Grafting of Polyester Fibers

Somanathan, N.; Balasubramaniam, Bhuvaneshwari; Subramaniam, V.

doi:10.1080/10601329508009345

Cited by 18 publications

(12 citation statements)

References 16 publications

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“…Probably this is because at higher temperatures, higher combination rates of monomer are obtained increasing homopolymerization reactions, which results in a decreased grafting yield. Similar observations for grafting methacrylic acid onto PET using benzoyl peroxide (BPO) as initiator have been reported [14]. …”

Section: Effect Of Reaction Temperaturesupporting

confidence: 54%

Characterization and modification of commercial acrylic fibers grafted with acrylic acid

Bagheri

Abdouss²,

Shoushtari

2009

Materialwissenschaft Werkst

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The graft copolymerization of acrylic acid (AA) onto commercial acrylic fibers (PAN) has been studied using Azobis(isobutyro)nitrile (AIBN) as an initiator. AA grafting initiated by radicals formed from thermal decomposition of AIBN. In this study, the effects of monomer and initiator concentration, time and temperature reaction on the grafting yield have been investigated.The optimum conditions for this grafting reaction were obtained with an AA concentration of 1.67 M, an AIBN concentration of 0.0097 M, a reaction temperature of T=85 C and with reaction time of 60 minutes.The fiber structure has been investigated by different experimental techniques of characterization such as Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), water absorption and also in this study has been investigated the mechanical property. The thermal analysis data showed that increasing in grafting yield, decreases the thermal stability of fiber. Grafting also affected slightly the fiber morphology. The experimental data of mechanical properties show clearly that by increasing of grafting yield, max extension will decrease. Grafting of poly AA improved water absorption.

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Section: Effect Of Reaction Temperaturesupporting

confidence: 54%

Characterization and modification of commercial acrylic fibers grafted with acrylic acid

Bagheri

Abdouss²,

Shoushtari

2009

Materialwissenschaft Werkst

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“…The most effective process so far has been radical grafting polymerization since the polymer surfaces can be modified without compromising bulk properties. [8,13,14] However, there are two problems associated with the conventional radical grafting polymerization. First, the formation of homopolymer byproducts during grafting polymerization not only will cause difficulty in the further processing of the modified material, but also will lead to a huge waste of the functional monomers.…”

mentioning

confidence: 99%

Surface Interpenetrating Networks of Poly(ethylene terephthalate) and Polyamides for Effective Biocidal Properties

Liu

Zhao

Rudenja

2010

Macro Chemistry & Physics

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Poly(ethylene terephthalate) (PET) fabrics were modified by diffusing vinyl amide monomers, divinyl crosslinker N,N′‐methylenebisacrylamide (MBA) and photoinitiator benzophenone (BP) into the surface of the PET substrate, which was swollen in a mutual solvent. Subsequent in situ photo‐polymerization resulted in the stable entrapment of the polyamides within the surface of the PET. The PET/polyamide systems produced by this technique were physically inseparable except by melting or dissolving PET. It is referred to as a sequential interpenetrating polymer network (IPN): thermoplastic semi‐IPN. Analyses of these materials by infrared spectroscopy, X‐ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) confirmed the successful incorporation of polyamide and revealed that the polyamide is also uniformly distributed along the PET yarns. Modulated differential scanning calorimetry (MDSC) indicated a certain degree of phase‐mixed structure between PET and polyacrylamide, despite the thermodynamic incompatibility of two polymers, which could be induced to separate upon heating above the melting point of PET. These materials were stable upon Soxhlet extraction with distilled water for 72 h, and also with methanol for 24 more hours. After being converted to N‐halamine via chlorine bleaching, these materials can bring 100% reduction of the hospital acquired methicillin‐resistant Staphylococcus aureus within 10 min contact.magnified image

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“…The percentage grafting (%G) was calculated from the weight uptake, applying the following formula (Somanathan et al 1995;Hebeish et al 1981): (1) where W 0 and W are the weights of the nylon fibres before and after graft polymerization, respectively.…”

Section: Evidence Of Graftingmentioning

confidence: 99%

Use of the [Copper(II)/MAA-nylon] Complex for the Adsorption of Residual Acid Dyes

Makhlouf

Baouab

Roudesli

2008

Adsorption Science & Technology

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Nylon fibres were converted into a strong ion-exchange polymer by grafting with methacrylic acid (MAA). The modified nylon fibres were monitored for their ability to remove copper(II) ions and dyes from aqueous solutions. Evidence for the grafting of MAA onto nylon was provided by weight uptake experiments and atomic force microscopy (AFM). The exchange capacity of MAA-nylon was evaluated by potentiometric titration of the grafted acidic groups. Due to complexation, the acidic grafted groups immobilize Cu(II) ions from Clark-Lub's buffered solution at a pH value of 8. The formation of a 1:1 complex was demonstrated by the values of the adsorption limits.The binary [Cu(II)/MAA-nylon] system was then tested for the adsorption of two Acid dyes, i.e. Acid Blue 25 (AB 25) and Calmagite (Calma), as ligands in the metal-coordinating process. The adsorption of Cu(II) onto MAA-nylon and of the dyes onto Cu(II)/MAA-nylon was followed spectrometrically. ) for adsorption were also investigated. The adsorption process is exothermic, which leads to a reduction in the extent of dye adsorption with increasing temperature.

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Grafting of Polyester Fibers

Cited by 18 publications

References 16 publications

Characterization and modification of commercial acrylic fibers grafted with acrylic acid

Characterization and modification of commercial acrylic fibers grafted with acrylic acid

Surface Interpenetrating Networks of Poly(ethylene terephthalate) and Polyamides for Effective Biocidal Properties

Use of the [Copper(II)/MAA-nylon] Complex for the Adsorption of Residual Acid Dyes

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