- Polyvinyl alcohol
(PVOH, PVA, or PVAL) is a water-soluble synthetic polymer. Polyvinyl
alcohol has excellent film forming, emulsifying, and adhesive
properties. It is also resistant to oil, grease and solvent. It is
odorless and nontoxic. It has high tensile strength, flexibility, as
well as high oxygen and aroma barrier.
- Unlike most vinyl
polymers, PVA is not prepared by polymerization of the corresponding
monomer. The monomer, vinyl alcohol, almost exclusively exists as the
tautomeric form, acetaldehyde. PVA instead is prepared by partial or
complete hydrolysis of polyvinyl acetate to remove acetate groups.
Sizing is a processing aid applied to rovings and yarns to provide
lubricity and binding action to protect the fibers and assist in
handling. 299 and 399 organic sizing composed of polyvinyl alcohol(PVA)
and additives (plasticizers, lubricants, etc.) is designed for easy
removal by heat cleaning.
- The primary raw
material used in the manufacture of polyvinyl alcohol is vinyl acetate
monomer. It is manufactured by the polymerization of vinyl acetate
followed by partial hydrolysis. The process of hydrolysis is based on
the partial replacement of ester group in vinyl acetate with the
hydroxyl group, and is completed in the presence of aqueous sodium
hydroxide. Following gradual addition of the aqueous saponification
agent. Polyvinyl alcohol is precipitated, washed and dried.
- There are two methods
for preparing a 4% aqueous solution of polyvinyl alcohol, the
conventional heating method and the microwave heating method. The
microwave method is much easier and less time consuming. Once the 4%
polyvinyl alcohol solution is made it will last 6 to 8 weeks. It is a
good idea to store this solution in a refrigerator, as it will support
bacteria growth. It is recommended that tap water be used when making
the polyvinyl alcohol solution. Bacteria will grow much faster in a
polyvinyl alcohol solution that contains distilled water. Polyvinyl
alcohol and its solutions are considered non-toxic.
- Semicrystalline films
of poly(vinyl alcohol) (PVA) were prepared by annealing amorphous PVA
films at temperatures above the glass transition
temperature of 85°C,
thus allowing the macromolecules to form crystallites, which stabilized
the films and made them behave as if they were chemically cross-linked.
Films were prepared by casting a 15% aqueous PVA solution onto glass
slides and annealing them at temperatures ranging from 90 to 120°C at 15
to 90 min.
- PVA is widely used in
freshwater sport fishing. Small bags made from PVA are filled with dry-
or oil-based bait and attached to the hook, or the baited hook is placed
inside the bag and cast into the water. When the bag lands on the lake
or river bottom it breaks down, leaving the hook bait surrounded by
ground bait, pellets etc. This method helps attract fish to the hook
bait, though it does result in dissolved plastic in the water.
- Biodegradable polymer
market in the US has witnessed a series of consolidations over the past
10 years. In 2003 there were more than 7 players in the US Biodegradable
polymer market. The U.S. biodegradable polymer market revenues were
estimated at $27.0 million, corresponding to 22.9 million pounds of unit
shipment. The U.S. biodegradable polymer market revenue is forecast to
grow to $67.8 million in 2010 at a compound annual growth rate (CAGR) of
12.2 percent.
- German chemicals group
BASF has launched two new pharmaceutical film-coating products,
cementing its position in a market estimated to be worth about €200
million and growing at 5 to 6 per cent a year. Last year, BASF launched
Kollicoat IR, the first of a new generation of excipients based on
polyvinyl alcohol-polyethylene glycol copolymer.
- The use of polyvinyl
alcohol (PVA) as a coating agent for food supplements poses no health
risks, according to a recent EFSA investigation. The European
supplements market was estimated to be worth 5.2 billion in 2005, with
growth rate expected to peak at 4.4 percent over this year before
dropping to a steady 4.1 percent for the subsequent five years. By 2011,
the market is predicted to be worth around 6.6 billion.
