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2 edition of Molecular and environmental aspects of latex film formation. found in the catalog.

Molecular and environmental aspects of latex film formation.

Jianrong Feng

Molecular and environmental aspects of latex film formation.

  • 25 Want to read
  • 31 Currently reading

Published .
Written in English


The Physical Object
Pagination189 leaves.
Number of Pages189
ID Numbers
Open LibraryOL18970765M
ISBN 100612282783

“Latex Preparation by Direct Emulsification and Polymerization in Miniemulsions”, Dow Corning Corporation, Midland, Michigan, USA, Septem “Theoretical Aspects of Developing Latex Particle Morphology”, Invited Keynote,7 th International Conference on Surface and Colloid Science, Compiegne, France, July , physical properties with latex film structure on a microscopic scale. The images obtained for the film prepared via the seed/swell process indicated microstructure and rather complete coalescence. Voids or gaps between latex particles were qualitatively smaller than in the other films, all ofwhich led to an increase in 'the mechanical film strength. The purpose of this chapter is to present the state of the art for using recycled polymeric materials as effective corrosion inhibitors for metals in different corrosive solutions. Initially, the chapter provides the information about corrosion definition, rust formation, and corrosion costs. The chapter gives comprehensive picture about the standard practices for corrosion control.   ALEXANDRIA, VA - Emulsion Polymers Consulting and Education LLC is presenting a three-day workshop April , , in Alexandria, VA. The workshop, “Latex Film Formation,” will present the fundamental aspects of latex film formation. The removal of water from latex-based coatings causes the particles to pack together, deform and coalesce in distinctive steps in order to .


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Molecular and environmental aspects of latex film formation. by Jianrong Feng Download PDF EPUB FB2

This book has emerged out of our long-time research interests on the topic of latex film formation. Over the years we have built up a repertoire of slides used in conference presentations, short courses Molecular and environmental aspects of latex film formation.

book tutorials on the topic. The story presented in this book has thereby taken shape as it has. Latex film formation induced by solvent vapor: A photon transmission study. Composite Interfaces8 (1), DOI: / Õnder Pekcan, Ertan Arda.

Molecular weight effect on void closure and packing at different annealing temperatures during film formation from hard latex by:   Materials Science and Enginee ring, 21 10 l- Reports: A Review Journal Film formation of latex Joseph L.

Keddie * Department of Physics, University of Surrey, GuiIdford GU2 5XH, United Kingdom Received 28 June I; accepted 12 May Abstract Latex film formation, the process by which an aqueous dispersion of polymer particles is transformed into a continuous Cited by: ABSTRACT VARIES ASPECTS OF LATEX FILM FORMATION IN THE PRESENCE OF ADDITIVES Ewa Emilia Odrobina, Ph.D.

Thesis () Department of Chemistry, University of Toronto This thesis examines the interaction of small macromolecules, like surfactants andAuthor: Ewa Odrobina. An environmental scanning electron microscopy examination of the film formation mechanism of novel acrylic latex. Colloids and Surfaces A: Physicochemical and Engineering Aspects(), Cited by: The diffusion of polymer molecules across an interface is an important topic in polymer physics.

Measuring this diffusion process requires a labeling experiment so that the mixing of otherwise identical molecules can be followed. Here we examine the use of nonradiative energy transfer to follow the interdiffusion of polymer molecules during the annealing of latex films.

An overview of polymer latex film formation and properties environmental impacts. Although greater insight has been shown by the use of modern low-to-moderate molecular weights prepared by step growth polymerisation and then dispersed in water, can have advantages of toughness in relation to film.

The aim of this work was therefore to characterise the degradation of a case study polymeric latex film under realistic conditions. To do this, outdoor microcosms were used so that the formation and subsequent degradation of the polymer transformation products could be monitored over time under natural cycles of sunlight and temperature.

We review advances in the design and development of functional latex particles that can be used to form crosslinked coatings. Our emphasis is on understanding fundamental principles, of the formation and aging of latex films, of crosslinking of polymer films, of the reaction mechanisms that lead to bond formation, and of the competition between bond formation and polymer diffusion in latex films.

Wedescribe energy transfer (ET)measurements to follow polymer diffusion, as well as oscillatory dynamic mechanical measurements and tensile measurements, on films prepared from structured and unstructured latex particles consisting of a copolymer of butyl methacrylate and butyl acrylate with a Tg of 20°C.

