Synthesis and properties of graft copolymers of vinyl fluoride on natural silk

Usmanov, Kh.U.; Yul'chibayev, A.A.; Valiev, A.; Saidaliev, T.; Muratov, A. A.

doi:10.1016/0032-3950(78)90347-7

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The spectrum of pure PVDF (a) contains three intensive absorption bands in the region 1000–1200 cm −1 , which are assigned to stretching vibrations of the CF groups. The absorption bands at around 1400 cm −1 are caused by deformational vibrations of the methylene groups in the PVDF molecule 35. Bands in the same regions can be noticed in the spectrum of the material produced in the grafting reaction (b), which suggests that functionalization of the CB was successful.…”

Section: Resultsmentioning

confidence: 66%

Functionalization of carbon black nanoparticles with poly(vinylidene fluoride)

Vukićević¹,

Hierzenberger²,

Hild³

et al. 2010

J. Polym. Sci. A Polym. Chem.

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The surface of carbon black (CB) nanoparticles was functionalized with poly(vinylidene fluoride) (PVDF) either by trapping of macroradicals or by cycloaddition. PVDF with two iodine end groups (I‐PVDF‐I) obtained from iodine transfer polymerization in supercritical CO2 was heated in the presence of CB and the CI bond was cleaved resulting in a reaction between the macroradical and the CB surface. To allow for cycloaddition of PVDF to the CB surface for a number of polymers, the iodine end groups were replaced by azide end groups. In addition, microwave irradiation was applied to the functionalization. The influence of temperature, time, polymer concentration, and polymer molar mass on the functionalization reaction was examined. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010

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Section: Resultsmentioning

confidence: 66%

Functionalization of carbon black nanoparticles with poly(vinylidene fluoride)

Vukićević¹,

Hierzenberger²,

Hild³

et al. 2010

J. Polym. Sci. A Polym. Chem.

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“…The modification of silk fiber properties through graft copolymerization has evoked considerable interest in recent years. Various authors1–10 have studied and reported the mechanical and moisture regain characteristics of grafted fibers. However, only limited information regarding those above studies by using grafted fibers prepared under different conditions (e.g., variations in time, monomer concentration, type of solvent, etc.)…”

Section: Introductionmentioning

confidence: 99%

Studies of mechanical and moisture regain properties of methyl methacrylate grafted silk fibers

Maji

Basu

Datta

et al. 2002

J of Applied Polymer Sci

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ABSTRACT:The mechanical properties such as the tenacity, breaking extension, initial modulus, elastic and work recovery, and stress relaxation behavior of methyl methacrylate (MMA) grafted silk fibers prepared under different conditions were measured and explained in terms of the relative dominance of the stress concentration, reduction in the interchain cohesion, and fiber matrix stiffening at different grafting percentages. The moisture regain characteristics of fibers grafted in the presence of different solvents were also studied and compared. The grafting of MMA on silk was found to improve the recovery properties significantly without affecting the stress relaxation behavior. The moisture regain studies indicate that moisture regain is reduced with increasing length of the grafted poly(MMA) chains.

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Synthesis and properties of graft copolymers of vinyl fluoride on natural silk

Cited by 2 publications

References 2 publications

Functionalization of carbon black nanoparticles with poly(vinylidene fluoride)

Functionalization of carbon black nanoparticles with poly(vinylidene fluoride)

Studies of mechanical and moisture regain properties of methyl methacrylate grafted silk fibers

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