- Chemicals company
DuPont said Friday its packaging and industrial polymers unit is raising
its worldwide price for its Elvanol polyvinyl alcohol by 8 cents per
pound. The company said high energy, transportation and raw material
costs resulted in the price increase, which are effective June 1, or as
contracts permit. Elvanol polyvinyl alcohol is used in a variety of
industries including textiles, paper, adhesives and films.
- There are over 22
producers worldwide with ~ 1 million tons on the open market in 2002.
Larger producers include Kuraray (Japan) and Celanese (USA) but mainland
China has installed a number of very large production facilities in the
past decade. In 1998, Western Europe has been the major importer of PVA,
so it can be considered as a target market. India and Pakistan can also
be considered as target markets. The domestic demand of PVA is estimated
to be at least 5,000 Tons per annum for the next coming years.
- PVOH demand in Asia
(except China) was almost flat in 2006 as compared with 2005 when the
market plummeted by 10% or so. Moves of PVOH demand appear to be very
erratic, affected by inventories in the distribution channel. In 2007 so
far, there is no sign of PVOH demand increasing significantly. Under
these circumstances, PVOH prices in Asia are not strong at the moment
and remain depressed around $2000/ton cfr for most representative
commodity grades. Prices for big accounts are slightly below $2000/tonb
cfr.
- The combined exports of
China and Taiwan amounted to about 38,700 tons in 2006, and if the
exports are regulated by the anti-dumping problem, these exports must
find out other markets. Due to the growth potential, Asian markets
including the Chinese domestic market should be home for such material.
But, if Chinese producers aggressively increase the production capacity,
the problem may not be so simple.
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General
- Polymers
- Polyvinyl
alcohol
- Polyvinyl Alcohol
Slime
- Information About
Polyvinyl Alcohol
- Biodegradable Plastics
- Polyvinyl Alcohol
- Sizing
-
Rheology and
structure of aqueous bentonite–polyvinyl alcohol
dispersions
- General Information -
Clarisol Polyvinyl Alcohol Films
Process
- Preparation of
Polyvinyl Alcohol and Slime
- Preparation of
polyvinyl alcohol-polyacrylamide composite polymer membrane by
g-irradiation for entrapment of urease
- Preparation and
Characterization of Polyvinyl Alcohol–Gelatin Hydrogel Membranes for
Biomedical Applications
- Preparation of
poly(vinyl acetate) glue
- Polyvinyl Alcohol
Chemical Manufacturing Process
- Polyvinyl alcohol
Recycling in the Process of Sizing Cotton Fibres
- Preparation and
Characterization of Gelatin-Poly(vinyl alcohol) Hydrogels for
Three-Dimensional Cell Culture
Reactions of
Polyvinyl Alcohol with Clay
- Synthesis of Alumina
Pillared Fluorine Micas Using Poly(Vinyl Alcohol) as a Template and
Their Porous Characteristics
- The Use of Smectite
Clays for Formation of a Ceramic Case Surrounding a Tetragonal Zirconium
Dioxide Core
- The Effect of the
Polyacrylamide, Polyvinyl alcohol and Carboxymethylcellulose on the
Aggregation of the Soil and Growth of the Plants
- Novel Organic
Modification of Clay Particles for Nanocomposite Formation
- Preparation of
Delaminated Clay Having a Narrow Micropore Distribution in the Presence
of Hydroxyaluminum Cations and Polyvinyl Alcohol
Thermal and Physical
Properties
-
Anomalous
high activity of a subfraction of polyvinyl alcohol ice
blocker
- Thermal Decomposition
Chemistry of Poly (Vinyl Alcohol)
- Effects of the
Molecular Structure of Polyvinyl Alcohol on the Adhesion to Fibre
Substrates
- Synthesis and
Characterization of Poly (Vinyl Alcohol) Hydrogels and Hybrids for
rMPB70 Protein Adsorption
- Physical Properties
- Flow Injection Polymer
Analysis of Polyvinyl Alcohol
-
Adhesion
Interactions between Poly(vinyl alcohol) and Iron-Oxide Surfaces: The
Effect of Acetylation
-
Structure and
Properties of Poly(vinyl alcohol)/Na+ Montmorillonite
Nanocomposites
-
Poly(acrylic
acid)–Poly(vinyl alcohol) Copolymers with Superabsorbent
Properties
Company
Profiles
- Jai Aravali Industrial
Products
- Kurary
- PVA Unlimited
- Shanghai Lite Chemical
Technology Co., Ltd.