Structure was introduced in the form of a low level (1 mol%) of crosslinking, using. Kalin I. Dragnevski, Athene M. Donald, An environmental scanning electron microscopy examination of the film formation mechanism of novel acrylic latex, Colloids and Surfaces A: Physicochemical and Engineering Aspects, /fa, (), ().

This book has emerged out of our long-time research interests on the topic of latex film formation. Over the years we have built up a repertoire of slides used in conference presentations, short courses and tutorials on the topic.

The story presented in this book has thereby taken shape as it has been told and re-told to a mix of academic and industrial audiences. “Molecular Aspects of Interdiffusion and Tensile Strength Development During Polystyrene Latex Film Formation”, (Polymer Sci.

& Eng.),Kyung Don Kim. “Particle Size Sensor Design and Application”, (Polymer Sci. & Eng.),Jaidev Venkatesan. The possibility of modifying film formation behavior of acrylic dispersions with oligomers was studied by synthesizing hybrid polymer particles consisting of a high molecular weigh (high-M) polymer and an oligomer with the same composition.

Oligomers with lower molecular weight are more efficient as diffusion promoters and. Film formation from a latex • Film formation from a latex is commonly divided into three steps. • STEP 1: Firstly, after application of these coatings to a non-porous substrate, water and organic co- solvents begin to be lost by evaporation, the solids.

Fourteen papers cover three areas of film formation: Aspects of film formation mechanism, film property development in thermoplastic and crosslinkable systems, and the morphology and film structure of the resulting films. Advanced instrumental measurements are used to define morphology and determine unique film structures as well as to provide input into models of the film formation process.

Molecular aspects of latex film formation: An energy-transfer study. Article. This process, also known as latex film formation, 3, 4 environmental scanning electron microscopy, 5 atomic.

From the reviews: "The book demonstrates that there are basically four stages in the process of latex film formation. These are water loss, close packing of particles, deformation of particles leading to optical clarity in a dodecahedral structure (honeycomb) and, finally, interdiffusion and coalescence leading to a homogenous film.

for the latex technologist, it will be of interest in the. Among this, Förster resonance energy transfer (FRET) has been widely used [46,54] to study the effects of different factors on latex film formation, such as temperature, composition, moisture, coalescing aids [58–61], polar groups at the latex surface [62,63] and the presence of filler particles [21,27,64].

A film from one set of samples is similar in molecular weight to that studied by small angle neutron scattering (SANS) [K. Hahn, G. Ley, H. Schuller, and R.

Oberthur, Colloid Polym. Sci. ()]. the fundamental aspects of latex film formation. The removal of water from latex based coatings causes the particles to pack together, deform and coalesce in distinctive steps in order to form a cohesive film with good properties.

Surfactants and other non-volatile materials added to the latex. ISBN: OCLC Number: Description: viii, pages: illustrations ; 24 cm. Contents: Drying modes of polymer colloids / Y. Holl [and others] --On capillary forces and stress in drying latex coating / L.A.

Pekurovsky and L.E. Scriven --Mobility and molecular interactions during latex film formation / Yaqiu Zhao and Marek W. Urban --Molecular weight effects on. Figure 1 showed the water evaporation rates (the slopes) from the beginning of the film formation process of P(BA/St) latex under different temperatures.

For the water-borne P(BA/St) copolymer, the water evaporation rate of the water-borne P(BA/St) film formation had initially decreasing rate and then a linear rate and finally reached a near zero rate, as shown in Figure 1 for the film formed.

Surface aspects of the coalescence and film formation for bulk films and dense monolayers have also been studied including the effects of surfactants.

However, in many practical applications, including most paper coatings, latex is present in concentrations that are too small for latex-latex. Keywords: Polymer latex; Film formation; ESEM 1.

Introduction Polymer lattices, with their wide range of applications, have been the subject of many theoretical and experimental stud-ies. When used for its traditional applications, i.e. as paint or adhesive, the latex is applied in its wet state to a surface and.

We review advances in the design and development of functional latex particles that can be used to form crosslinked coatings. Our emphasis is on understanding fundamental principles, of the formation and aging of latex films, of crosslinking of polymer films, of the reaction mechanisms that lead to bond formation, and of the competition between bond formation and polymer diffusion in latex films.

