Thermal induced graft polymerization using peroxide onto polypropylene fiber

Duann, Yeh-Fang; Chen, Yan-Cheng; Shen, Jiun-Ting; Lin, Yen-Hsi

doi:10.1016/j.polymer.2004.08.008

Cited by 28 publications

(13 citation statements)

References 27 publications

(22 reference statements)

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“…Various surface treatments as well as bulk modifications [2,3] have been applied to modify the hydrophobic PP such as flame, plasma, corona, and grafting [4]. Graft polymerization can modify the PP surface and introduce many desirable properties to the PP polymers using thermal treatment [5,6] and gamma radiation [7,8]. It is well known that UV-induced graft polymerization is a promising method for the surface modification of polymers because photografting is relatively simple, energy-efficient, and cost-effective process [4].…”

Section: Introductionmentioning

confidence: 99%

Continuous photografting of HEMA onto polypropylene fabrics with benzophenone Photoinitiator

Jang

2008

Fibers Polym

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Continuous photografting onto polypropylene fabrics in the absence of inert gases was carried out to improve hydrophilic property of PP fabrics, which was padded with a formulated solution of 2-hydroxyethyl methacrylate(HEMA) and benzophenone as a monomer and a photoinitiator, respectively. The grafting yield increased with increases in benzophenone concentration up to 30 % on the weight of the monomer and UV energy up to of 38 J/cm 2 , while 30 % HEMA concentration was optimal for the grafting efficiency. The physicochemical properties of the grafted PP fabrics were monitored by FT-IR, SEM, zeta potential, and dyeability to a cationic dye. The grafting increased O 1s /C 1s content and remarkably produced more negative zeta potentials compared with the pristine PP fabric. Also the grafted PP showed the increased dyeability to cationic dyes with increasing graft yield resulting from the enhanced electrostatic interaction between the dyes and negatively charged surface of the grafted PP fiber. In addition, improved hydrophilic property of grafted PP fabrics was ascertained by more rapid water wetting time and higher water absorbency.

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Section: Introductionmentioning

confidence: 99%

Continuous photografting of HEMA onto polypropylene fabrics with benzophenone Photoinitiator

Jang

2008

Fibers Polym

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“…Therefore, chemical modification technologies have been used to modify or improve the surface properties of PP fiber. Among them, surface graft modification through free radical polymerization technique is one of the most commonly used methods,3–7 and methacrylic acid (MAA), methacrylamide (MAAm), acrylamide (AAm), and 2‐hydroxyethyl methacrylate (HEMA) are taken as grafting monomer for modification of PP 8–25. However, one major limitation for this method is that the grafting degree is rather low because a large quantity of homopolymers come into being as side products in the reaction.…”

Section: Introductionmentioning

confidence: 99%

Study on the Graft Reaction of Poly(propylene) Fiber with Acrylic Acid

Wang

Chen

et al. 2006

Macro Materials & Eng

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Summary: In this paper, the graft of poly(propylene) fiber with acrylic acid is investigated. The effects of grafting temperature, monomer concentration, and grafting time on the grafting degree of acrylic acid onto poly(propylene) fiber are discussed. In contrast to the conventional method of determining the grafting degree gravimetrically, the acid‐base titration method used in this paper was more efficient, even at low grafting degree. High‐performance liquid chromatography (HPLC) was used to estimate the averaged length of the grafted poly(acrylic acid) chains on each grafted site of poly(propylene) backbone. And also a mechanism for the grafting polymerization is proposed.Possible microstructures of two PP‐g‐AA samples at the same grafting degree.imagePossible microstructures of two PP‐g‐AA samples at the same grafting degree.

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“…There are several methods to graft PP fibres by polar groups including free radical methods (Buchenska, 2002;Duann et al, 2004;Machado et al, 2001), plasma treatments (Liang et al, 2000;Wei, 2004;Yamaguchi et al, 2001), radiation methods (Balart et al, 2010;Guan, 2000;Kim and Saito, 2000;Mukherjee and Sharma, 1985) and ultra violet (UV) initiation methods (Ma et al, 2000(Ma et al, , 2001. Horbanová et al (2010) reported modification of PP fibres by inorganic additives.…”

Section: Introductionmentioning

confidence: 99%

Grafting of continuous polypropylene fibres by methacrylic acid monomers to improve their bonding to concrete matrix

Mazhar¹,

Abdouss²,

Shariatinia‬³

et al. 2013

Magazine of Concrete Research

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In this paper, methacrylic acid monomers grafted to continuous polypropylene fibres to make them hydrophile, while grafting experiments are designed based on Taguchi method in which temperature, monomer concentration, crosslinker concentration and time of reaction are selected as variable factors at four levels and several polypropylene fibres with various grafting degrees are obtained. Next, pull-out behaviour of modified fibres embedded to concrete is investigated and compared to raw fibres. In addition, influence of grafting on pull-out behaviour of fibres is addressed. Pull-out tests and scanning electron microscopy images verified the bonding improvement of the proposed fibres to concrete appropriately. Finally, optimum grafting degree to achieve the best bonding between the fibres and concrete with highest tolerated tensile load is determined.

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Thermal induced graft polymerization using peroxide onto polypropylene fiber

Cited by 28 publications

References 27 publications

Continuous photografting of HEMA onto polypropylene fabrics with benzophenone Photoinitiator

Continuous photografting of HEMA onto polypropylene fabrics with benzophenone Photoinitiator

Study on the Graft Reaction of Poly(propylene) Fiber with Acrylic Acid

Grafting of continuous polypropylene fibres by methacrylic acid monomers to improve their bonding to concrete matrix

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