized (1), (2). Raible et al. (3) contends that there are two important reasons for the ...
Effect of filling stage on the cooling system design of injection molding.(Report)
May 01, 2009; ... INTRODUCTION The demand on plastic parts is increasing day by day. Injection molding remains the most popular method for producing precision plastic parts with various shapes and complex geometries at low cost (1). The plastic injection molding process is a cyclic process. There ...
Preparation, characterization, and foaming behavior of poly(lactic acid)/poly(butylene adipate-co-butylene terephthalate) Blend.(Report)
May 01, 2009; ... INTRODUCTION Poly(lactic acid) (PLA) is known as a biodegradable thermoplastic polymer with widely potential applications (1), (2). The interest in environmentally friendly materials has stimulated development of extruded PLA-based foams. Unfortunately, the low melt viscosity ...
Structure and mechanical properties of impact modified poly(butylene terephthalate)/poly(ethylene terephthalate) blends.(Report)
May 01, 2009; ... INTRODUCTION The addition of impact modifiers to notch sensitive polymeric matrices (whether brittle or ductile) is a common strategy to improve their low impact strength, and allows their use in applications that rely on this property (1-33). An undesirable consequence of this ...
Effect of resin compositions on microwave processing and thermophysical properties of benzoxazine-epoxy-phenolic ternary systems filled with silicon carbide (SiC) whisker.(Report)
May 01, 2009; ... INTRODUCTION Polybenzoxazine, a new class of phenolic resins which are widely investigated especially utilization for electronic packaging materials as issued on in several US patents (1-4). Some of the advantages the polymer includes to render high glass transition temperature, ...
Thermal conductivity and mechanical properties of aluminum nitride filled linear low-density polyethylene composites.(Report)
May 01, 2009; ... INTRODUCTION Polymers materials have gained wide applications in different branches of industry because of their low cost, low density, case of forming, chemical inertia, and low thermal conductivity (1). In some cases, however, high thermal conductivity is desirable for ...
Gamma-irradiation effects on polypropylene-based composites with and without an internal lubricant.(Report)
May 01, 2009; ... INTRODUCTION AND SCOPE Gamma irradiation is known to have significant effects on properties of polymers and polymer-containing composites (1-18). At the same time, such irradiation is the most frequently applied method of sterilization, in devices for applications in medicine in ...
In memory of Prof. Robert Simha (1912-2008).(In memoriam)
Apr 01, 2009; ... This issue of Polymer Engineering and Science includes papers from the International Symposium on Polymer Physics, held October 17-18, 2007 at the National Research council Canada in Boucherville, Quebec, on the occasion of Prof. Robert Simha's 95th birthday Sadly, Prof. Simha passed away ...