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Introduction of MAAM Technology Molecular Assembling Anti Microbial

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Anti-microbal material: obtained by adding one or several antimicrobal agent(s) ... MAAM technology is the prelude to the revolution of antimicrobial material. ... – PowerPoint PPT presentation

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Title: Introduction of MAAM Technology Molecular Assembling Anti Microbial


1
Introduction of MAAM Technology
Molecular Assembling Anti Microbial

2
Desirability of Antimicrobial Material
  • Anti-microbal material obtained by adding one or
    several antimicrobal agent(s) to inhibit or
    sterilize the material.
  • Microbes Virus, bacteria and fungi can cause
    harm in every aspect of life.
  • Increasingly, people will demand protection
    against microbial infection.

3
Application of Antimicrobial Material
  • 1960s antibiotic fibre
  • 1980s antimicrobial plastic
  • 1990s great development of antimicrobial
    material in various industries chemical
    engineering, fibre, food, electrical appliance,
    and cement, covering almost all major kinds of
    fibre and plastic products Dacron, polypropylene
    fibers, acrylon, PP?ABS?ABS?PE?PVC.

4
Classification of Antimicrobial Materials
  • According to the chemical composition of
    antimicrobial agents divided into
  • Natural antimicrobial agents
  • Impossible to be industrialized due to,
  • Limitations of sources and processing
    conditions
  • Organic antimicrobial agents (first generation)
  • High efficiency and broad spectrum of
    antimicrobial ability
  • Poor thermal stability, toxicity, seepage and
    dissolution
  • Short life time and poor wash resistance,
  • Inorganic antimicrobial agents (second
    generation)
  • Silver-series agents other inorganic agents

5
Inorganic Antimicrobial Agents
  • Silver-series agents
  • Advantages safety, thermal stability, and
    durability,
  • widely used in fibre, plastics and building
    materials.
  • Disadvantages higher price and slow
    effectiveness.
  • poor effect on fungi and mould.
  • oxidation of silver result in
    brown color and
  • deterioration of
    the antimicrobial ability.
  • Other inorganic antimicrobial agents
  • Poor compatibility of the powder with
    macromolecular materials causes agglo-meration in
    matrix resin, resulting in difficulties in
    spinning and drawing.
  • Agents releasing heavy metallic ions, can not be
    used in materials for food pack-aging, kitchen
    wares and drinking water pipes, etc.

6
Invention of MAAM Technology
  • Polymerization and processing of polymers
  • Preparation of a multifunctional antimicrobial
    oligomer containing the reactive double bond,
    amino group, and guanidyl group
  • Functional master batch formed by the bonding
    reaction of the oligomer with polyolefin.
  • Mixing the functional master batch with
    polyolefin to a certain ratio, thus preparing
    various fibres and plastic products for the
    broad-spectrum antimicrobial ability, improvement
    of the antistatic ability, dye-ability, and
    paint-ability.

7
Third Generation of Antimicrobial Agent
  • MAAM technology is the prelude to the revolution
    of antimicrobial material.
  • The essence of the invention A functional
    polyolefin master batch as a new antimicrobial
    agent

R is a polyamine and guanidine salt oligomer
bonded onto polyolefin molecular chain by
covalence bond, while S is one selected from
hydrogen, chlorine, methyl, or the phenyl group.
8
Importance of Guanidine Salts
  • GB 2,182,245 discloses polyhexamethylene
    biguanide being used as an antimicrobial agent,
  • JP 05,209,195 JP 05,209,196 JP 05,209,197
    disclose polyhexamethylene biguanide as
    decontaminant in water treatment, characterizing
    good water solubility and high safety for
    environmental protection
  • U.S. Pat. No. 4,891,423 discloses polyoxyethylene
    diamine biguanide being used as water-soluble
    antimicrobial liquor for contact lenses which
    proves that the antimicrobial agent has a
    superior safety for humans.
  • RU 2,052,453 and SU 1,750,979 disclose
    polyethylene diamine biguanide being used as an
    antimicrobial agent in water treatment and stuff
    added into pigment for oil painting protection.
  • Guanidine salt and its derivatives are raw
    materials for producing sulfadiazine and
    sulfadimidine, these medicines have
    broad-spectrum antimicrobial function, and
    excellent thermal stability.

9
Modification of Guanidine Salts
  • Polymer material containing guanidyl groups are
    effective antimicrobial agents, and are used as
    water purification agents because of their good
    water-soluble properties.
  • The water-soluble property contrarily becomes an
    obstacle for its application as an antimicro-bial
    modifier in the areas of plastics, fibres,
    rub-ber, and coating materials.
  • Further modifications of the polymer containing
    guanidyl groups are needed in order to have more
    industrial value and wider applications.

