Any one please give me how N- methylol acrylamide is a used for textile processing, is the presence of free acrylamide monomer will not harmful when we use in textile. Please clarify, if any one know about this topic
Dear Omprakash Pammi Munuswamy;
Here in some information about production and usage of N-methylol acrylamide
N-Methylolacrylamide is a bi-functional monomer with reactive vinyl and hydroxyethyl groups. Thermoplastic polymers can be formed by copolymerization of N-methylol-acrylamide with a variety of vinyl monomers by emulsion, solution and suspension techniques. The resulting products, which have pendant hydroxyethyl groups, can undergo cross-linking under moderate conditions, permitting conversion of thermoplastic backbone polymers to thermoset materials at the point of use in the absence of an external cross-linking agent. Conversely, the hydroxyethyl group can be reacted with a substrate like cellulose and subsequently cross-linked by free-radical polymerization
The uses of N-methylolacrylamide range from adhesives and binders in papermaking and textiles to a variety of surface coatings and resins for varnishes, films and sizing agents. It can be used in wet-strength and dry-strength agents for paper, in textile finishing agents for crease resistance, in antistatic agents, in dispersing agents, in cross-linking agents and in emulsion polymers.
For more information, you can also see the uploaded file bellow or refer to these references:
Dear Sanaz Hassanzadeh,
Thanks for your detailed answer and most valid information for me.
Dear Sanaz Hassanzadeh
Please send the attachment copy I am unable toread the down loaded copy from this link .
Dear Pramod Raichurkar ;
please give me your Email address to send the attached file directly.
I will send you the copy of file you need, as soon as I receive an answer from you
How is N-methylol acrylamide useful in textile processing co-polymers, which are used for a variety of purposes. The only ... polyacrylamides are in surface coatings and adhesives, textile dyeing, leather processing, paper and cardboard manufacture and in cosmetics. Residual ..... some countries from the use of acrylamide and N-methylolacrylamide (NMA) grouting agents.FIND THE DETAILeD nocNAS pdf
http://www.nicnas.gov.au/__data/assets/pdf_file/0019/4384/PEC_23_Acrylamide_Full_Report_PDF.pdf
N-methylolacrylamide bears the danger of releasing formaldehyde. Therefore actual studies in Europe are concentrated on replacing this compound for textile applications, etc.
Dear Sanaz Hassanzadeh
Please send the attachment copy I am also unable to down loaded copy from this link .My email address: [email protected]
Regards
Shahla Ataei
Dear Sami,
N-methylol acrylamide) either individually or in combination is chemically modified jute is found to improve or alter the important textile related properties like moisture regain, tensile properties, fabric stiffness, crease recovery angle, shrinkage parameters, and thermal behavior. This leads to reduction in warp-way tenacity.
The polymerization and condensation reaction of N-methylolacrylamide within cotton fabrics in which K2S2O8, (NH4) 2S 2O8, or H2O2 can be used as initiator and NH4 Cl or (NH4 )2HPO4 used as the acid condensation catalyst. Crease recovery and abrasion resistance (flat) of the treated fabric increased with higher value of resin content; tear strength. The effect of the addition of acid catalysts such as NH4Cl on the extent of the crease resistance is considerable, although some marked improvement was obtained in neutral catalysts such as K2S2O8 alone.
Treatment usefulness
The addition of co-monomers such as acrylamide and hexamethylene diamine HCl-salt as well as softeners to the treating bath may be effective in improving the strength losses induced by this treatment. Aftertreatment of the N-methylolacrylamide-treated fabric with hexamethylenediamine or thereafter with formalin may be also effective, since somewhat continuous distribution of the different kinds of network-structures within the fiber could be obtained by this procedure.
Hope it work out.
Ashish
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