The compatibility of graphene oxide with its dispersion medium (polymer) plays a critical role in the formation of nanocomposite materials with significant property improvements. Environmentally friendly miniemulsion polymerization, which allows a formation of nanoencapsulation in an aqueous phase and high molecular weight polymer/composite production is one promising method.

Unless stated otherwise, film formation was in still air at a temperature of 22[degrees]C. Characterization of surface residues evolved during latex film formation The solubility of the surface residue on latex films was established by probing its solubility by comparing AFM scans before and after rinsing with water.

The Encyclopedia of Surface and Colloid Scienceaspects of chemistry, materials sciences and engineering, biology, physics, computer sciences, and applied mathematics. This new edition discusses important advancements made in the last decade or so, namely, the understanding of the fundamental theories in colloid and surface science, the.

Published in Journal of Coatings Technology Research () 5, requirements. Here, we consider the effects of several inter-related aspects of film formation 4 on final film structure and properties.

The incorporation of crosslinking chemistry in waterborne coatings is recognised to. Drying modes of polymer colloids / Y. Holl [and others] --On capillary forces and stress in drying latex coating / L.A. Pekurovsky and L.E. Scriven --Mobility and molecular interactions during latex film formation / Yaqiu Zhao and Marek W.

Urban --Molecular weight effects on the film formation of latex and on surfactant distribution and. Environmental scanning electron microscopy (ESEM) and complementary methods were employed to study the time dependent film formation of a latex dispersion in water and cement pore solution.

First, a model carboxylated styrene/n-butyl acrylate latex dispersion possessing a minimum film forming temperature (MFFT) of 18 {sup o}C was synthesized in. This book covers the fundamental chemistry of latices and their applications in adhesives.

These water-based latices are playing a far greater role in many applications and match the growing concern over environmental safety. This book is available separately or as part of a 3-volume set and offers an insight into the advances and developments in this field.

It is well known that viscosity, self-diffusion coefficient and glass transition temperature are a strong function of molecular weight (MW). Here we report the film formation characteristics of an acrylic (BMA/MMA/MAA) latex as a function of its average MW, considering four molecular weights ranging from 7, toDaltons.

As a means of taking into account the lower glass transition. coalescents in water-borne latex systems. DOWANOL™ DPnB glycol ether combines a number of properties that contribute to very high latex film quality: 1) high polymer plasticizing efficiency, 2) large molecular size and therefore greater polymer mobility contribution, 3) strong partitioning to the polymer phase, and 4) relatively slow.

Waterborne latex and coatings 3 Latex film formation 5 Drying inhomogeneity 6 Horizontal drying front and vertical packing 7 Cracks, detachment, shear bands and skin layer formation 8 Objectives 10 References 13 2 Chapter 2 Synthesis and Characterizations of Model Latex Systems   The film formation process from colloidal latex dispersion is a key to obtaining high performance coatings.

In this study the simplest model of evaporation process has been applied and the influence of drying rate and viscosity of continuous medium has been studied by.

Film formation When a latex dispersion is placed on a substrate and evaporation occurs a continuous film is formed under appropriate conditions. A thorough understanding of the drying behavior is useful in a lot of ways, since properties of the latex film are determined during film formation.

The quality of the film depends on the surroundings. For latex systems containing a single polymer composition, e.g. acrylic latexes, the latex film formation process has been extensively studied, and it can be considered that its fundamental steps are well established, even if some minor points of controversy remain The standard model for latex film formation involves three steps: (1.

Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more. Fundamentals of latex film formation: processes and. From the reviews: “The book demonstrates that there are basically four stages in the process of latex film formation.

These are water loss, close packing of particles, deformation of particles leading to optical clarity in a dodecahedral structure (honeycomb) and, finally, interdiffusion and coalescence leading to a homogenous film. for the latex technologist, it will be of interest in Reviews: 1.Polyethylene, light, versatile synthetic resin made from the polymerization of ethylene.

Polyethylene is a member of the important family of polyolefin resins. It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and fuel tanks.Nicola Kessel, Derek R.

Illsley, Joseph L. Keddie, The diacetone acrylamide crosslinking reaction and its influence on the film formation of an acrylic latex, Journal of Coatings Technology and Research, /s, 5, 3, (), ().