- Wacker Chemie AG
- Celanese
Consultants
- Bridgette M.
Budhall
- The CECON Group,
Inc
- Craig S. Miller D.M.D.,
M.S
- Intota
- Isabelle
M.Germano
- Pardos Marketing
- Richard K.
Shoemaker
- SRI Consulting
- The Innovation
Group
Material Safety Data
Sheet
- Safety data for
poly(vinyl alcohol)
- CELVOL E 30/92
Polyvinyl Alcohol
- Polyvinyl Alcohol (PVA)
Release Agent
- Beryllium Oxide Green
Tape
- Polyvinyl Alcohol Mole
Hydrolyzed
- Polyvinyl
Alcohol
- Polyvinol
- Vamulsion
Patent
- Method of making blends
of poly(vinyl alcohol) and poly(ethylene oxide)
- Polyvinyl alcohol
polymer production method and polyvinyl alcohol polymer
- Blends of poly (vinyl
alcohol) and poly (ethylene oxide) and articles made therewith
- Compositions containing
fragrances and powdered water-soluble polymers and toilet blocks
produced therefrom
- Foamable plant fiber
composition and the foamed material and article thereof
- Oxyalkylene
group-containing polyvinyl alcohol resin composition and process for the
production of shaped articles from said composition
- Polyvinyl alcohol
compositions prepared by crosslinking in a freezing step
- Process for the
preparation of polyvinyl alcohol
- Medical material of
polyvinyl alcohol and process of making
- Thermoplastic polyvinyl
alcohol fibers and method for producing them
Products
- Polyvinyl Alcohol
Sterile Ophthalmic Solution
- Elvanol® 70-03
- Facial Cleaning
Products
- Polyvinyl Alcohol
Products List
- Partall Coverall
Film
Aspects of Polyvinyl
Alcohol
- Allergies in the
Workplace
- Current Environmental
Issues and Aspects of Textile Wet Processing
- Environmental
Assessment For FCN
- Environmental
assessment of bio-based polymers and natural fibres
-
Nano-Manufacturing: Technical Advances, Researh Challenges
and Future Directions
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Technology
-
Using Celvol
Polyvinyl Alcohol in the Production of High-Bulk Tissue and Towel
Stock
-
Compatibility
of polyvinyl alcohol and poly(methyl vinyl ether-co-maleic acid) blends
estimated by molecular dynamics
-
Enhancement
of Pyrroloquinoline Quinone Production and PolyvinylAlcohol
Degradation
-
Focal
Adhesions of Osteoblasts on Poly(d,l-lactide)/ Poly(vinyl alcohol)
Blends by Confocal Fluorescence Microscopy
-
Modification
of Poly(vinyl alcohol) for use as an Electrolyte Membrane in Direct
Methanol Fuel Cell
- Some Methods for Doping
Poly (Vinyl Alcohol) Hydrogels
- Prefabricated modular
structures using ECC technology
- Mechanistic analysis of
protein delivery from porous poly(vinyl alcohol) systems
-
Tip–sample
interactions in dynamic force microscopy of polyvinyl alcohol
films
-
Photocrosslinking using linear polyols in xanthene
dye-doped polyvinyl alcohol plates
-
Separation of
Carbon Dioxide from Nitrogen Using Poly(vinyl alcohol)-Amine Blend
Membranes
Applications
-
The Optical
Brightener Carrier of Choice in Paper/Paperboard Coatings
-
Microbial
Degradation Of Polyvinyl Alcohol (PVA) In Wastewater Treatment