10
Advantages of MAAM Technology
  • Compared to antimicrobial products produced by
    conventional blending techniques, MAAM technique
    overcomes the poor safety for human beings,
    inferior washable durability and etc.
  • MAAM products with antimicrobial functional
    groups are firmly linked with matrix resin
    molecules via chemical bonds, so that they can
    endure wash with detergents and without toxicity.
  • Functional master batch has excellent
    compatibility with resin matrix, particularly
    suitable for more complicated processes, such as
    producing fine filament and biaxial stretching
    film.
  • The safety of the materials ensure the
    applications in food packaging materials and
    pressure water pipe materials.
  • Ordinary antimicrobial materials containing
    organic and inorganic anti-microbial agents can
    not compete.

11
Principle of MAAM Technology
  • Guanidine salts and their derivatives are used as
    antistatic agents for synthetic fibers since they
    have strong polar and moisture adsorbability.
  • Compared to matrix resins, antimicrobial
    functional groups have much stronger polar
    effect, and are easily enriched on the surface.
    Therefore, the electric resistivity is reduced,
    and the antistatic ability of the material is
    improved.
  • The polar groups can combine with dye or paint
    molecules, and the problems in dyeing and
    painting of polyolefins can be solved/reduced to
    a certain extent.
  • Due to the difference in polarity, the
    antimicrobial groups can act as nucleating
    agents, increase the rate of crystallization and
    reduce the grain size. Thus improving the
    mechanical performance of materials to a certain
    extent.

12
Principle of MAAM Technology
  • Both the cell and the cell wall of microbes
    con-tain protein with negative charge. The
    antimi-crobial functional groups, grafted by MA
    tech- nology, has positive electric polarity.
  • Antimicrobial functional groups can attract the
    microbes with Coulomb force, and block the
    respiration and metabolism of microbial cells.
  • Finally it causes the rupture of the cellmembrane
    and plasmolysis, and thus achieves the
    capabili-ty of anti-bacterial, anti-viral, and
    anti-fungi (mildew-proof) function.

13
Test Results of Master Batch
  • Efficiencies of Anti-microbesantimicrobial rate
    gt 99.99
  • antiviral rate gt 98.79
  • mildew-proof zero grade (top grade)
  • Rapid killing effect on anti-bacteria99 of
    bacteria were killed lt 10 minutes with a
    concentrationof 105 CFU/ml.
  • Broad-spectrum of anti-microbes effectThe
    germicidal effects were tested with Colibacillus,
    S.aureus, P.aeruginose, Hag bacillus,
    Preuinocaccus, Saccharomy sake, Aspergillus
    flavus, Candida albicans, Influenza virus and so
    on. (supplements)

14
Test Results of Applications
  • Permanence of anti-microbes effectAntimicrobial
    functional groups are firmly linked via chemical
    bond with resin, and the functional ingredients
    can not be seeping and dissolving even washing
    with detergent for more 50 times.
  • Acute (oral LD50) Toxicity Test non- toxicity
    substance
  • Skin-irritation Experiment Negative
  • Micronucleus Test of Bone Marrow Cells Negative
  • The test of BOPP Film Sample complies with the
    specification and requirment stated by the US
    FDA.
  • (see attachments)

15
Applications of MAAM Technology
  • Antimicrobial non-woven materials and a variety
    of other products are extensively used in
    hospitals, public places and households. They
    include different kinds of antimicrobial and
    medically protective articles (such as protective
    gauze mask, surgery gauze masks, protective
    clothing, operating coat/cap, doctor cap,
    bandages, pled gets, operating drapes, medical
    articles used during the bearing of a baby,
    operative cavity cloth, sheets, pillowslips,
    diapers, sanitary towels, insoles etc.
  • Antimicrobial film and its derivates such as, PP
    film, PE film, PA film, PVC film, PET film etc.
    are extensively used in medi-cine, food packaging
    and the like.

16
Applications of MAAM Technology
  • Antimicrobial (mildew-proof) fiber and its
    products, such as propylene lasting fiber, short
    fiber, nylon, terrylene, garments, under-wear,
    socks, carpets, furniture textiles, cloth
    materials polymers used in toys etc.
  • Antimicrobial (mildew-proof) building materials,
    such as PP-r water pipe, PP-b water pipe, PVC
    water pipe, PE pipe etc.
  • Antimicrobial (mildew-proof) family appliances,
    such as refri-gerators, washing machine,
    air-conditioner, waterdispensers, telephones,
    computers and mice.
  • Antimicrobial (mildew-proof) articles used in
    households and public places, such as plastic
    desks, plastic chairs, plastic dishware, etc.

17
Master Batch
18
Using Method of MAAM Technology
  • Choose right master batch of the same or similar
    proper- ty as the main material.
  • Dry processing This is a vacuum-packed product.
    It should be used once you open the bag. If
    there is any non-vacuum situation, we suggest you
    dry this product 1 to 2 hours at the temperature
    of 100 ºC to 105 ºC.
  • Added proportion 4 to 5
  • Mix the master batch with main ingredient evenly
    (temperature 180-185 ºC).

The melting point of master batch is ca. 360 ºC
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