Plants
-
Enhanced
Degradation of Polyvinl Alcohol by Pycnoporus cinnabarinus after
Pretreatment with Fenton’s Reagent
- A Photo-Crosslinked
Poly(vinyl Alcohol) Hydrogel Growth Factor Release Vehicle for Wound
Healing Applications
- Simplified Method of
Transcatheter Embolization with Polyvinyl Alcohol Foam
-
Custom-made
Polyvinyl Alcohol Grades for Inkjet Applications
- Uses of Polymers
-
Embolization
of Hepatic Arteriovenous Malformations Using Radiolabeled and
Nonradiolabeled Polyvinyl Alcohol Sponge in a Patient with Hereditary
Hemorrhagic Telangiectasia
-
Polyvinyl
Alcohol as a Carrier for Optical Brighteners at the Size
Press
-
Semicrystalline poly(vinyl alcohol) films and their blends
with poly(acrylic acid) and poly(ethylene glycol) for drug delivery
applications
- Artificial Tears
-
Repair of
Bony and Dentinal Defects Following Implantation of Polyvinyl Alcohol
Sponge
Market
- Production, Import, Use
and Disposal
- Chemical Business
Focus
- PVA Recovery Can Prove
Cost Effective
-
Airborne
Polyvinyl Alcohol (PVA) and Cellulose Fibre Levels in Fibre-Cement
Factories in Seven European Countries
- BASF extends Kollicoat
IR range
- Biodegradable Plastics
- Developments and Environmental Impacts
- US Biodegradable
Polymer Market
- EFSA Approves Food
Supplement Coating Agent
- Emerged PVA Geogrid
Market
- Polyvinyl Alcohol
Market Outlook
Report
- Polyvinyl alcohols
Feasibility Study
- Polyvinyl Alcohol From
Taiwan
- Polyvinyl Alcohol From
China, Germany, Japan, Korea and Singapore
- International
Degradable Plastics Symposium
- Producer's
Questionnarie
- WHO Food Additives
Report
-
Emission
Anisotropy of p-Cyano-N, N-Dialkylanilines in Poly(vinyl alcohol)
Film
- Copolymers based on
poly(vinyl alcohol) and acrylamide
-
Compatibility
of Polyvinyl Alcohol with the 241-F/H Tank Farm Liquid
Waste
- Complete Chemical
Protection Report
-
Studies of
Polyvinyl Alcohol under Temperature and Humidity Control
- The Petrochemical
Industry in Singapore
Project and
Plant
- Beijing Organic
Chemical Plant
- PVA emulsion
plant
- Expansion Project of
Guangxi Vinylon Plant
- Polyvinyl Alcohol
Project Report
- Functional Fabric with
Embedded Nanotube Actuators/Sensors
- Polymer Project
Suppliers
- Polyvinyl Alcohol
Manufacturers & Exporters
- Suppliers of Polyvinyl
Alcohol
- Polyvinyl Alcohol
Selling Leads
- Premium suppliers
of Polyvinyl Alcohol
- Polyvinyl Alcohol
Suppliers
- Polyvinyl Alcohol
Manufacturers
- Rajiv Traders
- China Supplier
Equipments
Suppliers
- Beaker Suppliers
- Polyvinyl alcohol
production machines Suppliers
- Magnetic Stirrer
Suppliers
- Indian
Exporters & Manufacturers of Magnetic Stirrer
- Microwaveable Plastic
Wrap Suppliers
Buyers
- Polyvinyl Alcohol
Buyers List
- Indian
Importers & Buyers
- Polyvinyl Alcohol
Buying Leads
Guides
-
Polyvinyl
Alcohol Bulk Handling Guidlines
- Playing with
Polymers
- Polyvinyl
Alcohol-Povidone Opht
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